Altimeter Patents (Class 342/120)
  • Patent number: 10760912
    Abstract: There is provided an information acquisition method of a wireless communication device including a receiver configured to perform wireless communication with another wireless communication device to acquire information. The information acquisition method includes acquiring operation time information indicative of time at which the other wireless communication device receives an information acquisition instruction by an operation, acquiring position information indicative of a user position at time based on the acquired operation time information, and acquiring map information for indicating, on a map, the acquired position information.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 1, 2020
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Takeshi Hanada, Tadashi Kojima, Oh Takahashi, Toyokazu Nishio
  • Patent number: 10746860
    Abstract: An iterative method for detecting is provided, with at least one receiver satellite in orbit, a target possessing reflective properties that are different from those of the area in which the target is found, by GNSS reflectometry, wherein the reflected GNSS signals are received by an active antenna of the receiver satellite comprising a plurality of antenna elements, the method comprising a step of determining assumed positions of the target, for which positions it is desired to detect the target, and, forming beams and tracking GNSS signals in accordance with these assumptions.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 18, 2020
    Assignee: THALES
    Inventors: Thibaud Calmettes, Guillaume Carrie, Michel Monnerat
  • Patent number: 10725170
    Abstract: In one embodiment, a radio altimeter tracking filter is provided. The filter comprises: a wireless radio interface; a processor coupled to the wireless radio interface; a memory coupled to the wireless radio interface; wherein the wireless radio interface is configured to wirelessly receive a radio altimeter signal and convert the radio altimeter signal to a baseband frequency signal, wherein the a radio altimeter signal sweeps across a first frequency spectrum between a first frequency and a second frequency; wherein the processor is configured to pass the baseband frequency signal through a filter executed by the processor, the filter comprising a passband having a first bandwidth, and wherein the filter outputs a plurality of spectral chirps in response to the baseband frequency signal passing through the first bandwidth; wherein the processor is configured to process the plurality of spectral chirps to output characteristic parameters that characterize the radio altimeter signal.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: July 28, 2020
    Assignee: Honeywell International Inc.
    Inventors: Michael R. Franceschini, Kelly P. Muldoon, Steven L. Timm
  • Patent number: 10690772
    Abstract: A system for creating a three dimensional model of an environment includes a LIDAR scanning system to scan an environment to provide an image of a scene of the scanned environment, a geo-locator to tag a plurality of points within the image with geo-reference points and a labeler to label features of interest within the image of the scene and to identify possible access paths within the three dimensional model of the environment from the features of interest potentially providing an access path for a target drone.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: June 23, 2020
    Assignee: Raytheon BBN Technologies Corp.
    Inventor: Brian R. Van Voorst
  • Patent number: 10585183
    Abstract: Radar equipped with a transmission antenna array and with a reception antenna array is provided, the measurement of the height h2 is obtained by estimating the frequency of at least one time-dependent amplitude modulation produced on the reception antenna array, the modulation generated by the interference of the signals received directly from the target and the signals received after reflection on the ground, on the basis of the signals transmitted by the transmission antenna array.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: March 10, 2020
    Assignee: THALES
    Inventors: Pascal Cornic, Yves Audic, Stéphane Kemkemian
  • Patent number: 10444327
    Abstract: A method for determining parameters of a finite impulse response pulse compression filter, implemented by a multi-channel radar comprises: a step Etp10 of transmitting a calibration signal and of acquiring this calibration signal after propagation through the transmission channel, a step Etp20 of injecting the signal acquired, at the input of each of the reception channels, a step Etp30 of measuring the signal at the output of each reception channel, a step Etp40 of calculating the transfer function of the matched filters on the basis of the signals at the output of the reception channels, a step Etp50 of measuring the value of the average power at the output of the various reception channels and of calculating the relative gains between each of the reception channels and a predetermined reception channel on the basis of the measured values of average powers.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: October 15, 2019
    Assignee: THALES
    Inventors: Rodolphe Cottron, Jean-Michel Hode
  • Patent number: 10371812
    Abstract: A system can include an unmanned aerial vehicle and an altimeter disposed on the unmanned aerial vehicle. The altimeter can include an ultra-wideband radar antenna disposed orthogonally to a plane of straight and level flight of the unmanned aerial vehicle and having an omnidirectional azimuthal beam pattern orthogonal to the plane of straight and level flight of the unmanned aerial vehicle. The altimeter can be configured to determine an altitude of the unmanned aerial vehicle above a target surface based on time of flight of radar pulses between the ultra-wideband radar antenna and the target surface.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: August 6, 2019
    Assignee: Rosemount Aerospace Inc.
    Inventors: Joseph T. Pesik, Todd Anthony Ell
  • Patent number: 10334555
    Abstract: A method for providing information about a height of a user equipment is disclosed. In an embodiment the method includes receiving, by user equipment, a first height requirement message sent by a network side device, wherein the first height requirement message is used to obtain a height information of a position in which the user equipment is located, listening, by the user equipment, to a broadcast message of an access node, wherein the broadcast message includes a node identifier of the access node and a receive power information of the access node received by the user equipment, and sending, by the user equipment, a response message to the network side device, wherein the response message includes the node identifier of the access node of the user equipment and the receive power information of the user equipment.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: June 25, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yingzhe Li, Tianle Deng, Hongzhuo Zhang
  • Patent number: 10216197
    Abstract: Systems, methods, and devices are provided for providing flight response to flight-restricted altitudes. The altitude of an unmanned aerial vehicle (UAV) may be compared with an altitude restriction. If needed a flight-response measure may be taken by the UAV to prevent the UAV from flying in a restricted altitude. The altitude measurement of the UAV and/or altitude restriction of the UAV may be modified for improved performance. Different flight-response measures may be taken depending on preference and the rules of a jurisdiction within which the UAV falls.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: February 26, 2019
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Xingyu Zhang, Ketan Tang, Cong Zhao
  • Patent number: 10212687
    Abstract: A system and method to opportunistically capture and use measurements of barometric readings from a plurality of mobile agents to determine the elevational position of one of the mobile agents.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: February 19, 2019
    Assignee: Echo Ridge LLC
    Inventors: Joseph P. Kennedy, John P. Carlson
  • Patent number: 10120064
    Abstract: The embodiments described herein provide a radar device and method that can provide improved sensitivity. In general, the embodiments described herein provide a saturation detector and reset mechanism coupled to a radar receiver. The saturation detector is configured to detect saturation events in the radar receiver, and the reset mechanism is configured to reset at least one filter unit in the radar receiver in response to detected saturation events. As such, the embodiments can facilitate improved radar sensitivity by reducing the effects of saturation events in the radar receiver.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: November 6, 2018
    Assignee: NXP USA, Inc.
    Inventors: Cristian Pavao-Moriera, Dominique Delbecq, Birama Goumballa
  • Patent number: 10033098
    Abstract: A modulation concept for a radar having switched antennas, in which individual switching states of the antenna array having the switched antennas are closely dovetailed with the modulation of the radar signals. In this way it is possible to use switched antennas in the time division multiplex method and thus to allow for short time periods between the switching states. This also allows for a phase evaluation across the switching states.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: July 24, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventor: Michael Schoor
  • Patent number: 9952313
    Abstract: A Radar Calibration Processor (“RCP”) for calibrating the phase of a stepped-chirp signal utilized by a synthetic aperture radar (“SAR”) is disclosed. The RCP includes a periodic phase error (“PPE”) calibrator, first non-periodic phase error (“NPPE”) calibrator in signal communication with the PPE calibrator, and a second NPPE calibrator in signal communication with the first NPPE calibrator.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: April 24, 2018
    Assignee: The Boeing Company
    Inventor: Kwang M. Cho
  • Patent number: 9939524
    Abstract: Systems and methods for measuring velocity with a radar altimeter are provided. In at least one embodiment a method for measuring velocity magnitude of a platform in relation to a surface comprises transmitting a radar beam, wherein the radar beam is aimed toward a surface; receiving a plurality of reflected signals, wherein the plurality of reflected signals correspond to portions of the transmitted radar beam that are reflected by a plurality of portions of the surface; and applying Doppler filtering to the plurality of signals to form at least one Doppler beam. The method also comprises identifying range measurements within each Doppler beam in the at least one Doppler beam; and calculating the velocity magnitude based on the range measurements of the at least one Doppler beam.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: April 10, 2018
    Assignee: Honeywell International Inc.
    Inventor: Benjamin J. Winstead
  • Patent number: 9869754
    Abstract: In one embodiment, a system includes a first lidar sensor, which includes a first scanner configured to scan first pulses of light along a first scan pattern and a first receiver configured to detect scattered light from the first pulses of light. The system also includes a second lidar sensor, which includes a second scanner configured to scan second pulses of light along a second scan pattern and a second receiver configured to detect scattered light from the second pulses of light. The first scan pattern and the second scan pattern are at least partially overlapped. The system further includes an enclosure, where the first lidar sensor and the second lidar sensor are contained within the enclosure. The enclosure includes a window configured to transmit the first pulses of light and the second pulses of light.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: January 16, 2018
    Assignee: Luminar Technologies, Inc.
    Inventors: Scott R. Campbell, Rodger W. Cleye, Jason M. Eichenholz, Lane A. Martin, Matthew D. Weed
  • Patent number: 9730013
    Abstract: A method, a recording medium and an electronic device of 3D geolocation are provided. The method includes the following steps: distributing a plurality of samples that are already 2D-geolocated into a plurality of geographic areas according to 2D locations of the samples, wherein each sample includes a measurement report provided by a user equipment attached to a mobile network; generating a relative sequence of altitudes of the samples in each geographic area according to altitude-related data obtained from the samples in the geographic area; and determining the altitudes of the samples in each geographic area according to the relative sequence of the geographic area.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: August 8, 2017
    Inventors: Hsiao-Tse Chang, Ta-Gang Chiou
  • Patent number: 9678197
    Abstract: One embodiment is directed to a method for operating a radar altimeter. The method includes transmitting a radar signal at a first frequency, ramping the frequency of the radar signal from the first frequency to a second frequency, and transmitting the radar signal at the second frequency. The reflections can be processed by determining an approximate distance to a target based reflections of the frequency ramp and the approximate distance can be refined based on a phase difference between a reflection of the radar signal transmitted at the first frequency and a reflection of the radar signal transmitted at the second frequency.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: June 13, 2017
    Assignee: Honeywell International Inc.
    Inventor: David C. Vacanti
  • Patent number: 9660605
    Abstract: Systems and methods for a variable delay line using variable capacitors in a time delay filter are provided. In at least one embodiment, a delay line is configured to apply an adjustable time delay to an electromagnetic signal travelling through the delay line. The delay line comprises a filter that includes a first variable capacitor. Further, a capacitance of the first variable capacitor is configured to adjust the delay applied to the electromagnetic signal travelling through the delay line when varied.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: May 23, 2017
    Assignee: Honeywell International Inc.
    Inventors: Robert Jason Tinsley, Marc Pos, Paul David Ferguson
  • Patent number: 9645228
    Abstract: The various technologies presented herein relate to generation of a desired waveform profile in the form of a spectrum of apparently random noise (e.g., white noise or colored noise), but with precise spectral characteristics. Hence, a waveform profile that could be readily determined (e.g., by a spoofing system) is effectively obscured. Obscuration is achieved by dividing the waveform into a series of chips, each with an assigned frequency, wherein the sequence of chips are subsequently randomized. Randomization can be a function of the application of a key to the chip sequence. During processing of the echo pulse, a copy of the randomized transmitted pulse is recovered or regenerated against which the received echo is correlated. Hence, with the echo energy range-compressed in this manner, it is possible to generate a radar image with precise impulse response.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: May 9, 2017
    Assignee: Sandia Corporation
    Inventors: Armin W. Doerry, Brandeis Marquette
  • Patent number: 9629005
    Abstract: Systems and methods which provide local sensor and/or external information derived proactive aiming assistance with respect to wireless nodes for facilitating desired wireless links are shown. Embodiments provide an aiming assistance user interface providing guidance with respect to properly altering the orientation of a wireless node to provide a desired wireless link. To facilitate providing aiming assistance embodiments of wireless nodes are adapted to include a plurality of sensors operable to provide information useful in environmental analysis for determining proactive orientation guidance information. Wireless nodes adapted according to embodiments additionally or alternatively utilize information obtained externally useful in determining proactive orientation guidance information. Embodiments of the invention utilize the foregoing sensor information and externally sourced information to determine proactive orientation guidance information.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: April 18, 2017
    Assignee: PISMO LABS TECHNOLOGY LIMITED
    Inventors: Travis Durick, Yu Yeung, Ming Pui Chong, Alex Wing Hong Chan
  • Patent number: 9625574
    Abstract: The present invention relates to a method and system for identifying and eliminating second time-around ambiguous targets and, more particularly, to a method and system for identifying and eliminating second time-around ambiguous targets using waveform phase modulation.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: April 18, 2017
    Assignee: SRC, INC.
    Inventors: Robert E. Hiemenz, Daniel D. Thomas, Jr.
  • Patent number: 9575171
    Abstract: A radio altimeter with at least one transmitting antenna and at least one receiving antenna in a single housing reduces coupling with antennae housings shaped to deflect electromagnetic signals, and spacing between the antennae based on the phase of the transmitting signal. Coupling of less than ?40 dB is filtered by software using adaptive leakage cancelling.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: February 21, 2017
    Assignee: Rockwell Collins, Inc.
    Inventor: Howard Tetrault
  • Patent number: 9574854
    Abstract: According to one embodiment, an apparatus includes a directed energy device configured to direct energy onto a remote target under control of a controller. The receives a distance measurement to the target using a rangefinder, determines whether the target is within an expected range; and modifies a power output of the directed energy device when the target is not within the expected range.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: February 21, 2017
    Assignee: Raytheon Company
    Inventor: Matthew Jonas
  • Patent number: 9516711
    Abstract: A light-emitting diode module is provided that includes a housing and a printed circuit board, which is connected to a light-emitting diode and which has an LED driver, a control module, and a circuit arrangement. The circuit arrangement has a DC/DC converter and a bypass connected in parallel to the DC/DC converter. The bypass is activatable by a comparator circuit. The comparator circuit is arranged between an input of the circuit arrangement and the DC/DC converter and detects the level of an input voltage of the circuit arrangement and compares it with a first and second threshold value. The comparator circuit activates the bypass when the input voltage is below the first threshold value and deactivates the bypass when the second threshold value is exceeded.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: December 6, 2016
    Assignee: SCHOTT AG
    Inventors: Achim Weil, Bjoern Bleisinger, Stefan Siebenrock, Ulrich Schmitt
  • Patent number: 9514644
    Abstract: A system (8) for implementing at least one action based on a location of a mobile communication device (10). The system (8) comprises a controller (16), storage (18) storing electronic program instructions for controlling the controller (16), and input means (24). The controller (16) is operable, under control of the electronic program instructions, to receive input via the input means (24), the input comprising an indication of a location of the mobile communication device (10), process the indication to determine whether the location of the mobile communication device (10) corresponds to a location of a predefined area, and implement the at least one action based on the determination.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: December 6, 2016
    Assignee: Pinpark IP Pty Ltd.
    Inventor: Charl Fourie
  • Patent number: 9507053
    Abstract: The present disclosure relates to a method of inferring data relating to atmospheric conditions within an airspace of interest using observations of aircraft trajectories. Information relating to aircraft intent may also be inferred. Aircraft flying within the airspace are identified, and their trajectories and aircraft type are determined. Aircraft performance data relating to that type of aircraft is retrieved from memory, along with any filed aircraft intent data. Then, the atmospheric conditions data and, optionally, any missing aircraft intent data that, in combination with the filed aircraft intent data and the aircraft performance data, would give rise to the determined trajectory for each processed aircraft are inferred. The atmospheric data and optionally the missing aircraft intent data are provided as an output.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: November 29, 2016
    Assignee: THE BOEING COMPANY
    Inventors: Francisco A. Navarro, Eduardo Gallo
  • Patent number: 9491635
    Abstract: A network for providing air-to-ground (ATG) wireless communication in various cells may include an in-flight aircraft including an antenna assembly, a plurality of ATG base stations, a plurality of terrestrial base stations. Each of the ATG base stations defines a corresponding radiation pattern, and the ATG base stations are spaced apart from each other to define at least partially overlapping coverage areas to communicate with the antenna assembly in an ATG communication layer defined between a first altitude and a second altitude. The terrestrial base stations are configured to communicate primarily in a ground communication layer below the first altitude. The terrestrial base stations and the ATG base stations are each configured to communicate using the same radio frequency (RF) spectrum in the ground communication layer and ATG communication layer, respectively.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: November 8, 2016
    Assignee: SMARTSKY NETWORKS LLC
    Inventors: Douglas Hyslop, Ryan M. Stone
  • Patent number: 9488717
    Abstract: A micro-radar is disclosed that is operated based upon two Digital to Analog Converter (DAC) outputs that control its internal timing and Intermediate Frequency (IF) signal frequency. Calibration and temperature compensation is done through estimating the duty cycle of the transmit signal and possibly the reception signal that stimulate a pulse generator to create the transmit pulse and the reception pulse and adjusting one or both DAC outputs. Sensor processors, wireless sensor nodes and wireline sensor nodes are disclosed for operating the micro-radar. An integrated circuit is disclosed implementing all or portions of the micro-radar. Access points, servers as well as systems that include but are not limited to a traffic monitoring system, a traffic control system, a parking management system and/or a production management system are also disclosed.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: November 8, 2016
    Assignee: Sensys Networks, Inc.
    Inventor: Robert Kavaler
  • Patent number: 9350413
    Abstract: A method of generating a correlation function for a CBOC(6,1,1/11) signal includes generating a first correlation function by performing a first elimination operation on a first and twelfth partial correlation function pair of 12 partial correlation functions, generating a fourth correlation function by performing a first elimination operation between second and third correlation functions that are generated by performing a second elimination operation between two difference functions between sixth and seventh partial correlation functions and the first correlation function, and generating a main correlation function by summing resulting waveforms that are generated by performing a first elimination operation between each of the 12 partial correlation functions and the fourth correlation function or by performing a first elimination operation between each of the remaining 8 partial correlation functions, excluding first, sixth, seventh and twelfth partial correlation functions from the 12 partial correlation
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: May 24, 2016
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Keun Hong Chae, Seok Ho Yoon
  • Patent number: 9092724
    Abstract: The invention relates to a method for decision support of a first combat aircraft in a duel situation with a second combat aircraft.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: July 28, 2015
    Assignee: SAAB AB
    Inventors: Anders Lundqvist, Vibeke Kensing
  • Patent number: 9081094
    Abstract: Embodiments described herein are directed towards a radar altimeter for mounting onto an aircraft. The radar altimeter includes a base configured to mount to an external surface of an aircraft, the base having an inner portion and a flange disposed around the inner portion, wherein the inner portion has a generally rectangular geometry defining a long dimension and a short dimension. A chassis is mounted to the base and has a planar portion that is disposed perpendicular to a plane formed by the base. A plurality of circuit boards are mounted to the planar portion of the chassis and disposed parallel to the planar portion of the chassis. The base is configured to mount over a second aperture in the external surface of the aircraft such that the chassis and the plurality of circuit boards are placed through the aperture and are disposed inside of the aircraft.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: July 14, 2015
    Assignee: Honeywell International Inc.
    Inventor: Keone J. Holt
  • Patent number: 9024805
    Abstract: Methods and systems of determining the altitude of an aircraft are provided. The method includes receiving data associated with aircraft position, a position of a first point and a second point on the runway, and an altitude of the first point and the second point, radar returns from the runway. The method includes determining a first range and second range between the aircraft, and the first point and the second point. The method includes determining a first angle and a second angle between the first point and second point, and the aircraft. The method includes determining a corrected angle. The method includes determining the altitude of the aircraft based on the corrected angle, the runway altitude of at least one of the first point and the second point, and at least one of the first range and the second range.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: May 5, 2015
    Assignee: Rockwell Collins, Inc.
    Inventors: Richard D. Jinkins, Daniel L. Woodell, Richard M. Rademaker
  • Patent number: 8952842
    Abstract: An altimetry system for a satellite, including an altimeter transmitting and receiving signals on at least one first frequency band; a radiometer receiving signals on at least one second frequency band, the altimeter and the radiometer being connected to one and the same antenna; reception means common to the altimeter and to the radiometer, and capable of amplifying and filtering the signals received from the antenna on a frequency band including the first frequency band and the second frequency band; means for separating the signals on the first frequency band from the signals on the second frequency band; the signals on the first frequency band being exploited to estimate an altimetric distance of the satellite, and radiometric measurements being exploited in order to correct the estimate.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: February 10, 2015
    Assignee: Thales
    Inventors: Richard Jacques, Nicolas Taveneau
  • Patent number: 8952841
    Abstract: A traffic collision avoidance system (TCAS) based navigation system including a TCAS equipped with a directional antenna, the TCAS configured to generate a RF transmission pattern at a selected frequency, the transmission pattern including a plurality of directional beams, receive a plurality of RF signals reflected from the ground across a selected frequency band, the selected frequency band including the selected frequency, and measure frequency differences between one or more beams of the plurality of RF beams and one or more beams of the plurality of RF signals reflected from the ground, and a computing systems in communication with the TCAS, the computing system configured to calculate a ground speed of the aircraft utilizing the measured frequency differences, calculate a drift angle of the aircraft utilizing the measured plurality of frequency differences, receive a heading reference of the aircraft, and determine an aircraft navigation parameter of the aircraft.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: February 10, 2015
    Assignee: Rockwell Collins, Inc.
    Inventors: Phillip L. Ellery, Mark A. Billsberry
  • Patent number: 8866667
    Abstract: One embodiment is directed towards a FMCW radar having a single antenna. The radar includes a transmit path having a voltage controlled oscillator controlled by a phase-locked loop, and the phase-locked loop includes a fractional-n synthesizer configured to implement a FMCW ramp waveform that ramps from a starting frequency to an ending frequency and upon reaching the ending frequency returns to the starting frequency to ramp again. The radar also includes a delay path coupled between a coupler on the transmit path and a mixer in a receive path. The delay path is configured to delay a local oscillator reference signal from the transmit path such that the propagation time of the local oscillator reference signal from the coupler to the mixer through the delay path is between the propagation time of signal reflected off the antenna and the propagation time of a leakage signal through a circulator.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: October 21, 2014
    Assignee: Honeywell International Inc.
    Inventor: David C. Vacanti
  • Patent number: 8803727
    Abstract: A method for producing a sensor-supported, synthetic view for landing support of helicopters under brown-out or white-out conditions is provided. A virtual 3-D representation of the landing zone is continuously created from 3-D data of the intended landing zone recorded during the landing approach and a monitoring routine is available to ensure that no 3-D data that was produced under brown-out or white-out conditions is considered in the representation. As soon as the monitoring routine detects that 3-D data has been recorded under brown-out or white-out conditions, an additional radar sensor is activated to continuously produce distance and/or Doppler data of potential objects entering the landing zone, the objects being displayed to a pilot of the landing helicopter in the synthetic view.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: August 12, 2014
    Assignee: EADS Deutschland GmbH
    Inventors: Thomas Muensterer, Matthias Wegner, Peter Kielhorn
  • Patent number: 8788128
    Abstract: In the examples described the forward-looking radar generated real-time terrain model (or in an alternative example in combination with a terrain database), can allow the use of a radio altimeter to compute aircraft vertical position relative to the runway threshold. Such a system typically provides improved accuracy for precision landings.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: July 22, 2014
    Assignee: Rockwell Collins, Inc.
    Inventor: Patrick D. McCusker
  • Patent number: 8773301
    Abstract: A method of determining an angle within the beam to a target using an airborne radar includes receiving first data associated with first returns associated with a first portion of an antenna. The method further includes receiving second data associated with second returns associated with a second portion of an antenna, wherein the first portion is not identical to the second portion. The method further includes determining the angle within the beam to the target using the first and second data.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: July 8, 2014
    Assignee: Rockwell Collins, Inc.
    Inventor: Daniel L. Woodell
  • Patent number: 8698669
    Abstract: Another embodiment of the disclosure relates to an altitude system for an aircraft. The aircraft radar system includes a processor configured to determine an altitude of the aircraft using runway position information, and an angle to the runway associated with a radar beam to the runway. The angle to the runway is being determined using a pointing angle of the antenna adjusted with an angular offset. The angular offset is determined from phase processing.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: April 15, 2014
    Assignee: Rockwell Collins, Inc.
    Inventors: Daniel L. Woodell, Richard D. Jinkins, Richard M. Rademaker, Patrick D. McCusker
  • Patent number: 8629799
    Abstract: A radar system (22) includes a transmitter (45), a receiver (59), and a software defined radio (SDR) peripheral (40). Methodology (80) for investigating a target zone (26) utilizing the system (22) entails generating (106) a direct sequence spread spectrum (DSSS) code (120) having a code length (122) corresponding to a time duration of radio wave travel between the transmitter (45), the target zone (26), and the receiver (59) at a carrier frequency (112). A beacon signal (34), modulated (108) by the DSSS code (120), is transmitted (152) from the transmitter (45) toward the target zone (26) and a return signal (38) is received (156) at the receiver (56). The return signal (38) is compared (170) to a replica signal (168) characterized by the DSSS code (120), and presence of an object (32) in the target zone (26) is ascertained (178) when the return signal (38) matches the replica signal (168).
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: January 14, 2014
    Assignee: Sandia Research Corporation
    Inventor: Steven M. Shope
  • Patent number: 8604970
    Abstract: Present novel and non-trivial systems and methods for generating data in a digital radio altimeter system and detecting transient radio altitude (“RA”) information are disclosed. Preliminary RA data is generated by a preliminary spectrum analyzer by analyzing spectrum data (e.g., frequency spectrum data) within a first range, where the spectrum data is representative of RA information. Final RA data is generated by a final spectrum analyzer by analyzing the spectrum data within a second range, where the second range is based upon the preliminary RA data and final RA data previously-generated and fed through a feedback data generator. The final RA data may be provided as source data to one or more user units. One user unit may be a transient RA detector which detects transient RA information based upon the preliminary RA data and the final RA data.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: December 10, 2013
    Assignee: Rockwell Collins, Inc.
    Inventor: Trevor R. Trinkaus
  • Patent number: 8558731
    Abstract: A method of determining an angle within the beam to a target using an airborne radar includes receiving first data associated with first returns associated with a first portion of an antenna. The method further includes receiving second data associated with second returns associated with a second portion of an antenna, wherein the first portion is not identical to the second portion. The method further includes determining the angle within the beam to the target using the first and second data.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: October 15, 2013
    Assignee: Rockwell Collins, Inc.
    Inventor: Daniel L. Woodell
  • Publication number: 20130214963
    Abstract: One embodiment is directed towards a FMCW radar having a single antenna. The radar includes a transmit path having a voltage controlled oscillator controlled by a phase-locked loop, and the phase-locked loop includes a fractional-n synthesizer configured to implement a FMCW ramp waveform that ramps from a starting frequency to an ending frequency and upon reaching the ending frequency returns to the starting frequency to ramp again. The radar also includes a delay path coupled between a coupler on the transmit path and a mixer in a receive path. The delay path is configured to delay a local oscillator reference signal from the transmit path such that the propagation time of the local oscillator reference signal from the coupler to the mixer through the delay path is between the propagation time of signal reflected off the antenna and the propagation time of a leakage signal through a circulator.
    Type: Application
    Filed: October 29, 2012
    Publication date: August 22, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: HONEYWELL INTERNATIONAL INC.
  • Publication number: 20130214964
    Abstract: Embodiments described herein are directed towards a radar altimeter for mounting onto an aircraft. The radar altimeter includes a base configured to mount to an external surface of an aircraft, the base having an inner portion and a flange disposed around the inner portion, wherein the inner portion has a generally rectangular geometry defining a long dimension and a short dimension. A chassis is mounted to the base and has a planar portion that is disposed perpendicular to a plane formed by the base. A plurality of circuit boards are mounted to the planar portion of the chassis and disposed parallel to the planar portion of the chassis. The base is configured to mount over a second aperture in the external surface of the aircraft such that the chassis and the plurality of circuit boards are placed through the aperture and are disposed inside of the aircraft.
    Type: Application
    Filed: February 6, 2013
    Publication date: August 22, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventor: HONEYWELL INTERNATIONAL INC.
  • Publication number: 20130169472
    Abstract: An altimetry system for a satellite, including an altimeter transmitting and receiving signals on at least one first frequency band; a radiometer receiving signals on at least one second frequency band, the altimeter and the radiometer being connected to one and the same antenna; reception means common to the altimeter and to the radiometer, and capable of amplifying and filtering the signals received from the antenna on a frequency band including the first frequency band and the second frequency band; means for separating the signals on the first frequency band from the signals on the second frequency band; the signals on the first frequency band being exploited to estimate an altimetric distance of the satellite, and radiometric measurements being exploited in order to correct the estimate.
    Type: Application
    Filed: June 14, 2012
    Publication date: July 4, 2013
    Applicant: THALES
    Inventors: Richard Jacques, Nicolas TAVENEAU
  • Patent number: 8432308
    Abstract: A method and device for monitoring radioaltimetric heights of an aircraft, the device including an auxiliary height generation device that generates an auxiliary reliability height of an aircraft. The device also includes a determination device that determines with the aid of this auxiliary height, an error in incoherent data which are received from two radioaltimeters. To this end, the most reliable reading from the radioaltimeters is determined and sent to a user device.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: April 30, 2013
    Assignee: Airbus Operations (SAS)
    Inventors: Philippe Delga, Nour-Ed-Din Houberdon
  • Patent number: 8427360
    Abstract: According to one aspect of the present invention, there is provided a radar altimeter which utilizes a downward looking MIMO phased array to form multiple beams, covering a relatively wide sector, e.g., +/?60 degrees or thereabouts. The distance to the ground is then measured in each beam allowing the ground profile to be formed. The beams may be tilted forward to cover from about +90 degrees forward (horizontal) to about 30 degrees behind nadir. The provision of such a forward tilt gives a greater degree of coverage in the direction of approach vector to the ground. This additional cover enables the altimeter to more accurately detect other vehicles in the proximity to the current approach vector of the vehicle to the desired landing zone.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: April 23, 2013
    Inventor: Dennis Longstaff
  • Patent number: 8410975
    Abstract: Present novel and non-trivial systems and methods for altitude data from a radar system and employing such data to verify altitude data from another source. A processor receives reflection point data generated by an aircraft radar system and reference point data from an applicable data source. Based upon the reflection point data and reference point data, first altitude data representative of a first measurement of aircraft altitude is generated. Then, the processor receives second altitude data representative of a second measurement of aircraft altitude from another source. Validity of the second altitude data may be determined by comparing it with the first data, after which validity advisory data may be generated that, is responsive to the validity determination. Then, the processor may provide the validity advisory data to a presentation system, whereby validity information of the second altitude data is presented to the pilot.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: April 2, 2013
    Assignee: Rockwell Collins, Inc.
    Inventors: Douglas A. Bell, Richard D. Jinkins, Sarah Barber, Felix B. Turcios
  • Patent number: 8354951
    Abstract: A method for determining position and orientation of a rotating wing aircraft (e.g. helicopter) with respect to a ground station includes transmitting an electromagnetic signal from the aircraft. The signal includes a plurality of electromagnetic signals, each signal having a different selected frequency. The signal is detected at an array of sensors disposed on the ground surface in a selected pattern. The array includes at least one reference sensor and at least three spaced apart time difference determination sensors. A difference in arrival time of the signals between the reference sensor and each of the time difference determination sensors is determined and a spatial position of the aircraft is determined from the time differences.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: January 15, 2013
    Assignee: Intelligent Sciences, Ltd.
    Inventors: Jacques Y. Guigné, James A. Stacey, Nicholas G. Pace
  • Patent number: 8332137
    Abstract: A navigation system includes a pressure sensor, a calibration module in communication with the pressure sensor, and an altitude module in communication with the calibration module. The calibration module is configured to determine a dynamic pressure proportionality coefficient based at least in part on a static pressure proportionality coefficient, a measured pressure value from the pressure sensor, and a velocity value. The altitude module is configured to calculate a sensor-based altitude value based at least in part on the determined dynamic pressure proportionality coefficient.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: December 11, 2012
    Assignee: Qualcomm Incorporated
    Inventors: SaiPradeep Venkatraman, Quanwei Liu, Lionel Garin