Abstract: The present disclosure relates to a global positioning system for compensating for relative positioning errors between vehicles. A follower vehicle of the global positioning system includes a correction message receiver configured to receive correction message including velocity information about a leader vehicle and GNSS raw measurements of the leader vehicle from the leader vehicle, a relative positioning result calculator configured to calculate a relative positioning result between the leader vehicle and the follower vehicle based on the GNSS measurements of the leader vehicle, and a relative positioning result corrector configured to calculate a corrected relative positioning result through an operation based on the calculated relative positioning result and the velocity information about the leader vehicle.

Abstract: Common view time transfer and related apparatuses and methods are disclosed. An apparatus includes a receiver oscillator to provide a local clock signal and one or more processors. The one or more processors are to perform, at least partially based on the local clock signal, event time tagging pre-processing at least partially responsive to satellite signals received from one or more satellites to generate a decimated precision correction state estimate; determine, per satellite signal pseudo range residuals; determine a navigation engine clock state; perform a precision clock state pre-processing operation at least partially responsive to the navigation engine clock state and the decimated precision correction state estimate to generate a precision navigation clock state; and generate a common view real time report at least partially responsive to the per satellite signal pseudo range residuals and the precision navigation clock state.

Abstract: A system and method for obtaining location data for a portable device relative to an object. The system and method may include an object device disposed in a fixed position relative to the object, the object device having an antenna configured to communicate wirelessly via UWB with the portable device via a communication link. The system may include a control system, such as a robot and/or a remote controller, configured to obtain one or more samples pertaining to communications between the portable device and the object device.

Abstract: A method for maintaining timing accuracy in a mobile device includes: obtaining a range estimate using a signal received from a timing information source via a communication unit of the mobile device; obtaining position and velocity estimate information for the mobile device from a source of position and velocity information separate from the timing information source, the position and velocity estimate information being obtained from at least one sensor of the mobile device, or via a communication unit of the mobile device using a Vehicle-to-Everything wireless communication protocol, or a combination thereof; determining estimated clock parameters based on the position and velocity estimate information and the range estimate; and adjusting a clock of the mobile device based on the estimated clock parameters in response to a position-and-velocity-assisted timing uncertainty corresponding to the estimated clock parameters being below a timing uncertainty threshold.

Abstract: Methods and systems to determine a change in a location of a device relative to an initial location of the device are provided. The method includes periodically receiving a parameter of the device and determining the change in the location of the device relative to an initial location of the device based on a change in the parameter over a period of time. In an example, the method includes determining a first trend in the parameter over a first period of time, determining a second trend in the parameter over a second period of time, and determining a change in the location of the device from a first location to a second location by comparing the first trend to the second trend.

Abstract: A system and method for determining a roadway bank angle based on vehicle information. The method may include the steps of: obtaining vehicle information from at least one vehicle, the vehicle information is obtained from at least one of a global navigational satellite system (GNSS) receiver and one or more onboard vehicle sensors, and the GNSS receiver and the one or more onboard vehicle sensors are installed in the at least one vehicle; performing a roadway bank angle determination process using the obtained vehicle information to obtain a roadway bank angle; and updating a representative roadway bank angle based on the roadway bank angle.

Abstract: The invention relates to a method for planning the flight of a pilot-piloted aircraft and comprising a tactile head-down display defining a display plane and displaying images representing a three-dimensional surface viewed in perspective through the display plane, and arranged with respect to this display plane according to a display parameter. The method comprises the following steps: acquisition of information relating to a tactile displacement on the display screen; association of the information relating to the tactile displacement with a first set of points located in the display plane; projection of the first set of points on the displayed three-dimensional surface in order to obtain a second set of geographical points located on this three-dimensional surface; and display of images representing the second set.

Abstract: The invention relates to methods, notably carried out by global or regional navigation satellite system (NSS) receivers, which involve receiving satellite-specific, nadir-angle dependent correction information associated with each of at least two NSS satellites among a plurality of NSS satellites. The correction information is useful to correct observed NSS signals, so as to mitigate the effects of satellite-specific, nadir-angle dependent biases in the NSS signals, and thus improve the performance of position determination systems. The invention also relates to methods for generating such correction information, to methods for designing a satellite, to NSS receivers, to apparatuses for generating correction information to be sent to the receivers, and to computer programs and storage mediums.

Abstract: Technology for determining a geographical location of a ground receiver is disclosed. A plurality of radio frequency (RF) signals from a plurality of RF signal carriers may be received at the ground receiver. The plurality of RF signal carriers may include satellites operated by a foreign entity or non-global positioning system (non-GPS) satellites. The ground receiver may measure a Doppler shift associated with each of the plurality of RF signals. The geographical location of the ground receiver may be determined in X, Y and Z coordinates based in part on the Doppler shift associated with each of the plurality of RF signals.

Abstract: Some embodiments provide an account-access recovery method that receives a request to recover access to an account. The method also assesses recent usage of a device that is associated with the account. The method also, based on the assessment, selects a recovery process from a group of different recovery processes for regaining access to the account. The method also provides the selected recovery process to a party that is requesting the access recovery.

Abstract: A position detection system is provided which is capable of inhibiting an increase in system costs and improving accuracy of detecting a position of a terminal. In the position detection system, a first terminal measures radio waves from a wireless connection device or a second terminal, and transmits a measurement result to a position detection server through the wireless connection device.

Abstract: Some embodiments provide an account-access recovery method that receives a request to recover access to an account. The method also assesses recent usage of a device that is associated with the account. The method also, based on the assessment, selects a recovery process from a group of different recovery processes for regaining access to the account. The method also provides the selected recovery process to a party that is requesting the access recovery.

Abstract: A base station may obtain channel usage information identifying usage of one or more unlicensed radio frequency (RF) spectrum bands. The base station may select a selected band, of the one or more unlicensed RF spectrum bands, based on the channel usage information. The base station may select one or more RF channels, of multiple RF channels included in the selected band, based on a congestion value of the selected band. The congestion value may be determined based on values of the channel usage information corresponding to the selected band. The selected RF channel may include an impaired RF channel that may not permit full bandwidth utilization due to constraints. The base station may communicate with user equipment via the one or more RF channels of the selected band.

Abstract: A positioning system comprises an onboard GNSS satellite receiver in a mobile element belonging to a user which estimates the position of said mobile element at various instants, a first processing module determining a consistency indicator by combining the estimated positions and data provided by secondary information sources, using a dynamic model of movement of the mobile elements to be positioned. The indicator is determined by comparing a speed, acceleration, gyration triplet derived from direction and velocity measurements taken by the mobile element, to a dynamic model of movement of an object, vehicle, person or animal to be positioned. The system comprises a consolidation module containing means storing the positions estimated at various instants, a digital filter to obtain a filtered position from the stored positions of a user, the consistency indicator calculated from filtered positions; and detection means determining from the consistency indicator whether the estimated positions are falsified.

Abstract: Apparatus for providing timing information, the apparatus comprising: a primary reference time clock (PRTC) that provides a reference time of day (ToD) and a reference frequency; a packet master clock that receives the ToD and reference frequency and is configured to distribute timing to a slave clock in accordance with a timing over packet procedure responsive to the ToD and the reference frequency; and a housing that houses the PRTC and packet master clock which may be plugged into a conventional small form factor (SFP) compliant cage to connect the packet master clock to a packet switched network (PSN).

Abstract: A navigation system includes a Global Positioning System (GPS) enabled wireless phone and a GPS navigation system. The GPS enabled wireless phone includes a GPS receiver, a communications interface, and processing circuitry coupled to the GPS receiver and to the communications interface. The GPS navigation system includes a GPS receiver, a communications interface operable to communicatively couple to the communications interface of the GPS enabled wireless phone, and processing circuitry coupled to the GPS receiver and to the communications interface. The processing circuitry of the GPS navigation system is operable to establish device pairing with the GPS enabled wireless phone and to exchange GPS information and other information with the GPS enabled wireless phone via the secure link.

Abstract: In embodiments of the present invention improved capabilities are described for a virtualization environment adapted for development and deployment of at least one software workload, the virtualization environment having a metamodel framework that allows the association of a policy to the software workload upon development of the workload that is applied upon deployment of the software workload. This allows a developer to define a security zone and to apply at least one type of security policy with respect to the security zone including the type of security zone policy in the metamodel framework such that the type of security zone policy can be associated with the software workload upon development of the software workload, and if the type of security zone policy is associated with the software workload, automatically applying the security policy to the software workload when the software workload is deployed within the security zone.

Abstract: A system and method are provided for determining a distribution of a position error of a receiver of localization signals, the signals being sent by at least one satellite. The system includes the receiver, one position of which is known as first position and is affected by an error, known as first error, having a distribution, known as first distribution, a first device for determining positions of the satellite(s), known as second positions, a device for transmitting the second position of the first determination device to the receiver, and the first distribution is defined by at least one first cumulant, of higher-than-second order.

Abstract: A navigation device includes an antenna to receive a satellite signal, a control unit to control provision of the satellite signal, an amplifier circuit for amplification of the satellite signal, and a positioning unit to position the navigation device based upon the satellite signal. When the navigation device has been successfully positioned, the control unit disables the amplifier circuit, and provides the satellite signal to the positioning unit for position calculation.

Abstract: An object is to provide in a positioning device of a moving body such as a vehicle, a technique which can modify a built-in clock error of a moving body to increase accuracy of a velocity. The positioning device includes a built-in clock error estimating unit which estimates a built-in clock error of the vehicle as a built-in clock error based on a difference between a delta range and a calculated range rate, and a range rate estimating unit which estimates a vehicle stop range rate based on position and velocity of GPS satellite based on transmission signal and a vehicle position, and modifies a calculated range rate, based on the built-in clock error. Further, the positioning device includes an own vehicle velocity calculating unit which calculates own vehicle velocities in three axial directions which form an orthogonal coordinate system, based on a navigation matrix, the vehicle stop range rate and the modified calculated range rate.

Abstract: A method, device and circuit for determining a position of a mobile cellular communication device is disclosed. A pseudolites positioning signal is received in a first frequency band at an antenna of the mobile cellular communication device. The pseudolites signal is converted from the first frequency band to a Global Navigation Satellite System (GNSS) frequency band to obtain a corresponding positioning signal in the GNSS frequency band. The converted positioning signal is delivered to a GNSS chipset of the mobile cellular communication device. The GNSS chipset determines the position of the mobile cellular communication device using the converted positioning signal.

Abstract: A GPS positioning method for a mobile terminal, and a mobile terminal are provided. The method includes: after GPS positioning is started, acquiring a first cell identifier of a first cell in which the mobile terminal is located; acquiring, according to the first cell identifier, first latitude and longitude information corresponding to the first cell identifier from a correspondence table stored on the mobile terminal, where the correspondence table includes a cell identifier and latitude and longitude information corresponding to the cell identifier; and with reference to the first latitude and longitude information, and time information and ephemeris information that are acquired in advance, performing GPS positioning on the mobile terminal by using a GPS receiver of the mobile terminal.

Abstract: Disclosed are methods, systems and/or devices to calibrate a network time by acquisition of satellite positioning system (SPS) signals and different instances of time, and time-tagging SPS times according to the network time. In particular, the network time may be calibrated based, at least in part, on a first difference between first and second SPS times obtained at two SPS position fixes and a second difference between corresponding first and second time stamps.

Abstract: Systems and methods are provided for monitoring carrier phase anomalies in a range finding system. A relative carrier phase between first and second antennas is predicted as a function of a relative position between the two antennas. A relative carrier phase between the first and second receivers is measured based upon at least one transmitted signal received at each of the first and second antennas. An anomaly detection metric is calculated as a difference between the measured relative carrier phase and the predicted relative carrier phase. It is then determined if an anomaly is present according to the anomaly detection metric.

Abstract: An electronic device includes: a satellite signal receiving section that receives a satellite signal with which positioning information is overlapped from a positioning satellite; a reception control section that controls driving of the satellite signal receiving section; and a detecting section that detects a state change of the electronic device, in which the reception control section allows the satellite signal receiving section to enter a driving state when the detecting section detects the state change to receive the satellite signal. According to this electronic device, it is possible to reduce a TTFF at the positioning start, and to reduce power consumption in the satellite signal reception.

Abstract: A system for sharing data between aircraft including a GPS unit for establishing a first aircraft's location and altitude from a network of global satellites and an automatic dependent surveillance broadcast (ADS-B) unit broadcasting a first aircraft's identification as well as it's location and altitude. The system also includes a mechanism for measuring the wind speed and turbulence at the location of the first aircraft and for broadcasting that information to other aircraft in the area. A second aircraft as well as other aircraft also include an ADS-B receiver for receiving such information.

Abstract: The present invention relates to processing information generated by GNSS receivers received signals such as GPS, GLONASS, etc. GNSS receivers can determine their position in space. The receivers are capable of determining both coordinates and velocity of their spatial movement. When a receiver is used in any machine control systems, velocity vector heading (in other words, velocity vector orientation) should be determined along with velocity vector's absolute value. Angle, determining velocity vector orientation, is calculated based on velocity vector projections which are computed in navigation receivers. The accuracy of velocity vector orientation calculated based on velocity vector projections strongly enough depends on velocity vector's absolute value. To enhance the accuracy, a method of smoothing primary estimates of velocity vector orientation angles using a modified Kalman filter has been proposed.

Abstract: A method for reducing the positioning time of a GPS receiver is disclosed. In response to a request from a user function for positioning data a GPS management section instructs a device control section to lower the functions of a group of components. The lowering of the functions of the components reduces the noise level. The GPS management section operates the GPS receiver. The GPS receiver executes an acquisition process in an environment with a low noise level. After completion of the acquisition process, the functions of the component are restored.

Abstract: Control and feature systems for processing signals from a satellite positioning system include an expert system receiver manager; a joint detection, carrier centring and bit sync acquisition subsystem; peak detection; a multi-dimensional measurement interpolation subsystem; a system for mode switching between a navigational signal; and power control module for receiver.

Abstract: Devices and methods are directed to estimating a position of the device/user using a delta range measurement (DRM) module to measure a range difference between first and second range values for first and second time instants based on, e.g., carrier phase measurements. The time period between the first and second time instants may be greater than a periodic interval at which a new phase value is sampled. This architecture of the DRM module provides extended delta ranges values which also overlap in time, enabling a combination of improved dilution of precision and keeping fast generation of delta range values suitable for use in continuous filtering. A filter, e.g., a Kalman filter, may be used compute current estimates of two positions, or a combination of a position and a position difference, of the device based at least on the range difference and a priori estimate(s) of the position(s) of the device.

Abstract: A system comprises a processing server programmed to determine which GPS satellites are currently available for use within a field of view of the processing server. The processing server is programmed to transmit to a terrestrial beacon information about a GPS channel of a GPS satellite which is not currently within the field of view of the processing server. The terrestrial beacon is configured to broadcast a navigation signal useful to determine location using the identified GPS channel. The processing server transmits the ephemeris of the terrestrial beacon to a GPS receiver. The receiver receives the signal from the beacon, and uses the ephemeris received from the processing server for calculating the receiver's location.

Abstract: A combination of active reader tags and ultra wideband (UWB) radar systems provide real-time monitoring of first responders, with identification of each team member using active tags, and detection of victims or other subjects using motion or breathing detection, in a field of operations such as a building affected by fire or hazardous material or search and rescue mission area. Initially, a cluster of miniaturized radars (sensors) act in a static mode of operation, gathering static radar information used to depict a constructed layout of the premises. The cluster of radars then operate in a dynamic mode that detects motion or breathing of multiple subjects inside the field of operations. With dual mode operation the system can read the active tags identification, and by triangulation, display the position of each first responder with its identification and positions of subjects on a composite image of the constructed layout.

Abstract: A method and a system for reducing time to first fix (TTFF) in a satellite navigation receiver (SNR) includes constructing an integrated satellite constellation system (ISCS) for transmitting navigation signals over a combination of a first carrier frequency, a second carrier frequency, and a third carrier frequency. The ISCS includes a predetermined number of geosynchronous satellites positioned at first predetermined geographic coordinates in a geosynchronous orbit and a predetermined number of geostationary satellites positioned at second predetermined geographic coordinates in a geostationary orbit. The ISCS transmits navigation data to the SNR over the combination of the first carrier frequency, the second carrier frequency, and the third carrier frequency in reduced time, thereby reducing the TTFF in the SNR. The method and the system also reduce TTFF in a hot start mode and a snap start mode of the SNR by utilizing the third carrier frequency as a data channel.

Abstract: Method, system, and device are provided for position determination with the use of predicted ephemeris to reduce the time-to-first-fix. The method includes: in a device, receiving broadcast orbit data and clock states from a plurality of satellites to determine first assistance data for the plurality of satellites, and numerically predicting first ephemeris for the plurality of satellites using the first assistance data. The method also includes: in a server system, receiving precise orbit data and accurate satellite clock states from a global GNSS service network to determine second assistance data; in a device, receiving the second assistance data and numerically predicting second ephemeris using the second assistance data.

Abstract: A method, apparatus, and system for reducing memory and communication bandwidth requirements for digital signal samples in Global Navigational Satellite System (GNSS) receivers using an adaptive compression/decompression process are described.

Abstract: An information processing apparatus capable of detecting an emergency signal includes a first obtainment unit configured to obtain positional information representing a current position of the information processing apparatus; a selection unit configured to select one of a plurality of broadcast stations using the positional information obtained by the first obtainment unit; a reception unit configured to receive a radio wave signal at a frequency of the broadcast station selected by the selection unit; and a first output unit configured to output an audio signal obtained by demodulating the radio wave signal received by the reception unit.

Abstract: Systems, methods and apparatus are provided through which in some implementations a geographic location of a beacon is determined by a component integrated within or in close proximity to the beacon and the geographic location is communicated to an external network using a wireless communications channel between the beacon and the external network.

Abstract: Systems, methods and apparatus are provided through which in some implementations a geographic location of a beacon is determined by a component integrated within or in close proximity to the beacon and the geographic location is communicated to an external network using a wireless communications channel between the beacon and the external network.

Abstract: An echo signal processing device is provided. The device includes an image generating module configured to generate an echo image at a plurality of timings, the echo image generated based on echo signals received by an antenna installed in a movable body. The device also includes a positional information acquiring module configured to acquire absolute positional information of the movable body. The device also includes an analytic area specifying module configured to specify an analytic area in the echo image by an absolute position, based on the absolute positional information. The device also includes a storage configured to store analytic area images, each analytic area images being a part of each echo image, the part corresponding to the analytic area. The device also includes a calculating module configured to calculate echo signal information regarding the echo signals from the analytic area, based on the stored analytic area images.

Abstract: A system and method of continuous carrier wave reconstruction includes a radio navigation receiver that includes one or more processors, memory coupled to the one or more processors, and an input for receiving a signal from a transmitter. The signal has a phase. The one or more processors are configured to obtain phase lock on the received signal, extract first phase information from the received signal, detect a loss in phase lock on the received signal, and extrapolate second phase information while phase lock is lost using a model of the phase. In some embodiments, the one or more processors are further configured to reconstruct the carrier signal based on the first and second phase information. In some embodiments, the one or more processors are further configured to scale the first and second phase information from a first nominal frequency of the received signal to a different second nominal frequency.

Abstract: A global navigation satellite system (GNSS) enabled device that is configured to distinguish reflected GNSS signals from direct GNSS signals utilizing three-dimensional models of the terrain in the proximity of the GNSS enabled device. By utilizing the identification of reflected GNSS signals, the reflected GNSS signals can be excluded and/or weighted to achieve a more accurate location determination.

Abstract: Methods, systems, computer-readable media, and apparatuses for isolating a desired GNSS signal from a plurality of GNSS signals with the same code are presented. In some embodiments, a method may comprise receiving, by a mobile device, the plurality of GNSS signals, wherein the plurality of GNSS signals include the desired GNSS signal. Subsequently, the method may comprise processing the received plurality of GNSS signals to a down-converted signal, wherein the down-converted signal has a lower frequency than the desired GNSS signal, and wherein the down-converted signal includes a first channel associated with a non-zero frequency. Moreover, the method may comprise processing the down-converted signal to offset the first channel by an offset frequency corresponding to a fraction of the first channel to create an offset down-converted signal. Furthermore, the method may comprise determining the desired GNSS signal from the offset down-converted signal based on the offset frequency.

Abstract: Receiver and methods for determining system time of a navigation system is disclosed. In one example, the receiver includes a baseband processing module and a calculation module. The baseband processing module is configured for obtaining satellite information from the navigation system. The calculation module is configured for estimating a pseudorange based on the satellite information; smoothing the pseudorange via a code; calculating clock bias and clock drift based on the smoothed pseudorange; and determining system time of the navigation system based on the calculated clock bias and clock drift.

Abstract: A method for contextual inference of user activity is disclosed. In one embodiment, an indication of the motion of a pole mounted sensing device comprising at least one motion sensor and a Global Navigation Satellite System (GNSS) receiver configured to at least generate raw GNSS observables is received from the at least one motion sensor. The indication of the motion of the pole mounted sensing device is correlated with an operation defined in a gesture library regarding GNSS data collect by the GNSS receiver at a time when the indication of the motion is detected. The indication and the GNSS data are stored.

Abstract: A method for detecting and mitigating errors in a positioning system includes receiving a first signal from a global navigation satellite system (GNSS) indicative of a first position and a second signal from the GNSS indicative of a second position of a machine, determining a difference between the first position and the second position, detecting an error in a current position of the machine when the difference between the first and the second position exceeds a threshold of one of (a) a maximum distance given a maximum velocity, and (b) an actual distance determined based on an output of an inertial sensor on the machine, and mitigating the detected error in the current position of the machine by switching from an output of the positioning system to a position output determined based upon the output of the inertial sensor to update the current position.

Abstract: A system and method for asset tracking configuration of a mobile terminal. A mobile terminal can be designed to enable a remote determination of an asset position. In one embodiment, the mobile terminal can include a configured function that enables the mobile terminal to reconfigure mobile terminal operation (e.g., activation of a GPS engine).

Abstract: A Global Navigation Satellite System (GNSS) chipset embedded within the cellular device is accessed. The GNSS chipset calculates raw pseudoranges. The raw pseudoranges are extracted from the GNSS chipset for processing elsewhere in the cellular device outside of the GNSS chipset. A position fix is calculated based on the raw pseudoranges. At a first point in time, a first image, and at a second point in time, a second image are obtained with an image capturing device that is in a known physical relationship with the cellular device. An estimate of a distance that the cellular device moved from the first point in time to the second point in time is calculated by processing image data collected from the first point in time to the second point in time. The position fix is processed based on the estimate of the distance.

Abstract: A system for determining precise position includes a chirp receiver that processes broadcast chirp signals in the frequency domain to distinguish direct path signals from multipath signals. The chirp receiver processes the received chirp signals, which consist of respective pulsed frequency sweeps, by combining a received chirp signal with a synchronized locally generated chirp signal and phase adjusting and concatenating the results over multiple sweeps, based on estimated clock phase errors and expected phase rotations of the direct path signals, to produce a sine wave. The phase adjustment and concatenation allows the use of longer Fast Fourier Transforms (FFTs) that, in turn, provide increased accuracy of frequency estimation and separate component signals that are very close in frequency.

Abstract: Providing indoor location, position, or tracking of a mobile computer using combined sensor data and network related information is disclosed. Outdoor location, indoor location, and determined motion information may be combined to track the mobile computer indoors.

Abstract: Disclosed is a signal receiving apparatus including: a receiver configured to comprise a plurality of terminals to receive different plural satellite signals; a storage portion configured to store characteristic information therein corresponding to the plurality of satellite signals; and a controller configured to determine which of the plurality of satellite signals is received by the plurality of terminals, based on the characteristic information, and configured to control the receiver to tune the plurality of satellite signals received by the plurality of terminals, according to the determination result.