Abstract: In one embodiment, a method includes processing user interactions with an electronic device based on different processing modules. The electronic device includes one or more radar-based transmitters and receivers. The method transmits radio waves into an area in the vicinity of the electronic device from the transmitters and receives at the receivers the radio waves reflected off one or more objects in the vicinity of the electronic device. The method selects either trilateration processing or imaging process to process the received radio waves based on different requirements for processing user interactions.

Abstract: Systems and techniques are provided for tracking subjects in an area of real space. The system receives a plurality of sequences of images of corresponding fields of view in the real space. The system uses the sequences of images to locate subjects in the area of real space during identification intervals. The system compares a current set of located subjects from a current identification interval with previous sets of located subjects from a plurality of previous identification intervals to track locations of tracked subjects in the area.

Abstract: A radar level gauge comprising transceiver circuitry, a propagation device and processing circuitry for determining a value of the process variable based on a relationship between a transmit signal and a return signal. The gauge has a DC/DC converter connected to a power supply interface, and configured to convert a first voltage to a second voltage, lower than the first voltage, and an energy storage. The gauge further has a switch, connected between the DC/DC converter and the energy storage, the switch having a non-conducting state for disconnecting the energy storage from the DC/DC converter when the transceiver circuitry is active, and a conducting state for connecting the energy storage to the DC/DC converter only when the transceiver circuitry is inactive.

Abstract: Examples relating to vehicle velocity calculation using radar technology are described. An example method performed by a computing system may involve, while a vehicle is moving on a road, receiving, from two or more radar sensors mounted at different locations on the vehicle, radar data representative of an environment of the vehicle. The method may involve, based on the data, detecting at least one scatterer in the environment. The method may involve making a determination of a likelihood that the at least one scatterer is stationary with respect to the vehicle. The method may involve, based on the determination being that the likelihood is at least equal to a predefined confidence threshold, calculating a velocity of the vehicle based on the data from the sensors. The calculated velocity may include an angular and linear velocity. Further, the method may involve controlling the vehicle based on the calculated velocity.

Abstract: The present invention discloses a circuit substrate, including a first signal end, a second signal end, a first circular capacitor structure, and a second circular capacitor structure. The first circular capacitor structure is electrically connected to the first signal end. The second circular capacitor structure is electrically connected to the second signal end. The first circular capacitor structure and the second circular capacitor structure are located in different planes of the circuit substrate.

Abstract: Methods and systems for a precision Doppler-based airborne platform velocity measurement system are presently disclosed. An example method comprises transmitting a radar signal with an antenna of an airborne platform. The method also includes receiving at least one radar reflection with the antenna. As part of the method, one or more processors may be configured to determine (i) a falling edge of a Doppler signature of the received radar reflection and (ii) a signal representative of an airspeed based on the falling edge of the Doppler signature. Additionally, the method includes providing the determined signal to an inertial measurement system. Further, the method includes determining location parameters of the airborne platform by the inertial measurement system, including determining at least one sensor adjustment for the inertial measurement unit based on the determined signal. Finally, the method includes operating the inertial measurement system with the sensor adjustment.

Abstract: A method and system to obtain a velocity measurement of a target detected by a radar system using an asymmetric Doppler spectrum includes a receive portion of the radar system to receive a reflected signal from the target. A mixer mixes the reflected signal with a shifted signal to obtain a mixed signal. The shifted signal is a shifted version of a transmitted signal that results in the reflected signal and the Doppler spectrum is defined by a frequency shift value of the shifted signal. A processor processes the mixed signal to obtain the velocity measurement.

Abstract: Disclosed is a method and a system for the automated computation of a length or width dimension of a moving platform. The method includes sending radio waves toward the platform along a predetermined transmission axis and acquiring at least one digital power profile signal representative of a received reflected signal power as a function of a radial distance along the transmission axis relative to a reference point. This method next includes applying a filtering operator on the acquired digital power profile signal, making it possible to obtain a filtered digital signal, determining, by computation, a first radial distance corresponding to a first variation peak of the filtered digital signal and a second radial distance corresponding to a second variation peak of the filtered digital signal, and the computing a radial dimension of the platform as a function of the first and second radial distances.

Abstract: The various embodiments herein provide a moving vehicle speed detection system for recording the speed violation. The system comprises third generation photo radar for determining an accurate speed of the moving vehicles by measuring a speed and also by measuring the speed with the help of an image processor. The speed of one or more vehicles moving in different lanes within the detection range of the system is accurately measured. The system has a traffic counter system and it can determine an average speed with a very high precision. Generally this system provides the operator with various directorial data and graphs which facilitates an intelligent management of traffic speed control. Also it can determine the accurate speed of any number of vehicles within the range of the system by a third generation photo radar system.

Abstract: In some examples, a ground obstacle detection system of an aircraft is configured to generate and display a graphical user interface (GUI) that includes a graphical representation of a detected obstacle with which the aircraft may collide during a ground operation and an indication of an area of unknown associated with the detected obstacle. Instead of, in addition to, a GUI that includes an indication of an area of unknown associated with an obstacle, in some examples, a ground obstacle detection system to generate a GUI that includes at least two windows that present different views of an aircraft. At least one of the windows may include a graphical representation of an obstacle that may not be visible in the view of another window.

Abstract: An antenna apparatus for a fill level measurement device including an antenna unit that is rotatably mounted and comprises an array made up of a plurality of radiator elements. The radiator elements are arranged in a plane which, together with the axis of rotation of the antenna unit, forms an angle ? that does not equal 90 degrees.

Abstract: An on-board radar apparatus includes a transmitter/receiver that transmits a radar signal to a detection range for every frame and receives one or more reflected signals which are the radar signal reflected by one or more objects; a detector that detects, for every frame in each direction within the detection range, a position of a reflection point closest to the on-board radar apparatus as a boundary candidate position, which serves as a boundary with a region where no object exists within the detection range, among one or more reflection points detected on the basis of the one or more reflected signals; a calculator that calculates movement amount concerning an amount of movement of the on-board radar apparatus; an estimator that generates, for every frame in each direction within the detection range, an estimated boundary position by converting the boundary candidate position detected in a past frame into a boundary position in a current frame on the basis of the movement amount; and a smoother that perfor

Abstract: Example methods, apparatuses, and/or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate and/or support one or more operations and/or techniques for enhancing searches for positioning reference signals (PRS) via one or more runtime conditions, such as for use in or with mobile communication devices, for example.

Abstract: Pedestrian-Vehicle safety systems for loading docks are disclosed herein. An example method disclosed herein includes sensing whether a person is within a certain area adjacent a dock face of a loading dock, emitting a first signal in response to sensing the person being present within the certain area, sensing rearward movement of a vehicle toward the dock face, emitting a second signal in response to sensing rearward movement of the vehicle while the person is not present in the certain area, and emitting a third signal in response to sensing both the rearward movement of the vehicle and the person being present within the certain area.

Abstract: A motion detector includes a microwave-based module to detect movement. Intermediate processing circuitry is coupled to an output from the module. The processing circuitry is activated intermittently to produce first and second pulsed output signals. Cross-correlation circuitry processes the two signals to produce a motion indicating output signal.

Abstract: A system and method for selectively reducing or filtering data provided by one or more vehicle mounted sensors before using that data to detect, track and/or estimate a stationary object located along the side of a road, such as a guardrail or barrier. According to one example, the method reduces the amount of data by consolidating, classifying and pre-sorting data points from several forward looking radar sensors before using those data points to determine if a stationary roadside object is present. If the method determines that a stationary roadside object is present, then the reduced or filtered data points can be applied to a data fitting algorithm in order to estimate the size, shape and/or other parameters of the object. In one example, the output of the present method is provided to automated or autonomous driving systems.

Abstract: An automatic frequency control is used to keep a continuous wave (CW) transmission tuned to the resonant frequency of a resonant microwave patch antenna (RMPA). Changes in loading and the bulk dielectric constant of the mixed media in front of the RMPA will affect its resonant frequency and input impedance. A significant shift in the measured input impedance is interpreted as an object moving nearby, and the phase angle of the measured input impedance is used to estimate the direction of an object's movement.

Abstract: A projectile detection system, and method of detecting a projectile (for example a bullet), for use on a vehicle (100) (for example a helicopter), the projectile detection system comprising: a radar antenna array (4) arranged to transmit and receive microwave signals so as to provide a plurality of detection segments (40, 42, 44, 46) of a volume of airspace (38); one or more processors (3) arranged to: determine which segments (40, 42, 44, 46) microwave signals reflected by a projectile (10) are received from; determine timing information relating to a time order in which the received microwave signals are received; and determine directional information relating to a direction of travel of the projectile (10) using the determined segments (40, 42, 44, 46) and the determined timing information; wherein the microwave signals have a frequency between 1 GHz and 30 GHz.

Abstract: In a method of determining a deviation of a path of a projectile from a predetermined path, the method uses an image of a target area in which the desired path or direction is pointed out. Subsequently, the real direction or real path is determined and the deviation is determined.

Abstract: In exemplary implementations of this invention, a radio signal is transmitted between a transmitter and a receiver. Either the transmitter, or receiver, or both, have a directional antenna. When organic tissue passes between (or is stationary between) the transmitter and receiver, the tissue causes a reduction of the received signal strength (RSS) of the signal, as compared to a baseline RSS. The larger the amount of tissue, the greater is the reduction of the RSS. By analyzing the degradation of the signal, information about organic tissue between the transmitter and receiver may be determined. For example, the number of persons passing through a physical threshold may be determined. Or the fact that one person is walking faster than, and catching up with, a second person as they pass between the transmitter and receiver may be determined.

Abstract: A driving assist apparatus for a vehicle is disclosed. The driving assist apparatus includes a transmitter for transmitting a transmission wave, a receiver for receiving a reflected wave, an obstacle presence determination section for detecting a presence of an obstacle in the surrounding of the vehicle based on the reflected wave, a measurement section for measuring a frequency of phase delay and advance of the reflected wave with respect to a reference signal, and a detection section for detecting the obstacle having a specific relation with the vehicle based on the presence of the obstacle determined by the obstacle presence determination section and the frequency of delay and the frequency of advance measured by the measurement section.

Abstract: System and method for calculating three dimensional residual motion errors of a moving platform with respect to a point of interest by receiving a radar signal from the point of interest (302); forming a radar image including a plurality of scatterers (304); using an MLE method to obtain range, radial velocity and acceleration of the moving platform for a first peak scatterer in the radar image (306); correcting a location of the first peak scatterer with respect to a scene center of the point of interest (312); updating the obtained radial acceleration responsive to the corrected location (314); and updating the obtained radial velocity of the moving platform responsive to the updated radial acceleration (316).

Abstract: In a multibeam radar sensor apparatus having at least two transmission/reception channels, whose signal paths each include an antenna and a mixer, at least one first mixer is configured bidirectionally as a transfer mixer, and at least one second mixer is switchable from a first into a second operating state; in the first operating state, the mixer is bidirectionally configured as a transfer mixer, and in the second operating state, the mixer being configured in an at least approximately isolating manner as a receiving mixer.

Abstract: In certain embodiments, an apparatus comprises range matched filters and a Doppler-acceleration matched filter system. The matched filters are configured to receive radar return signals detected by an antenna and range match filter the radar return signals to place the radar return signals into range cells. The Doppler-acceleration matched filter system is configured to Doppler-acceleration process the radar return signals in the range cells to facilitate identification of one or more targets.

Abstract: A method and system for cancelling body movement effect for non-contact vital sign detection is described. The method begins with sending on a first electromagnetic wave transceiver a first electromagnetic signal with a first frequency to a first side of a body, such as a person or animal. Simultaneously using a second electromagnetic wave transceiver a second electromagnetic signal is sent with a second frequency to a second side of a body, wherein the first frequency and the second frequency are different frequencies. A first reflected electromagnetic signal reflected back in response to the first electromagnetic wave on the first transceiver is received and a first baseband complex signal is extracted. Likewise a second reflected electromagnetic signal reflected back in response to the second electromagnetic wave on the second transceiver is received and a second baseband complex signal is extracted.

Abstract: An object detecting device and an object detecting method capable of performing appropriate object detection that distinguishes an approaching moving object from a stationary object accurately. The relative velocity of an object, which exists in the lateral direction of a vehicle, with respect to the vehicle is detected, the absolute velocity of the object in the horizontal direction of the vehicle is calculated on the basis of the detection signal, and it is determined whether or not the object is an approaching moving object on the basis of the absolute velocity of the object in the horizontal direction of the vehicle. Accordingly, since it is possible to accurately distinguish whether an object existing in the lateral or oblique direction of the vehicle is an approaching moving object or a stationary object, it is possible to appropriately determine whether or not the object is an approaching moving object.

Abstract: An object detection device for a vehicle includes a transmission and reception unit that transmits an electromagnetic wave and receives a reflected wave, a reflecting point computation unit that computes a position of a reflecting point of the electromagnetic wave on the object, a distance computation unit that computes a distance from the subject vehicle to the object, an end point detection unit that detects at least one of an end point on the right side of the object and an end point on the left side thereof, a shielding determination unit that determines whether the end point of the object is shielded by another object when viewed from the subject vehicle, and an end point movement speed computation unit that computes a lateral movement speed of the end point of the object determined as not being shielded.

Abstract: A system for determining the movement of a swaying structure, on which a receiver is fixedly mounted, is proposed, wherein at least three reference transmitters having known and fixed positions are provided and transmit the transmission signals received by the receiver at defined carrier frequencies. In addition, an evaluation unit is provided, which determines measured phase values from the received signals, taking into account the defined carrier frequency, wherein the distance from the reference transmitters and the changes in position of the receiver and therefore of the swaying structure can be calculated from said phase values.

Abstract: A homodyne motion sensor or detector based on ultra-wideband radar utilizes the entire received waveform through implementation of a voltage boosting receiver. The receiver includes a receiver input and a receiver output. A first diode is connected to the receiver output. A first charge storage capacitor is connected from between the first diode and the receiver output to ground. A second charge storage capacitor is connected between the receiver input and the first diode. A second diode is connected from between the second charge storage capacitor and the first diode to ground. The dual diode receiver performs voltage boosting of a RF signal received at the receiver input, thereby enhancing receiver sensitivity.

Abstract: A method and apparatus are provided for automatically testing microwave instruction detection modules of a security system. The method includes the steps of detecting intruders within a protected space by monitoring a Doppler output of a signal extraction circuit coupled to a microwave transceiver module, varying a frequency of direct current power pulses applied to the microwave transceiver module, detecting a difference in magnitude of the Doppler output of the signal extraction circuit over the varied frequency and comparing the detected difference with a fault threshold level.

Abstract: This disclosure provides an image processing device, which includes a relative trail image memory for storing a relative trail data group indicating relative changes in position of a target object detected by echo signals obtained corresponding to detection signals transmitted while changing a transmitting azimuth direction, with respect to a transmitting position from which the detection signals are transmitted, and an approaching target object determination processing module for determining whether the target object detected with the detection signals is an approaching target object that approaches the transmitting position based on relative trail data existing on the same sweep line among the relative trail data group stored in the relative trail image memory.

Abstract: This disclosure describes a radar system that in certain embodiments can, among other features, take into account the phase noise and/or drift of a transmit signal when generating a nulling signal. A receiver of the radar system can produce an IF signal by mixing a received signal with a local oscillator. The receiver can also mix the local oscillator with a transmit signal provided directly by the transmitter to the receiver to produce a control signal. Using the control signal to generate a nulling signal, the receiver can maintain or substantially maintain phase coherence between the nulling signal and the transmit signal. As a result, in certain embodiments, more precise nulling can occur, resulting in greater receiver sensitivity. Improved receiver sensitivity can provide a greater maximum detectable range and/or improved target detection.

Abstract: In accordance with a particular embodiment of the invention, a kinematic indicator generator may receive tracking data describing the position and velocity of a target. The tracking data may be used to identify an event describing an action of the target that may have occurred. The probability that the event occurred may be calculated and indicated by a confidence. The kinematic indicator generator may generate a kinematic indicator that includes the event and the confidence.

Abstract: A radar-based physiological motion sensor is disclosed. Doppler-shifted signals can be extracted from the signals received by the sensor. The Doppler-shifted signals can be digitized and processed subsequently to extract information related to the cardiopulmonary motion in one or more subjects. The information can include respiratory rates, heart rates, waveforms due to respiratory and cardiac activity, direction of arrival, abnormal or paradoxical breathing, etc. In various embodiments, the extracted information can be displayed on a display.

Abstract: The radar apparatus includes a target candidate detecting means for detecting a peak frequency at which the intensity of the power spectrum of a beat signal peaks as a target candidate, a road shape recognizing means to sequentially connect, along a predetermined direction, the target candidates detected to be stationary and present within a reference distance from one of the target candidates set as a reference target candidate for one or more measurement cycles and recognize an area formed by the sequentially connected target candidates as an edge of the road, a cruise environment estimating means to determine whether the cruise environment is a closed space or an open space based on the power spectrum, and a reference distance correcting means to shorten the reference distance when the cruise environment is determined to be a closed space.

Abstract: A vehicular traffic surveillance Doppler radar system and method for use of the same are disclosed. In one embodiment, the system comprises a modulation circuit portion for generating modulated FM signals. An antenna circuit portion transmits the modulated FM signals to a target and receives the reflected modulated FM signals therefrom. A ranging circuit portion performs a quadrature demodulation on the reflected modulated FM signals and determines a range measurement based upon phase angle measurements derived therefrom.

Abstract: A wireless sensor device includes a transmission signal generation unit that generates a frequency-spread high frequency transmission signal such that a transmission frequency is continuously increased and decreased with a predetermined period, a transmitter antenna that radiates the high frequency transmission signal, a receiver antenna that receives a reflected wave from an object having received the high frequency transmission signal, and outputs a frequency-spread high frequency reception signal, a mixer circuit that receives a part of the high frequency transmission signal as a first frequency-spread high frequency signal, receives the high frequency reception signal as a second frequency-spread high frequency signal, and outputs a DC beat signal by operating as a phase detector when frequencies of the first and second signals coincide with each other, and a DC component extraction circuit that extracts the DC beat signal from an output signal of the mixer circuit.

Abstract: A method of detecting motion in a load bearing member on a machine. The method includes positioning a Doppler radar detector on the machine and orienting the Doppler radar detector such that the Doppler radar detector floods the load bearing member transmitted radio frequency signals. The method further includes receiving reflected radio frequency signals from the load bearing member with an antenna and generating intermediate frequency signals based on differences between the transmitted radio frequency signals and the reflected radio frequency signals. The method further includes measuring the intermediate frequency signals.

Abstract: A method of classifying items from reflected signals returned from said items is disclosed, the method comprising: processing said return signals to discriminate between a first set of signals indicative of items of interest and a further set of signals indicative of clutter; identifying items from said first set of signals and classifying them as a first class of item; processing said further set of signals to identify a second set of signals indicative of further items of interest; identifying items from said second set of signals and classifying them as a second class of item.

Abstract: A non-contact motion sensor comprising a radar detector that includes a first antenna, a second antenna that is orthogonal to the first antenna and a third antenna that is orthogonal to the first antenna and the second antenna. The non-contact motion sensor further includes a control that collects and analyzes signals that are received from the radar detector.

Abstract: A method including loading a data file into a memory of a mobile computing device, displaying a portion of the data file on a display of the mobile computing device, detecting user motion data corresponding to a motion of the mobile computing device by a user, the motion being indicative of the user's desire to view a further portion of the data file, and displaying the further portion of the data file on the display as a function of the user motion data.

Abstract: A system includes a pulsed UHF radar for integrating the signal received over a given integration time. The integration time for the received signal and the size of the distance bin are defined in such a way that, taking into account the range of speeds of the targets of interest, a moving target of interest travels only a distance shorter than the size of the distance bin from one integration period to another. Furthermore, the UHF radar implements a method of forming radar blips from the received signal to form elementary blips from the signals received over the chosen integration time and to store them from one burst to another. The method also confirms that the elementary blips formed probably correspond to targets of interest and then forms, from the confirmed elementary blips, aggregate blips, the attributes of an aggregate blip depending on the attributes of the confirmed elementary blips from which the aggregate blip stems.

Abstract: A vehicular traffic surveillance Doppler radar system and method for use of the same are disclosed. In one embodiment, the system comprises a modulation circuit portion for generating modulated FM signals. An antenna circuit portion transmits the modulated FM signals to a target and receives the reflected modulated FM signals therefrom. A ranging circuit portion performs a quadrature demodulation on the reflected modulated FM signals and determines a range measurement based upon phase angle measurements derived therefrom.

Abstract: A system and method for classifying the user's morphology, and using that classification to control the UE in order to provide more efficient operation of the UE. The classification may be used to assist the user in determining its location more efficiently, without needless interruption or unnecessary use of system resources. The morphology classifier may classify the user's morphology into at least one of the following classifications: indoor, outdoor, local coverage, no local coverage, proximate to a base station, stationary, moving, urban, suburban, rural, deep indoor, mid indoor, and indoor near window. The classification may be used by the UE or by a remote server that utilizes the classification to develop assistance data that is sent to the UE.

Abstract: The invention relates to a radar device having a housing that includes: a microwave motion detection module (3) generating a Doppler signal, a signal processor (5) for calculating a speed from said Doppler signal, processing means (1) for switching the module and the signal processor from a detection mode to a speed-measuring mode and vice versa, a wireless interface (8) for transmitting said speed to a remote device, and a self-contained power supply (9) for powering the device.

Abstract: In a CW radar system for detecting motion behind a wall involving modulation of the radar transmission, means are provided to interrupt the CW wave when motion is detected and to use the same radar transmitter to transmit a serial digital message to a remote monitoring receiver. The encoding can include a receiver wakeup message to turn on the receiver only when motion has been detected. In one embodiment, a microprocessor is used to detect when motion exists behind a wall and to provide a tailorable message to modulate the radar's transmitter in the period when the CW signal from the radar is turned off after motion detection.

Abstract: A method for determining at least one of the distance to and the speed of an object is discussed. The method comprises determining an indication of whether the object is approaching or moving away and generating an interrogation signal comprising a sequence consisting of segments at constant frequency and segments of varying frequency, wherein if the determining step indicates the object is approaching then the varying frequency segments have decreasing frequency and if the determining step indicates that the object is moving away then the varying frequency segments have increasing frequency. The interrogation signal is transmitted and a version of the interrogation signal reflected from the object is detected. At least one of the distance to and speed of the object is then determined using a combination of the interrogation signal and the reflected version of the interrogation signal.

Abstract: An FMCW radar has a variable frequency microwave signal source for outputting a microwave signal, a frequency divider, a phase-locked loop, a loop filter and a reference signal source. The frequency divider is connected between the output of the variable frequency microwave signal source and an input of the phase-locked loop. The loop filter is connected between the output of the phase-locked loop and the input of the variable frequency microwave signal source. The reference signal source is connected to an additional input of the phase-locked loop. The frequency divider is adjustable, in particular digitally adjustable. A method for operating an FMWC radar includes adjusting a variable frequency microwave signal source by way of a closed-loop control circuit which uses a reference signal of a reference signal source, especially of a quartz oscillator, as the reference value, and a frequency-divided output signal of the microwave signal source as the feedback value.

Abstract: A vehicular traffic surveillance Doppler radar system and method for use of the same are disclosed. In one embodiment, the system comprises a modulation circuit portion for generating modulated FM signals. An antenna circuit portion transmits the modulated FM signals to a target and receives the reflected modulated FM signals therefrom. A ranging circuit portion performs a quadrature demodulation on the reflected modulated FM signals and determines a range measurement based upon phase angle measurements derived therefrom.

Abstract: A signal processing circuit detects, at a plurality of different timing points, a first and a second distance of an oncoming vehicle approaching a vehicle including the radar apparatus and detects a first and a second component of a relative velocity of the vehicle in the radar-apparatus direction. A distance of closest approach of the oncoming vehicle to the vehicle appears when the vehicle and the oncoming vehicle pass each other side by side. The signal processing circuit computes the distance of closest approach on the basis of a formula indicating that a relative velocity given by the first distance, the distance of closest approach, and the first component of a relative velocity in the radar-apparatus direction is equal to a relative velocity given by the second distance, the distance of closest approach, and the second component of a relative velocity in the radar-apparatus direction.