Abstract: Systems and methods involve detecting objects using a radar system of a vehicle. Tracks of the objects are initiated in a track database. The tracks store data, respectively, for the objects and are updated based on additional detections of the objects. The tracks of the objects are initially unclassified tracks. Two tracks corresponding to two of the objects are selected as a candidate pair. Criteria are applied to the candidate pair to determine whether one track is of a ghost object and another track is of a true object corresponding with the ghost object. The ghost object represents detection of the true object in an incorrect location. The candidate pair is classified as tracks of a true object and ghost object pair based on determining that the one track is of the ghost object and the other track is of the true object corresponding with the ghost object.

Abstract: System and method of controlling operation of an optical sensor in a device. The optical sensor is configured to employ a scan pattern to scan respective portions of a full field of view. A navigation sensor is configured to obtain location coordinates of the device. An inertial sensor is configured to obtain an acceleration data of the device in a plurality of directions. A controller is configured to determine a position of the device at the present time based in part on the location coordinates and the acceleration data. The controller is configured to determine a sun striking zone based in part on a relative position of the sun and the device. When a sun overlap region between the respective portions of the full field of view and sun striking zone exceeds a first overlap threshold, operation of the optical sensor is modified.

Abstract: A scanning and perception system for a vehicle camera having an instantaneous field of view (iFOV) and configured to capture an image of an object at a saturation level in the camera's iFOV. The system also includes a light source configured to illuminate the camera's iFOV. The system additionally includes a radar configured to determine the object's velocity and the object's distance from the vehicle, and a mechanism configured to steer the radar and/or the camera. The system also includes an electronic controller programmed to regulate the mechanism and adjust illumination intensity of the light source in response to the saturation level in the image or the determined distance to the object. The controller is also programmed to merge data indicative of the captured image and data indicative of the determined position of the object and classify the object and identify the object's position in response to the merged data.

Abstract: Methods and systems involve generating a family of codewords. Each codeword of the family of codewords including three segments with one of the three segments being a hyperbolic frequency modulation (HFM) segment and two of the three segments being linear frequency modulation (LFM) segments. A method includes transmitting each codeword of the family of codewords using a different transmit antenna element.

Abstract: A vehicle, radar system for the vehicle and method for detecting an object. The radar system includes a transmitter for transmitting a source signal and a receiver for receiving a reflection of the source signal from an object. A processor obtains a radar parameter of the object from the received reflection, adjusts an operating parameter of the radar based on the radar parameter to provide an altered source signal, and detects the object based on a reflection of the altered source signal.

Abstract: A radar system may include a transmitter, a receiver, and a controller. The controller may calculate a received beam response spectrum based on the received reflected radar signal, detect a first maximum value of the received beam response spectrum, identify an angle corresponding to the first maximum value as a first target angle, obtain a threshold envelope based on the first maximum value and the first target angle, detect a second maximum value in a portion of the received beam response spectrum being greater than the threshold envelope, identify an angle corresponding to the second maximum value as a second target angle, and output the first target angle as the angle of arrival of the reflected radar signal from the first target and the second target angle as the angle of arrival of the reflected radar signal from the second target.

Abstract: A method and system include transmitting transmit signals from a radar system. The transmit signals are linear frequency modulated continuous wave signals. The method includes receiving reflected signals at the radar system based on reflection of at least at subset of the transmit signals by one or more objects. A range from the radar system associated with each of the reflected signals corresponds with a frequency of the reflected signal. The reflected signals are processed to identify and locate the one or more objects. Processing includes applying an adaptive range-selective gain control (ARSGC) to control a gain corresponding with each of the reflected signals based on the range associated with the reflected signal.

Abstract: A radar system for use in a vehicle may include a radar transmitter structured to transmit a radar signal having a waveform; and a controller operably connected to the radar transmitter and configured to control the waveform. The waveform may be characterized by a waveform parameter. The controller may be configured to set a value of the waveform parameter based on a present operational state of the vehicle, thereby generating an updated waveform. The radar transmitter may be structured to transmit an updated radar signal having the updated waveform.

Abstract: A hyperbolic waveform multiple-input multiple-output radar includes a generator circuit, multiple transmit circuits, a multiple-input multiple-output antenna, and multiple receive circuits. The generator circuit may be operable to generate a linear frequency modulated signal and a hyperbolic frequency modulated signal. The transmit circuits may be operable to generate multiple transmit signals by analog mixing the linear frequency modulated signal and the hyperbolic frequency modulated signal in response to a plurality of coding family parameters, wherein the transmit signals define an orthogonal family of waveforms. The multiple-input multiple-output antenna may be operable to transmit the transmit signals toward an object and receive multiple receive signals from the object. The receive circuits may be operable to determine multiple data signals in response to the receive signals, wherein the data signals are suitable to determine a distance between the multiple-input multiple-output antenna and the object.

Abstract: A radar circuit for use with a host system such as a vehicle includes a radio frequency (RF) signal generator configured to generate a predetermined RF waveform, an RF antenna connected to the RF signal generator, and an ECU which executes a method. As part of such a method, a signal generator transmits the RF waveform toward different radar target types, and receives return signatures reflected therefrom. The ECU receives the return signatures from the antenna, processes the return signatures via parallel constant false-alarm rate (CFAR) subdetectors each with defined cells under test to detect the target types as a set of detection events, merges the detection events into a merged set, and executes a control action aboard the host system responsive to the merged set. Each subdetector detects a corresponding one or more of the radar target types via corresponding detection parameters.

Abstract: A vehicle, radar system of a vehicle and method of extending a range of the radar system. The radar system includes a transmitter antenna, a receiver antenna and a processor. The transmitter antenna transmits a reference signal. The receiver antenna receives an echo signal in response to reflection of the reference signal from an object located at a distance outside of the range limit of the radar system, wherein the range limit indicating a frequency sampling range. The processor generates a frequency peak for the object from the received echo signal, wherein the frequency peak lies outside of the frequency sampling range, shifts the frequency peak to within the frequency sampling range, and determines a range of the object using the frequency-shifted peak.

Abstract: A vehicle, system for navigating the vehicle and method of operating the vehicle. The system includes a radar system and a processor. The radar system transmits a linear frequency modulated signal into an environment of the vehicle and receives a reflection of the linear frequency modulated signal from an object in the environment. The processor partitions the reflection into a plurality of streams to obtain a Doppler frequency that exceeds a maximum Doppler frequency of the radar.

Abstract: A vehicle, radar system for the vehicle and method of operating the vehicle is disclosed. The radar system includes a transmitter, a receiver and a processor. The transmitter transmits a source signal into a region proximate the vehicle. The receiver receives a reflected signal formed by reflection of the source signal from an object in the region. The processor obtains non-linear terms of a phase from the reflected signal and resolves a Doppler ambiguity of the object using the non-linear terms. A navigation system navigates the vehicle with respect to the object based on the resolved Doppler ambiguity.

Abstract: System and method of controlling operation of a device in real-time. The system includes an optical sensor having a steerable optical field of view for obtaining image data and a radar unit having a steerable radar field of view for obtaining radar data. A controller may be configured to steer a first one of the optical sensor and the radar unit to a first region of interest and a second one of the optical sensor and the radar unit to the second region of interest. The controller may be configured to steer both the optical sensor and the radar unit to the first region of interest. The radar data and the image data are fused to obtain a target location and a target velocity. The controller is configured to control operation of the device based in part on at least one of the target location and the target velocity.

Abstract: A system and method to generate a family of orthogonal signals for a code division multiple access (CDMA) radar system involve selecting a first signal of the family of orthogonal signals for transmission by one of a plurality of transmitters of the radar system. The method includes using an algorithm to determine a second signal of the family of orthogonal signals. The algorithm uses cross-correlation values between candidate signals for consideration as the second signal of the family of orthogonal signals and the first signal. The method also includes transmitting the first signal of the family of orthogonal signals and the second signal of the family of orthogonal signals simultaneously from two different transmitters, and obtaining and processing reflections resulting from transmission of the first signal of the family of orthogonal signals and the second signal of the family of orthogonal signals.

Abstract: A radar system includes one or more antennas to emit transmit signals and receive reflected signals resulting from reflection of the transmit signals by an object. The transmit signals are linear frequency modulated continuous wave (LFMCW) signals. The radar system also includes a transmission generator to generate the transmit signals. The transmission generator includes a controller to control output of a first of the transmit signals and a second of the transmit signals in succession. A time between transmission of the first of the transmit signals and the second of the transmit signals is less than a duration of a stabilization period of a first oscillator used to generate the first of the transmit signals.

Abstract: Systems and methods involve detecting objects using a radar system of a vehicle. Tracks of the objects are initiated in a track database. The tracks store data, respectively, for the objects and are updated based on additional detections of the objects. The tracks of the objects are initially unclassified tracks. Two tracks corresponding to two of the objects are selected as a candidate pair. Criteria are applied to the candidate pair to determine whether one track is of a ghost object and another track is of a true object corresponding with the ghost object. The ghost object represents detection of the true object in an incorrect location. The candidate pair is classified as tracks of a true object and ghost object pair based on determining that the one track is of the ghost object and the other track is of the true object corresponding with the ghost object.

Abstract: A vehicle, radar system for a vehicle, and method of determining a radial velocity of an object via the radar system. The radar system includes a transmitter, receiver and processor. The transmitter transmits a source signal towards an object, and the receiver for receives a reflection of the source signal from the object. The processor obtains a Doppler measurement related to a radial velocity of the object, wherein the Doppler measurement includes a Doppler ambiguity, obtains a range walk rate for the radial velocity of the object, and resolves the Doppler ambiguity of the Doppler measurement using the range walk rate to obtain the radial velocity of the object.

Abstract: Methods and systems involve generating a family of codewords. Each codeword of the family of codewords including three segments with one of the three segments being a hyperbolic frequency modulation (HFM) segment and two of the three segments being linear frequency modulation (LFM) segments. A method includes transmitting each codeword of the family of codewords using a different transmit antenna element.

Abstract: A device for imaging a region of interest includes a scanning assembly configured to steer a light beam incident thereon relative to a target location. The scanning assembly includes a first stationary optical device configured to control a circular polarization direction of the light beam and transmit the light beam to a second stationary optical device, and the second stationary optical device is configured to deflect the light beam to the target location. The device also includes an image sensor configured to generate an image based on the deflected light beam.