Abstract: Signal processing circuitry includes at least one processor configured to obtain a digitized radar signal, and further configured, for one or more iterations, to: determine a first power of at least one first signal sample of the radar signal; determine a second power of at least one second signal sample of the radar signal, the at least one second signal sample being subsequent in time to the at least one first signal sample; and determine a difference value between the second power and the first power. The at least one processor further configured to detecting a burst interference signal occurring within the radar signal based on the one or more difference values from the one or more iterations.

Abstract: Radar systems and methods for imaging surfaces. A processor receives raw data from the radar and executes an image data generation. A display unit displays an image representing the targeted surface. The radar unit may be incorporated in a handheld scanner. Rectangular antenna arrays may be configured and processors may be operable such that the image data generated may be processed and displayed in real time.

Abstract: A mobile terminal includes: a UWB chip, configured to output UWB pulse signals of a first preset quantity in a signal cycle and further configured to generate a frame of detection data on the basis of echo signals of signal cycles of a second preset quantity; a switchover module, configured to control an antenna module to be switched to a target antenna, in which the target antenna includes a first target antenna configured to radiate the UWB pulse signals into space and a second target antenna configured to receive echo signals; and a processor, configured to recognize a gesture on the basis of at least one frame of detection data.

Abstract: A microservice node can receive a request for information identifying a corrected physical location of a client device. The request can include raw satellite data associated with the client device. The microservice node can convert the raw satellite data to a Radio Technical Commission for Maritime Services (RTCM) format. The microservice node can determine, based on converting the raw satellite data to the RTCM format, an estimated physical location of the client device. The microservice node can receive, based on transmitting a request to a network real-time kinematics (RTK) device, corrections data associated with the estimated physical location of the client device. The microservice node can determine, using a cloud RTK engine, the corrected physical location of the client device based on the estimated physical location and corrections data. The microservice node can transmit, to the client device, the information identifying the corrected physical location of the client device.

Abstract: A method for detecting a moving target through a vehicle radar system includes acquiring radar data from a radar sensor disposed with respect to a vehicle, and using the radar data to detect a plane of a structure. The method also includes setting a reference classification line based on the detected plane, and determining whether the moving target is in a line of sight (LOS) area or a non-line of sight (NLOS) area based on the reference classification line.

Abstract: A radar sensing system is for being disposed on a vehicle. The radar sensing system includes a sensing unit and a housing. The sensing unit includes a receiving antenna array, which includes at least four receiving antennas. The receiving antennas are arranged on an antenna plane and have a receiving antenna center. A distance between the receiving antenna center and a ground plane is greater than 40 cm. The receiving antennas are arranged asymmetrically with respect to the receiving antenna center. The housing includes a bottom surface, which is attached on an outer surface of the vehicle. The sensing unit is disposed in the housing. An antenna plane angle between the antenna plane and the outer surface of the vehicle is in a range of 0 degrees to 90 degrees.

Abstract: Provided herein is a system and method to determine a three-dimensional heading of a target. The system includes a radar sensor that obtains a three-dimensional snapshot of radar data comprising Doppler velocities and spatial positions of a plurality of detection points of a target, one or more processors, and a memory storing instructions that, when executed by the one or more processors, causes the system to perform conducting a first estimation of a three-dimensional heading of the target based on the spatial positions; conducting a second estimation of the three-dimensional heading of the target based on the Doppler velocities; and obtaining a combined estimation of the three-dimensional heading of the target based on a weighted sum of the first estimation and the second estimation.

Abstract: An event-driven transmission method comprises converting at least one event to at least one corresponding pulse pair and transmitting the at least one pulse pair. In this context, a delay between each pulse pair represents a corresponding identifier with respect to the respective event or with respect to at least one corresponding object causing or experiencing the respective event.

Abstract: An electronic device, a method, and a computer program product facilitate device labeling of devices that are ultra-wideband (UWB) capable. A controller of the electronic device identifies, via a wireless transceiver, proximity to device(s) including a first device that are UWB capable. The controller receives, via a UWB transceiver, UWB signals from a first device. The controller determines a location of the first device based on a range and an angle of arrival of the UWB signals. The controller receives an image stream from an image capturing device. The controller visually classifies an object corresponding to the first device in the image stream using a library of classification images that includes one or more classification images of one or more devices. The controller identifies an object classification associated with a device label for the first device. The controller assigns the device label to the first device.

Abstract: A chaff electronic countermeasure device that includes an antenna element positioned on a substrate and in electrical communication with an integrated circuit. The conductive antenna element includes a conductive composition of a conductive polymer and graphene sheets. The device absorbs from a radar source a first radio frequency having a first amplitude. In response to absorbing the first radio frequency, the device reradiates at least a portion of a second radio frequency having a second amplitude toward the radar source, which results in an increased radar cross section of the device as perceived by the radar source. The second amplitude is higher than the first amplitude. The device is configured to be dispersed from a mobile platform. The device is configured to reradiate at least a second radio frequency toward the radar source, thereby resulting in an increased radar cross section of the device as perceived by the radar source.

Abstract: A radar packaging component including a coating affixed on a substrate. The coating includes a binder and a plurality of acicular flake particles dispersed in the binder. The acicular flake particles exhibit a length and the length of at least 30 percent by volume of the acicular flake particles is oriented in a first axis. A vehicle includes a radar packaging component and a radar sensor positioned under the radar packaging component.

Abstract: The present disclosure provides a method for detecting and tracking a low-observable target with a boost-to-glide trajectory under a condition of slant range ambiguity, and belongs to the field of detection and tracking of near-space hypersonic targets. The method includes: configuring an alternating pulse repetition frequency model for radar ranging; defining an extended non-coherent accumulation model in a distance-time plane for target detection; configuring an S-type recursive energy tracking model for target tracking; designing a recursive energy filter, conducting update by recursive energy to keep target tracking at a high signal-to-noise ratio, and obtaining a target trajectory by using a filter algorithm. According to the method of the present disclosure, pulse repetition frequencies within a same sampling period are designed to a constant value, so that there is enough energy for coherent accumulation detection.

Abstract: The present disclosure relates generally to a portable Global Navigation Satellite System (GNSS). An exemplary surveying system comprises: a total station; a GNSS device; a coupling mechanism for coupling the GNSS device with the total station; wherein the system is configured to: determine, based on one or more outputs from the GNSS device, whether a set of GNSS signals is available; in accordance with a determination that the set of GNSS signals is available, determine a position of a point based on the set of GNSS signals; in accordance with a determination that the set of GNSS signals is not available, automatically determine a position of the point based on an angular measurement and a distance measurement with respect to the point obtained by the total station.

Abstract: A radar device configured to emit radio waves and detects an object present in a prescribed detection region includes an antenna unit and a radio wave reflector. The antenna unit is configured to emit the radio waves. The radio wave reflector is disposed in a region around the antenna unit and outside the detection region and includes a reflection surface having a height gradually changed with respect to an installation surface of the radar device.

Abstract: Methods, systems, and devices for wireless communications are described. The method may include receiving, from a network node, a configuration for radar waveform reporting, the radar waveform reporting providing object detection for one or more objects within a detectable range, receiving a radar waveform, and transmitting, to the network node according to the received configuration, a radar reporting message including an indication of one or more parameter values associated with the received radar waveform.

Abstract: Disclosed is a suppression method for a multipath signal of an image mode based on correlation peaks of a satellite baseband signal, including the steps of: constructing a real-world direct-multipath two-dimensional color image mode data set; and building a multipath suppression model of a deep learning network based on a long-short term memory (LSTM) and a self-attention mechanism module, and training the model. In the present disclosure, a satellite signal can be quickly captured without losing the sensitivity of the captured signal, and a Beidou satellite baseband signal can be captured from a signal recorded in the real world, which enables the model to learn complex signal patterns, improving the accuracy and robustness of multipath signal suppression in urban complex scenes.

Abstract: A system for determining a position of a receiver from as few as two or three transmitters. The receiver may be stationary or moving with a known velocity. The system includes a receiver clock having a clock bias and a clock drift relative to a reference clock and may also include a motion sensor. A decoder receives transmitted signals from a number of transmitters and determine pseudo-ranges and transmitter frequencies therefrom and a processing unit receives the pseudo-ranges, the transmitter frequencies and the receiver velocity and determines the position of the receiver therefrom. When only two transmitters are available, the position of the receiver is determined dependent upon a known receiver clock drift. The system may also determine clock bias and, when three or more transmitters are available, receiver clock drift. The processing unit uses ranging and Doppler equations in combination, and may also use a measured velocity.

Abstract: A method of guiding a guidable vehicle to a target comprises: acquiring at least one position vector describing a position of the target and a position of the guidable vehicle; calculating a distance between the guidable vehicle and a virtual line passing through a predicted position of the target; controlling the guidable vehicle to reduce the calculated distance; repeating the acquisition of the at least one position vector, and automatically updating the virtual line, responsively to the repeated acquisition.

Abstract: The present invention relates to radar systems and methods of using same that are more efficient than current radar systems and methods of using same. Such radar systems and methods of using same using employs a plurality of pluses is used to make a decision on the presence or absence of a target. Such radar system and method of using same is more efficient as the position and velocity of a potential target is carried over from pulse burst to pulse burst. Thus, the radar signal structure from the target is the same, which in turn results in a high cross correlation that can used to efficiently decide if signal return is from an actual target or is due to interference.

Abstract: A communication apparatus includes: control circuitry that controls transmission/reception of a first control frame and a first data frame used for communication with another communication apparatus, and controls transmission/reception of a second control frame and a second data frame used for communication with the another communication apparatus; first radio circuitry that performs radio communication of the first control frame and the first data frame using a first omni-directional antenna; and second radio circuitry that performs radio communication of the second control frame and the second data frame using a second directional antenna.