Abstract: A method for determining presence of an object via a vehicular radar sensing system includes providing a radar sensor having a plurality of antennas, which includes a plurality of transmitting antennas and a plurality of receiving antennas. The plurality of antennas includes a plurality of sets of antennas, each set having a V shape or an X shape, and with each of the shaped sets of antennas having an apex. A signal feed is provided to the apex of each of the shaped sets of antennas. A radar beam is transmitted via the plurality of transmitting antennas and side lobes of the transmitted radar beam are reduced via the plurality of shaped sets of antennas. An output of the receiving antennas is communicated to a processor, and the processor determines presence of one or more objects exterior the vehicle and within the field of sensing of the radar sensor.

Abstract: A method for detecting a living being on a seat of a vehicle, further relating to a detection arrangement and to a vehicle. The method may include emitting electromagnetic waves at predetermined frequency or at a predetermined frequency band towards the seat by an electromagnetic radiator, receiving electromagnetic waves reflected on a surface by a sensor, detecting an object on the seat from a transit time of the emitted and the reflected electromagnetic waves between the radiator, the surface and the sensor by a detection device, detecting movements of the object from the reflected electromagnetic waves by the detection device if an object has been detected, determining from the detected movements of the object whether the detected object is a living being, and outputting a detection signal by way of the detection device if it has been determined that the detected object is a living being.

Abstract: A proximity sensor for a Laser Guided Bomb (LGB) is provided. A proximity sensor for a Laser Guided Bomb (LGB) includes: an electronics package unit (EPU) configured to be connected to a front end of a warhead; and at least one sensor separate from the EPU and configured to be connected to a forward adapter that is connected to the front end of the warhead. The at least one sensor is configured to obtain data that is used to determine a height above ground of the LGB. The EPU is configured to compare the determined height above ground to a predefined value. The EPU is configured to generate a detonation signal for the warhead based on the determined height above ground being equal to or less than the predefined value.

Abstract: A system and method of identifying and responding to a GPS denial of service includes: configuring a mode S transponder for transmitting a GPS time-of-day message as a downlink format message using a BDS register, and configuring an aircraft surveillance system for receiving one or more GPS time-of-day messages transmitted as a downlink format message. The surveillance system compares the received time-of-day message(s) from the aircraft to a comparison time of day, and validates reception of authentic GPS signals by the aircraft when the received time-of-day message is within a threshold amount of the comparison time of day. The comparison time of day may be the GPS time of day of one of a plurality of aircraft in the surveillance volume or may be the GPS time of day determined by the aircraft surveillance system. An indicator on the transponder indicates counterfeit GPS signals, permitting mitigation od induced navigation error.

Abstract: A cellular network system and method provided herein are directed to generating an area topographic map of a surrounding area of the cellular network system. The cellular network system comprises a transmitter, a receiver, memory, and one or more processors (processors) communicatively coupled to the transmitter, the receiver, and the memory. The memory stores computer-executable instructions that, when executed by the processors, perform certain operations. The transmitter transmits in a target direction a first signal, which is a communication signal intended for a user equipment (UE) and the receiver receives a second signal. The processors determine whether the second signal is a reflected signal associated with the first signal, determine topographic data associated with the surrounding area of the cellular network system in the target direction based at least in part on the second signal, and generate the area topographic map of the surrounding area based on the topographic data.

Abstract: Techniques and apparatuses are described that implement a smart device with an integrated radar system. The radar integrated circuit is positioned towards an upper-middle portion of a smart device to facilitate gesture recognition and reduce a false-alarm rate associated with other non-gesture related motions of a user. The radar integrated circuit is also positioned away from Global Navigation Satellite System (GNSS) antennas and a wireless charging receiver coil to reduce interference. The radar system operates in a low-power mode to reduce power consumption and facilitate mobile operation of the smart device. By limiting a footprint and power consumption of the radar system, the smart device can include other desirable features in a space-limited package (e.g., a camera, a fingerprint sensor, a display, and so forth).

Abstract: A geographic area mapping system may enable collecting, from a set of mobile devices, radio frequency data, the radio frequency data comprising information about a set of network connections in the geographic area; collecting lidar data for the geographic area; generating a mapping between the collected radio frequency data and the collected lidar data for the geographic area; and providing a visualization of the mapped radio frequency data and lidar data for the geographic area.

Abstract: A radar sensing system includes a transmitter and a receiver. The transmitter is configured to transmit a radio signal. The receiver is configured to receive radio signals that include the transmitted radio signal reflected from objects in the environment. The transmitter and receiver are configured to distribute the signal power over frequency so that it is separated from noise and impairments at DC and low frequencies as may be caused by some radar system components which introduce DC offsets and/or low frequency (e.g. flicker) noise.

Abstract: A simulation method for predicting a false positive for a predefined region outside a desired field of view of a radar sensor. Calculated primary rays having a respective primary energy level represent the radar signal. Reflected rays are calculated based on the primary rays or other reflected rays and based on geometrical data for at least one item within the predefined region. An energy level is determined for each reflected ray based on an estimated reflectivity of the at least one item and based on the primary energy level of the respective primary ray, and a clustering level for the reflected rays is determined based on distances of the respective reflection points. A probability for an occurrence of a false positive is estimated based on the energy level and the clustering level.

Abstract: An information handling system manages operation of an infrared time of flight sensor to provide accurate and timely user presence and absence detection through monitoring of the time of flight distance detection for indications of object velocity that validates or invalidates a transition between the user presence and user absence states. An integrated sensor hub in a central processing unit stores distances received from the infrared time of flight sensor in a distance table in association with a time stamp of the distance measurement. During monitoring of distances received from the infrared time of flight sensor, if the integrated sensor hub detects a user absence or presence, validation of the transition is performed by analyzing the stored distances to determine a vector of velocity at the state transition.

Abstract: A radar system for detecting aircraft signatures is provided. The system comprises a plurality of radar clusters where each radar cluster further comprises a plurality of transmit antennas and a plurality of receive antennas. In this context, the plurality of transmit antennas and the plurality of receive antennas are co-located within each radar cluster. Furthermore, the plurality of transmit antennas are time synchronized and/or phase coherent with the plurality of receive antennas.

Abstract: A human presence detector includes a microwave generator, a microwave receiver, a frequency mixing wave detector and a signal processor. The microwave generator is configured to emit and transmit a detecting microwave in a detection space. The microwave receiver is configured to receive a corresponding echo of the detecting microwave. The frequency mixing wave detector, linked to the microwave generator and the microwave receiver, is configured to perform a frequency mixing wave detection on the detecting microwave and the corresponding echo of the detecting microwave to output a primary detecting signal. The signal processor linked to the frequency mixing wave detector is configured to select a fluctuation signal at a predetermined frequency range in the primary detecting signal to amplify and output a secondary detecting signal. Accordingly, in response to the detection of the motion at the predetermined frequency range, a human (living) body is detected and determined in the detection space.

Abstract: A method of estimating a radar cross section of a target in an environment using a detection device, wherein the detection device is configured to transmit transmission signals into a field of view and to receive reception signals, may include: generating a calibration curve that provides signal amplitude values as a function of positions in the field of view; detecting a reception signal, obtaining a corresponding detection profile, and analyzing the detection profile to identify the target, having a target signal amplitude and a target position corresponding thereto; and estimating the radar cross section of the target by comparing the target signal amplitude with a signal amplitude base value, provided by the calibration curve at the target position. The generating of the calibration curve may include: generating a combined profile as a function of position; and optionally, generating a filtered profile by applying a filter to the combined profile.

Abstract: Methods, systems, and apparatus, including medium-encoded computer program products, for 3D flight tracking of objects include a method including determining a golf ball trajectory based on observations by sensor(s), extrapolating the trajectory backward in time, calculating distance measure(s) between the extrapolated trajectory and physical locations, estimating a systemic error for observation(s), wherein the systemic error affects observed ball positions, estimating a stochastic error associated with the observation(s), wherein the stochastic error affects an angle of a trajectory determined from observed ball positions, combining the estimated systemic and stochastic errors to form error measure(s) for the distance measure(s), identifying one of the physical locations as an origin for the golf ball when the error measure(s) satisfy a criterion, and waiting for additional observations of the golf ball by the sensor(s) when the error measure(s) do not satisfy the criterion.

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, radio signals may reach a receiving antenna at a user equipment by two or more paths, which can cause interference (e.g., destructive multipath interference, constructive multipath interference, etc.). To reduce the interference, the user equipment may perform interference suppression, shaping, or both based on choosing radar waveform patterns that are varied across chirps. In one aspect, the user equipment (e.g., a vehicle) may identify waveform patterns selected by nearby vehicles based on side channel or centralized signaling and may suppress or shape interference by selecting waveform parameters based on this information. In one aspect, the pattern of waveform parameters is chosen from a codebook of patterns. The selected pattern can be broadcasted to the other vehicles using a side-communication channel.

Abstract: An ad hoc approach denoted as devoid clutter capture and filling (DeCCaF) that addresses the nonstationarity effects that arise when input radar waveform returns exhibiting dynamic spectra variations are processed to combat dynamic RFI is disclosed. Portions of the spectra of each input waveform return of a set of input radar waveform returns processed during the CPI may be filled with clutter information borrowed from other waveform returns of the set of waveform returns. DeCCaF may combined with an appropriate filter (e.g., a matched filter, a mismatched filter) to achieve results that are nearly indistinguishable from input radar waveform returns in which no spectral variation are present.

Abstract: A self-diagnosis device of a module including a general-purpose multi-channel IC and a reception phase shifter IC having a plurality of transmission output terminals and reception terminals is configured to perform a self-diagnosis of the reception phase shifter IC by utilizing a signal that is generatable by the general-purpose multi-channel IC, which is enabled by a self-diagnosis signal generation unit that generates a self-diagnosis signal by using (a) a first output signal supplied to a multi-channel receiver of the general-purpose multi-channel IC and (b) a third output signal and a self-diagnosis clock signal synchronously output from a single PLL.

Abstract: Antenna array systems and methods for simulating QPSK beam forming having binary phase shifter associated with each transmitting antenna configured to apply a phase shift of 180 degrees to a transmitted signal, and a controller configured to send instructions to the binary phase shifters. The receiving antennas are connected to a post processor comprising a memory operable to save received signals; and a processing unit operable to apply a 90 degree phase shift to selected received signals stored in the memory, and further operable to sum received signals stored in the memory. Optimized antenna array configurations are disclosed.

Abstract: A method for checking the plausibility of an initially known transverse movement of an object. The method includes: emission of a radar signal having constant signal frequency, and reception by a radar device of reflections of the radar signal having constant signal frequency; and checking the plausibility of the transverse movement of the object by analyzing frequency ranges corresponding to the transverse movement in a spectrum of the reflected radar signal having constant signal frequency.

Abstract: A method may include determining an alignment time based on a zero-crossing point corresponding to a LiDAR sensor and a horizontal field of view corresponding to an image-capturing sensor. The method may include determining a delay timing for initiating image capturing by the image-capturing sensor in which the delay timing is based on at least one of: the alignment time, a packet capture timing corresponding to the LiDAR sensor, and an average frame exposure duration corresponding to the image-capturing sensor. The method may include initiating data capture by the LiDAR sensor, and after the initiating of data capture by the LiDAR sensor and after the delay timing has elapsed, initiating data capture by the image-capturing sensor.