Technologies for calibrating radars and tracking space objects. Some of such technologies enable a technique for calibrating a radar based on using -A- an elemental antenna (308), which can be embedded on a housing hosting a set of antenna elements, or -B- an antenna (146) mounted to a reflector. Some of such technologies enable a radar site containing a first 1D phased array (112) and a second 1D phased array (112), where the first 1D phased array sends a set of signals and receives a set of reflections based on the set of signals, and the second 1D phased array receives the set of reflections.

System, methods, and other embodiments described herein relate to improving the safety of a vehicle in relation to occurrences of smoke and fire. In one embodiment, a method includes acquiring, from a radar of a subject vehicle, radar data about a passenger cabin of the subject vehicle. The method includes determining a current state of the passenger cabin according to the radar data. The method includes, responsive to identifying that the current state indicates smoke is present within the passenger cabin, controlling the subject vehicle to generate a response to the smoke.

System, methods, and other embodiments described herein relate to improving the safety of a vehicle in relation to occurrences of smoke and fire. In one embodiment, a method includes acquiring, from a radar of a subject vehicle, radar data about a passenger cabin of the subject vehicle. The method includes determining a current state of the passenger cabin according to the radar data. The method includes, responsive to identifying that the current state indicates smoke is present within the passenger cabin, controlling the subject vehicle to generate a response to the smoke.

A fire control method against aerial targets flying toward a protection object when the position of the protection object is known includes measuring the position of the aerial target, estimating the position of the aerial target, estimating the velocity of the aerial target, predicting the future path of the aerial target from the estimated position of the aerial target and the estimated velocity of the aerial target, and deciding, on the basis of the predicted path, whether the aerial target i.) is incoming and thus a threat against the protection object, ii.) is passing by and thus not a threat to the protection object.

A fire control method against aerial targets flying toward a protection object when the position of the protection object is known includes measuring the position of the aerial target, estimating the position of the aerial target, estimating the velocity of the aerial target, predicting the future path of the aerial target from the estimated position of the aerial target and the estimated velocity of the aerial target, and deciding, on the basis of the predicted path, whether the aerial target i.) is incoming and thus a threat against the protection object, ii.) is passing by and thus not a threat to the protection object.

A transceiver may wirelessly transmit a communication signal at a first frequency and a sensing signal at a second frequency. The communication signal may include a command that causes a backscatter node to modulate impedance of an antenna, and thereby modulate reflectivity of the backscatter node. The communication signal may also deliver wireless power to the backscatter node. While the impedance is being modulated in response to the command, the transceiver may transmit the sensing signal and measure wireless reflections. The power of the sensing signal may be much lower than that of the communication signal. The transceiver may frequency hop the sensing signal in a wide band of frequencies and take measurements at each frequency in the hopping. Based on the measurements, a computer may determine time-of-flight or phase of a reflected signal from the backscatter node and may estimate location of the backscatter node with sub-centimeter precision.

A transceiver may wirelessly transmit a communication signal at a first frequency and a sensing signal at a second frequency. The communication signal may include a command that causes a backscatter node to modulate impedance of an antenna, and thereby modulate reflectivity of the backscatter node. The communication signal may also deliver wireless power to the backscatter node. While the impedance is being modulated in response to the command, the transceiver may transmit the sensing signal and measure wireless reflections. The power of the sensing signal may be much lower than that of the communication signal. The transceiver may frequency hop the sensing signal in a wide band of frequencies and take measurements at each frequency in the hopping. Based on the measurements, a computer may determine time-of-flight or phase of a reflected signal from the backscatter node and may estimate location of the backscatter node with sub-centimeter precision.

A high angular resolution processing method for MIMO system applies a symmetric array antenna for receiving an input signal matrix. The input signal matrix is a transmission signal or reflex signal of at least one target object. The method includes following steps. Step S1: outputting a conversion matrix according to an amount of the symmetric array antenna; step S2: performing a real number conversion using the input signal matrix and a plurality of angle-related pursuit matrixes through the conversion matrix, obtaining a real number input signal matrix and real number pursuit matrixes; and step S3: inputting the real number input signal matrix and the real number pursuit matrixes to an orthogonal matching pursuit model. Obtaining an amount of the target object and an angle of a location corresponding to the target object.

Disclosed is a method and a system for retrieving a location of a base point of a wheeled vehicle in a local coordinate system of a tridimensional sensor mounted on the vehicle. The method includes acquiring point cloud frames while the wheeled vehicle is moving along a straight path and a curved path and a point cloud representative of a portion of the vehicle, computing a main direction vector, a main direction line and a location of an instantaneous centre of rotation of the wheeled vehicle in the local coordinate system, and retrieving the location of the base point.

An information handling system is disclosed and includes a processor, a memory, a power management unit (PMU), at least two antennas, and a wireless interface operatively coupled to the at least two antennas. The processor may execute code instructions for a distance and direction detection module therein configured to enable phase-based ranging with narrow band tone exchange, to add at least one constant tone duration to a wireless data signal frame, to monitor for nearby peripheral devices, and to measure at least two distances between each of the at least two antennas at the information handling system and a nearby peripheral device using switching between the at least two antennas.