Abstract: An antenna device for a radar sensor, including: at least one first antenna array that is situated on a surface of a substrate and that includes a defined number of planar antenna elements connected in series; at least one second antenna array that is situated on the surface of the substrate and that includes a defined number of planar antenna elements connected in series; a feed line that is connected at the center of each of the two antenna arrays; with the aid of the feed line a feed signal being feedable into the antenna array in such a way that a feed signal that is phase-shifted by 180 degrees with respect to the second antenna array is suppliable to the first antenna array.

Abstract: Apparatus and associated methods relate to creating corrected images of a scene for a terminal-imaging seeker using an electrically-controllable coded-aperture mask pattern embodied in a programmable spatial light modulator. The coded-aperture mask pattern includes a plurality of pinhole-like apertures, each of which is configured to perform pinhole-like lensing of the scene. The plurality of pinhole-like apertures form a multiplex of overlapping images on a focal plane array aligned with the optical axis. An image processor reconstructs, based on a configuration of the plurality of pinhole-like apertures and the multiplex of overlapping images, a single image of the scene.

Abstract: A positioning apparatus, including: positioning calculation devices for positioning for a plural antenna, to acquire positioning results indicating the antennas positions and accuracy indices indicating accuracies of the positions, the antennas receiving GPS satellites signals and having a known distance between each antennas; and a determination device including: a determination unit performing first determination whether accuracies indicated by the accuracy indices of two antennas out of the plural antenna is higher than a first threshold and second determination whether a difference between a measured distance between the two antennas based on a difference between positioning results of the antennas and an actual distance therebetween is smaller than a second threshold, to thereby acquire a reliability index (RI) and a final positioning result (FPR) based on the two determinations; and an output signal generation unit for generating positioning information for controlling a human interface (HI) to notify a

Abstract: A system and bent-pipe transponder component for determining a location of an individual or object in three dimensional space. The system includes a transmitter configured to transmit a first wireless electromagnetic signal at a first frequency and at least one transponder that is configured to responsively emit a second wireless electromagnetic signal having a second frequency that is frequency-shifted from the first frequency. An included receiver detecting the first and second wireless electromagnetic signals is configured to provide an output of location information for the at least one transponder. A bent-pipe transponder component may include a receiving antenna, an emitting antenna, and a frequency shift stage comprising an oscillator and a first mixer, with the frequency stage mixing a received first wireless electromagnetic signal with the output of the oscillator via the first mixer to produce the emitted second wireless electromagnetic signal.

Abstract: Aspects of the disclosure are directed to adaptive correction of radar channel-to-channel time-dependent errors. In accordance with one aspect, the adaptive correction of radar channel-to-channel time-dependent errors includes transforming a digitized data flow to generate a transformed data flow; detecting the transformed data flow to generate a detected data flow; focusing the detected data flow to generate a focused data flow; and aligning the focused data flow to generate a corrected data flow. In one aspect, it may further include performing a direction of arrival (DOA) processing on the corrected data flow to generate a resolved data set, processing the resolved data set to generate a post-processed data set, radiating a transmit radar waveform, capturing a receive radar waveform related to the transmit radar waveform and generating the digitized data flow based on the receive radar waveform.

Abstract: The disclosure relates to a method for measuring fill level of a fill substance using terahertz (THz) pulses or for determining distance to an object using terahertz pulses, as well as to a fill-level measuring device suitable for performing such method. The THz pulses are transmitted with a repetition frequency, wherein the repetition frequency according to the invention is controlled in such a manner as a function of travel time that the repetition frequency increases in the case of decreasing travel time and decreases in the case of increasing travel time. The separation or the fill level is determined not based on the measured travel time, but is based on repetition frequency. An exact fill level determination can be performed based on THz pulses, even when the frequency of the THz pulses significantly fluctuates. Consequently, very simply embodied pulse production units with comparatively small requirements for frequency stability of the THz pulses can be used.

Abstract: An approach to authentication, provisioning, and/or access control makes use of a user performing prescribed motion of their body and/or particular limbs (e.g., a prescribed number of steps in one or more directions), for example, as part of a challenge-response protocol. The motion may be detected using the radio frequency reflection techniques. Applications of this approach may include provisioning of equipment that monitors motion within an environment. In some examples, the environment is defined as part of the user performing the prescribed motion (e.g., the user walks around a boundary of their house).

Abstract: A positioning support device holds available stored data which enables a determination of characteristics of radio signals transmitted by the positioning support device, wherein the characteristics of radio signals are expected to be observable at different locations. The positioning support device automatically and repeatedly transmits the stored data. Mobile devices may receive the data to estimate their position based on the data and based on measurements on radio signals received at their current location. The positioning support device may be caused by some other apparatus to store the data that is transmitted by the positioning support device. The data may be obtained based on characteristics of radio signals observed by at least one mobile device at each of a plurality of measurement locations.

Abstract: A vehicle-based method of determining the extent to which a target object is a single scatterer, said vehicle including a radar system including a radar transmit element, adapted to send a radar signal towards said target object, and an antenna receive array comprising a plurality M of a receive elements, providing a corresponding plurality of N radar receive channels, and adapted to receive radar signals reflected from said target object, said method comprising: a) transmitting a radar signal from said radar transmit element to said target object; b) receiving the reflected signal of the signal transmitted in step a) from the target object at said plurality of receiver elements; c) for each antenna element or channel, processing the received signal to provide amplitude or power data in the frequency domain; d) with respect to the data in step c), for each receive element/channel, determining the frequency with the maximum amplitude or power; e) determining the degree of variability of the results of step d)

Abstract: A method for automatically determining a potential transmission region, comprising: acquiring multiple binary indications for a direct line of sight between a transmitter and an airborne vehicle respective of multiple geo-positions of the airborne vehicle; acquiring each of the multiple geo-positions respective of each of the multiple binary indications for the direct line of sight; for each one of the acquired geo-positions, determining a layer of access respective of topographical data for the geographical region and the acquired geo-position, as a subset of the geographical region that includes at least one potential point defining a potential line of sight between the transmitter and the airborne vehicle, thereby determining multiple layers of access; determining an intersection of the multiple layers of access; and determining, from the intersection, the potential transmission region respective of the transmitter and the geo-positions of the airborne vehicle.

Abstract: A fill level measuring device having at least one transmitting and receiving unit, a measuring antenna with a first supply element for transmitting and receiving an electromagnetic measurement signal and at least one dielectric body for guiding and/or shaping the waves of the measurement signal, and a communication antenna. The communication antenna has at least one second supply element for wireless transmission and for receiving an electromagnetic communication signal. To provide a fill level measuring device that can be used particularly flexibly, the first supply element and the second supply element are arranged inside the dielectric body so that the dielectric body is able to guide and/or shape the measurement signal and the communication signal.

Abstract: A method and apparatus for determining a direction of an object using a plurality of antennas is disclosed. The method includes determining an optimal antenna pattern to determine the direction of the object from among a plurality of candidate antenna patterns using a portion of the antennas, and determining the direction of the object using the optimal antenna pattern.

Abstract: Embodiments include active protection systems and methods for an aerial platform. An onboard system includes one or more radar modules, detects aerial vehicles within a threat range of the aerial platform, and determines if any of the plurality of aerial vehicles are an aerial threat. The onboard system also determines an intercept vector to the aerial threat, communicates the intercept vector to an eject vehicle, and causes the eject vehicle to be ejected from the aerial platform to intercept the aerial threat. The eject vehicle includes a rocket motor to accelerate the eject vehicle along an intercept vector, alignment thrusters to rotate a longitudinal axis of the eject vehicle to substantially align with the intercept vector, and divert thrusters to divert the eject vehicle in a direction substantially perpendicular to the intercept vector. The eject vehicle activates at least one of the alignment thrusters responsive to the intercept vector.

Abstract: A position detection system (10) includes receivers (20a to 20g) constituting a radio mesh network, and a gateway device (30). Each of the receivers (20a to 20g) includes a receiving unit (22), a sending unit (23), and a control unit (24). When the receiving unit (22) in each of the receivers (20a to 20f) receives the beacon, the control unit (24) generates first reception information containing information indicating signal strength of the received beacon and identification information of the relevant receiver, and sends the first reception information from the sending unit (23). When the receiving unit (22) receives second reception information, the control unit (24) sends the second reception information. When receiving the second reception information generated by the other receiver, the receiver (20g) connected to the gateway device (30) sends the received second reception information to the server device (34) through the gateway device (30).

Abstract: A ship handling device executing dynamic positioning control with which the fixed-point maintaining accuracy including measurement accuracy of a satellite positioning system can be assessed. In this ship handling device for maintaining a ship body at a target position using a GNSS (Global Navigation Satellite System) device, a positioning accuracy level of the GNSS device is calculated based on a radio-wave reception state of the GNSS device, a fixed-point deviation amount level is calculated based on a fixed-point deviation amount calculated based on the target position and a measured position measured by the GNSS device, and a fixed-point maintaining accuracy level indicative of an assumed range of an absolute position of the ship body relative to the target position is determined with reference to the positioning accuracy level and the fixed-point deviation amount level.

Abstract: A method includes obtaining a first track associated with a first time. A first track associated with a first time is obtained. First predicted state data associated with a second time that is later than the first time, are generated based on the first track. Radar measurement data associated with the second time are obtained from one or more radar sensors. Track data are generated by a machine learning model based on the first predicted state data and the radar measurement data. Second predicted state data associated with the second time are generated based on the first track. A second track associated with the second time is generated based on the track data and the second predicted state data. The second track associated with the second time is provided to an autonomous vehicle control system for autonomous control of a vehicle.

Abstract: A method of positioning a device includes: receiving satellite signals corresponding to at least 5 satellites in a global navigation satellite system (GNSS); determining whether there is one of the satellite signals has a wrong bit edge from at least navigation data of the satellite signals; and in response to a determination that there is one of the satellite signals has a wrong bit edge, finding out a wrong satellite signal among the satellite signals, and using the navigation data of the other satellite signals to obtain a position of the device.

Abstract: The present invention relates to a missile or aircraft with a hierarchical, modular, closed-loop flow control system and more particularly to aircraft or missile with a flow control system for enhanced aerodynamic control, maneuverability and stabilization. The present invention further relates to flow control system involving different elements including flow sensors, active flow control device or activatable flow effectors and logic devices with closed loop control architecture. The active flow control device or activatable flow effectors of these various embodiments are adapted to be activated, controlled, and deactivated based on signals from the sensors to achieve a desired stabilization or maneuverability effect. The logic devices are embedded with a hierarchical control structure allowing for rapid, real-time control at the flow surface.

Abstract: A portable Doppler microwave radar defense system that saves lives in dangerous situations, and alerts a person from surrounded threats, exposes enemy location, and shows the health data and injured person's location to remote server at a base. The system lets the person know about the surrounded threats before it happens, as it will detect any bullets in the detection zone and alert the person immediately from the incoming bullet within a long range which will let the person have seconds to avoid the bullet and save his life and the location of the shooter will be exposed to the person. The detection system can also be deployed over an object such as a car, truck, battle tank, aircraft, jet, helicopter, spaceship, or a satellite.

Abstract: A method for processing radar data is described herein. In accordance with one embodiment, the method includes the calculation of a Range Map based on a digital radar signal received from a radar receiver. The Range Map includes spectral values for a plurality of discrete frequency values and a plurality of discrete time values, wherein each spectral value is represented by at least a first parameter. Further, the method includes applying an operation to at least the first parameters in the Range Map for at least one discrete frequency value to smooth or analyze at least a portion of the Range Map.