Abstract: A new measurement approach is disclosed that facilitates significantly smaller size, weight, and power (SWaP) spaceborne radar systems that can provide wide swath, high resolution observations. Multiple beams employed in the scan and the complex volume and/or surface backscatter signals of each beam is recorded. Each beam is electronically swept in azimuth where each beam is held at a constant incidence angle over the azimuth sector that covers the swath. Once the sweep is complete, the platform moves forward, by one along track pixel, and the sweep is repeated in order to provide continuous mapping of the volume and surface covered by the swath. Complex volume backscatter is recorded and mapped to each altitude layer to provide full mapping of the atmosphere.

Abstract: Systems, methods, and computer-readable storage devices for obstacle detection may include an exemplary method of obstacle detection by a computing device. The method includes receiving a first dataset indicating a first surrounding with a first perspective; receiving a second dataset indicating a second surrounding with a second perspective; and generating a composite dataset from the first and second datasets. The method additionally includes identifying an obstacle using the composite dataset.

Abstract: A device for generating an image of an object by electromagnetic waves has a transmission device which is set up to radiate electromagnetic waves in the direction of the object, a receiving device which is set up to receive electromagnetic waves from the object, and a digital processing and control unit which is set up to generate image data of the object from the measured data. Here, the transmission device and the receiving device are arranged in at least one modular unit. The digital processing and control unit has an interface via which different modular units can be exchangeably coupled to the digital processing and control unit. Here, the interface is set up to transmit data to the modular unit and to receive from this, to transmit control signals to the transmission device and to the receiving device, and to supply the modular unit with energy.

Abstract: Examples of active millimeter-wave imaging systems are described which may utilize modulation schemes to provide illumination signals. The use of modulation techniques may allow for the use of direct-conversion receivers while retaining an ability to separate desired received signal from self-jamming and/or DC offset signal(s) generated by the direct-conversion receivers. In some examples, modulation schemes include the use of balanced orthogonal codes which may support MIMO or massive MIMO imaging systems.

Abstract: This document describes techniques and systems of a radar system with modified orthogonal linear antenna subarrays and an angle-finding module. The described radar system includes a first one-dimensional (1D) (e.g., linear) subarray; a second 1D subarray positioned orthogonal to the first 1D subarray; and a two-dimensional (2D) subarray. Using electromagnetic energy received by the first 1D subarray and the second 2D subarray, azimuth angles and elevation angles associated with one or more objects can be determined. The radar system associates, using electromagnetic energy received by the 2D subarray, pairs of an azimuth angle and an elevation angle to the respective objects. In this way, the described systems and techniques can reduce the number of antenna elements while maintaining the angular resolution of a rectangular 2D array with similar aperture sizing.

Abstract: A Signal Processing Unit (SPU) having a thresholding circuit configured to detect a peak cell of a radar data cube, and to output an identification of the peak cell and energy values of the peak cell and its adjacent cells; and an interpolation circuit coupled to the thresholding circuit, and configured to determine and transmit from the SPU to a Digital Signal Processor (DSP), a relative position of the peak cell between the adjacent cells based on the energy values.

Abstract: Various examples are provided related to penetrating radar based upon precursors. In one example, a method includes transmitting a radio frequency (RF) signal; and receiving a return signal associated with the RF signal, where the return signal is a precursor having no exponential decay. The precursor can be one of a sequence of precursors, which can be used to improve resolution of the system. The RF signal can be a short pulse generated by an RF front end, without automatic level control. The return signal can be processed without filtering.

Abstract: A method comprising: obtaining pose data representative of a pose of a portable device during observation of an environment comprising an object; obtaining distance data representative of a distance between the object and a receiver during the observation of the environment, using at least one radio waveform reflected from the object and received by the receiver; and processing the pose data and the distance data to generate a topological model of the object.

Abstract: According to one embodiment, an electronic apparatus comprises antenna elements and processor circuitry. The antenna elements are arranged respectively at least at first, second, third, and fourth positions. The first and second positions are arranged in a first direction. Spacing between the first positions and spacing between the second positions are coprime. The third and fourth positions are arranged in a second direction. Spacing between the third positions and spacing between the fourth positions are coprime.

Abstract: A method allowing data delivered by a rain gauge to be validated in real time is provided. The method includes steps of: receiving, in a defined time window, pluviometric data from a gauge and weather data from at least one weather radar; computing a coefficient of gauge/radar similarity between the pluviometric data received from the gauge and the weather data received from the at least one weather radar; comparing the value of the coefficient of obtained gauge/radar similarity to a threshold gauge/radar value; and validating the pluviometric data of the gauge if the value of the coefficient of gauge/radar similarity is higher than or equal to the threshold gauge/radar value.

Abstract: Embodiments are disclosed that for synthetic aperture radar (SAR) systems and methods that process radar image data to generate radar images using vector processor engines, such as single-instruction-multiple-data (SIMD) processor engines. The vector processor engines can be further augmented with accelerators that vectorize element selection thereby expediting memory accesses required for interpolation operations performed by the vector processor engines.

Abstract: A system for scanning a body to create scan data comprises a processor, a range camera capable of capturing at least a first set of depth images of the body rotated to 0 degrees, and at least a second set of depth images of the body rotated to x degrees, wherein x is >0 degrees, and x<360 degrees. a set of computer instructions are executable on a processor capable of synchronizing scan data and body measurements with a server.

Abstract: A microwave single pixel imager apparatus and method of using same. Sampling a targeted scene includes the following. A plurality of modulated antenna patterns is generated using a reflectarray. A plurality of antenna temperatures respectively corresponding to the plurality of modulated antenna patterns is measured. A retrieved scene corresponding to the sampled targeted scene is generated. Generating a retrieved scene corresponding to the sampled targeted scene includes the following. The plurality of modulated antenna patterns and the corresponding plurality of antenna temperatures are fed into a compressive sensing imaging algorithm.

Abstract: A radar image processing device performs determination of a pixel including a ghost image and changes the value of the pixel which is determined to include the ghost image on a radar image the focus of which has been changed.

Abstract: The invention relates to a method and a motor vehicle comprising a sensor assembly for a 360° detection of the motor vehicle surroundings. The sensor assembly has multiple sensors of the same type, wherein each of the multiple sensors has a specified detection region and the sensors are distributed around the exterior of the motor vehicle such that the detection regions collectively provide a complete detection zone which covers the surroundings in a complete angle about the motor vehicle at a specified distance from the motor vehicle. The sensors are each designed to detect the surroundings in their respective detection region as respective sensor data in respective successive synchronized time increments. The sensor assembly has a pre-processing mechanism which fuses the sensor data of each of the sensors in order to generate a three-dimensional image of the surroundings for a respective identical time increment and provides same in a common database.

Abstract: To provide a radar device capable of tracking a target accurately and stably, taking into account the possibility that a plurality of echoes may merge. A radar device is provided with a tracking processing unit, a merging possibility calculating unit and a preliminary handling processing unit. The merging possibility calculating unit calculates an echo merging possibility, which is the possibility that echo merging, whereby a plurality of echoes become integrated, will occur in the future, based on movement information including the position and speed of a target. The preliminary handling processing unit performs an advance handling process, which is a process for handling future occurrences of echo merging, based on the echo merging possibility.

Abstract: A mm-wave system includes transmission of a millimeter wave (mm-wave) signal by a plurality of transmitters to multiple objects, and receiving of return-mm-wave signals from the multiple objects by a plurality of receivers. A processor is configured to perform an algorithm to derive complex-valued samples and angle measurements from each receiver to identify one object from another object. The processor further extracts signal waveforms that correspond to each object and process the extracted signal waveforms to estimate breathing rate and heart rate of the identified object.

Abstract: An imaging detection chip, including an optical antenna and a photosensitive array in parallel to the optical antenna. The optical antenna is an array structure including a plurality of antenna cells spaced apart and electrically connected to each other. The photosensitive array is an array structure including a plurality of photosensitive cells spaced apart from each other. The plurality of antenna cells and the plurality of photosensitive cells are equal in number. The plurality of antenna cells of the optical antenna is aligned, perpendicularly to a parallel direction of the photosensitive array and the optical antenna, with the plurality of photosensitive cells at corresponding positions of the photosensitive array, respectively. The plurality of antenna cells each includes one or more nanocones each including a top surface; top surfaces of the plurality of antenna cells are electrically connected to each other.

Abstract: This invention provides millimeter wave holographic 3D imaging detection system, which comprises: a transmitting antenna configured to transmit a millimeter wave transmitting signal to an object to be detected; a receiving antenna configured to receive an echo signal from the object to be detected; a millimeter wave transceiving module configured to generate the millimeter wave transmitting signal transmitted to the object to be detected and receive and process the echo signal from the receiving antenna; a scanning device configured to support the millimeter wave transceiving module, the transmitting antenna and the receiving antenna, and move the millimeter transceiving module, the transmitting antenna and the receiving antenna along a preset track, so as to scan the object to be detected with millimeter waves; a data gathering and processing module configured to gather and process the echo signal output from the millimeter wave transceiving module to generate a 3D image of the object to be detected; and an

Abstract: A flying body includes an observation data generation unit that generates observation data on the basis of radio waves received by a radar, an image generation unit that generates an image representing a monitoring space on the basis of the observation data generated by the observation data generation unit, and a detection unit that detects a detection target on the basis of the image generated by the image generation unit.

Abstract: A method and system for resistivity imaging. A method may comprise disposing a downhole tool into a borehole, applying a voltage difference between the array of injector electrodes, constructing a first set of formation images for each of the plurality of frequencies, applying a mud effect removal algorithm to produce a second set of formation images for each of the plurality of frequencies, applying a dielectric correction algorithm to each of the plurality of frequencies to produce a third set of formation images for each of the plurality of frequencies, and combining the first set of formation images, the second set of formation images, and the third set of formation images to obtain a blended image. A system for resistivity imaging may comprise a downhole tool. The downhole tool may comprises a pad, an array of injector electrodes, and one or more return electrodes.

Abstract: A display system includes a display device and a host. The host is separately disposed on the display device and connected to the display device through a wireless or wired manner. The host transmits an image signal to the display device. The display device is configured to display a frame according to the image signal and enlarge a local portion of the frame.

Abstract: An extensible millimeter wave security inspection system, a security inspection method for a human body using the extensible millimeter wave security inspection system and an extensible millimeter wave scanning unit are disclosed. The extensible millimeter wave security inspection system includes at least one security inspection passage, at least one scanning units are provided on at least one side of two sides of each security inspection passage, each scanning unit includes at least one millimeter wave transceiving module, the millimeter wave transceiving module includes an array of millimeter wave antennas configured to transmit and receive millimeter wave signals and a millimeter wave transceiver associated with the array of millimeter wave antennas, and the millimeter wave transceiving module is arranged to scan by millimeter wave a target to be inspected in the security inspection passage along a direction in which the security inspection passage extends.

Abstract: A flying body includes an observation data generation unit that generates observation data on the basis of radio waves received by a radar, an image generation unit that generates an image representing a monitoring space on the basis of the observation data generated by the observation data generation unit, and a detection unit that detects a detection target on the basis of the image generated by the image generation unit.

Abstract: The present disclosure relates to a FMCW Light Detection and Ranging system, a wave train of carrier frequency is modulated in narrow-band sequence, an delay interferometer with in-phase and quadrature outputs extracts the phase of this frequency modulation, and a coherent receiver with in-phase and quadrature outputs detects the phase of reflected light from a remote object, the ratio between two phases determines the distance of the remote object.

Abstract: According to examples of the presently disclosed subject matter, there is provided a system for estimating a source location of a projectile, comprising an optics an optics subsystem, a radar subsystem and a processor. The processor is adapted to use range and velocity measurements obtained from data provided by the radar subsystem, a source direction and an event start time obtained from data provided by the optical subsystem and a predefined kinematic model for the projectile for estimating a range to a source location of the projectile.

Abstract: The methods and device disclosed herein provide electromagnetic (EM) portable device for imaging an object embedded within a medium, the device comprising an array, the array comprises at least two transducers, wherein at least one of the at least two transducers is configured to transmit a signal towards the object, and at least one transceiver attached to said at least two transducers, the at least one transceiver is configured to transmit at least one signal toward the object and receive a plurality of signals affected by the object while the array is moved in proximity to the medium; a data acquisition unit configured to receive and stare the plurality of affected signals; and a processor unit configured to provide one or more hypothetical parameter values aver a parameter space of said at least one object and provide a target model per hypothesis of said parameter values, and compute a score value per hypothesis as a function of the target model and the affected signals.

Abstract: An ultrasonic diagnosing device is provided, which accurately grasps a state of a detected part even in a case of analyzing the state of the detected part in a percutaneous manner. The ultrasonic diagnosing device includes a level assigning module configured to assign an echo intensity to one of a plurality of levels of echo intensities, the echo intensity being an intensity of each of echo signals respectively corresponding to positions in an area-of-interest, and a characteristic amount calculating module configured to calculate, by targeting two or more of samples having the echo intensities assigned to the plurality of levels by the level assigning module, characteristic amounts indicating a characteristic of the area-of-interest, based on a combination of the echo intensities of the two or more of the samples, the two or more of the samples having a given positional relationship with each other.

Abstract: A transmitting array antenna includes a second antenna group placed in a position inside a first antenna group in a first direction and a position different from the first antenna group in a second direction. A receiving array antenna includes a fourth antenna placed in a position outside a third antenna group arranged in the first direction and a position different from the third antenna group in the second direction. An interelement spacing between a receiving antenna of the third antenna group located at an end on a second side is identical to an interelement spacing in the first direction between a transmitting antenna of the first antenna group on the first side and each of the second antenna group. In a case where the first antenna group and the third antenna group are identical in position in the second direction, positions of antennas are different.

Abstract: Plane Wave Imagers (PWI) directly sense the amplitude and phase of electromagnetic waves and do not require a lens to image a scene. PWI's can also be used in the exit pupil of an afocal lens. PWI's are implemented in CMOS using silicon waveguide technology. Since the wavelength of light ranges from less than one to tens of microns, PWI's fabricated on silicon are essentially flat plates, making a PWI a thin and light structure. A CMOS PWI can operate in the visible, near infrared, short wave infrared, and mid wave thermal spectral bands. Benefits of using a PWI include the ability to achieve large optical aperture performance by digitally processing the outputs of multiple small aperture PWI's that are not necessarily precisely optically aligned. Enhanced scene resolution can be obtained by collecting imagery from several adjacent positions and then digitally combining the digital data into one large dataset.

Abstract: Provided is an environment for providing information for supporting adjustment of the respective parts for positioning. A position detecting apparatus includes: an image processing unit that detects, through image processing, a position of a feature portion from image data imaged and acquired when the feature portion of an object is positioned at the respective target positions by a moving mechanism; a position storage unit that stores the detected positions detected at the target positions in association with the respective target positions; and a display data generation unit that generates data for displaying information related to the detected positions on a display unit. The display data generation unit generates data for displaying the respective target positions and the respective detected positions, which are stored in association with the target positions, in the same coordinate space.

Abstract: The methods and device disclosed herein provide an electromagnetic portable device for imaging an object embedded within a medium, the device including an array including at least two transducers, at least one of transducers for transmitting a signal towards the object, and a transceiver attached to the transducers, the transceiver for transmitting at least one signal toward the object and receiving signals affected by the object while the array is moved in proximity to the medium, a data acquisition unit for receiving and storing the affected signals; and a processor unit for providing one or more hypothetical parameter values over a parameter space of the object and provide a target model per hypothesis of the parameter values, and computing a score value per hypothesis as a function of the target model and the affected signals.

Abstract: A method of scanning a clothed human subject (14), the method comprising obtaining first scan data using a first scanner (10) by illuminating the subject with a first source of radiation adapted for scanning soft tissue surfaces hidden by the subject's clothing; and obtaining second scan data by illuminating the subject's torso with a second source of radiation (12-1) that is directed more towards the subject's torso than towards other parts of their body, wherein the second source of radiation comprises tissue penetrating radiation.

Abstract: An imaging device and an imaging method by millimeter wave 3D holographic scanning are disclosed. In an embodiment, the millimeter wave 3D holographic scanning imaging device may include: a conveying apparatus configured to convey an object located thereon in a first direction; and at least one millimeter wave transceiving module arranged beside the conveying apparatus, each configured to be enabled to scan the object when the conveying apparatus conveys the object through the respective millimeter wave transceiving module, wherein each millimeter wave transceiving module is arranged to have its longitudinal direction extend in a direction intersecting the first direction, and includes a millimeter wave transceiving antenna array for transceiving millimeter wave signals.

Abstract: SAR imaging may be performed with range-resolved reflection data, where a spread-spectrum signal, such as a code division multiple access (CDMA) signal, is transmitted instead of a simple frequency chirp. The reflected spread-spectrum signal may be analyzed to gather range-resolved reflection data. Range-resolved reflection data may be gathered at each angular view. This data may be used to construct a more accurate approximation of the Fourier transform of the desired image than can be done by a conventional SAR approach. The image may be reconstructed from this Fourier transform using Fourier inversion techniques similar to those used in conventional SAR approaches. The range-resolved reflection scheme generally requires somewhat more processing to recover the image as compared with conventional SAR systems, but provides a significantly more stable image with less degradation from effects that plague conventional SAR systems.

Abstract: Disclosed is an on-board backup and anti-spoofing GPS (“OBASG”) system for navigating a vehicle through an environment with a GPS receiver. The GPS receiver is configured to receive GPS signals within the environment where the GPS signals may suffer a GPS outage or are unreliable within the environment. In general, the OBASG includes a GPS block-chain recorder, a block-chain storage module, an anti-spoofing module, and a backup navigation module.

Abstract: A system for scanning a body to create scan data comprises a processor, a range camera capable of capturing at least a first set of depth images of the body rotated to 0 degrees, and at least a second set of depth images of the body rotated to x degrees, wherein x is >0 degrees, and x <360 degrees. A set of computer instructions are executable on a processor capable of creating biometrics based on extracted body measurement from the body scan.

Abstract: A system passively images a scene using an antenna for collecting electromagnetic energy from the scene and directing the electromagnetic energy toward a single pixel sensor. A spatial light modulator includes a flexible tape that supports a series of blocking patterns along its length. The tape moves through the electromagnetic energy in an exposure region as the energy travels from the antenna to the sensor and the tape moves on a transport path that is nonlinear outside of the exposure region. A processor captures a set of output values from the sensor to form an image of the scene based on the set of output values. Two blocking pattern structures, either rigid or flexible, can be superimposed in an exposure region between an antenna and a sensor.

Abstract: Plane Wave Imagers (PWI) directly sense the amplitude and phase of electromagnetic waves and do not require a lens to image a scene. PWI's can also be used in the exit pupil of an afocal lens. PWI's are implemented in CMOS using silicon waveguide technology. Since the wavelength of light ranges from less than one to tens of microns, PWI's fabricated on silicon are essentially flat plates, making a PWI a thin and light structure. A CMOS PWI can operate in the visible, near infrared, short wave infrared, and mid wave thermal spectral bands. Benefits of using a PWI include the ability to achieve large optical aperture performance by digitally processing the outputs of multiple small aperture PWI's that are not necessarily precisely optically aligned. Enhanced scene resolution can be obtained by collecting imagery from several adjacent positions and then digitally combining the digital data into one large dataset.

Abstract: Described embodiments include an antenna system and method. The antenna system includes a surface scattering antenna that has an electromagnetic waveguide structure and a plurality of electromagnetic wave scattering elements. The plurality of electromagnetic wave scattering elements are distributed along the waveguide structure, have a respective activatable electromagnetic response to a propagating electromagnetic wave, and produce a controllable radiation pattern. A gain definition circuit defines a radiation pattern configured to acquire a possible interfering signal. The defined antenna radiation pattern has a field of view covering at least a portion of an undesired field of view of an associated antenna. An antenna controller establishes the defined radiation pattern in the surface scattering antenna by activating the respective electromagnetic response of selected electromagnetic wave scattering elements.

Abstract: A computer system, comprising a plurality of computers; and a management computer, wherein a plurality of data stores which store data obtained from a data source and having differing attributes, wherein the management computer has a request allocation unit and holds metadata management information. The request allocation unit is configured to: refer to the metadata management information to select a candidate data store based on analysis results of the data obtaining request including the time attribute of the requested data; determine whether the requested data can be obtained from the candidate data store; determine a data store to which to issue a request for obtaining the requested data; and issue the request to the determined data store.

Abstract: The present invention is directed to a method for processing radar signals in a distributed array radar that includes a first airborne platform and at least one second airborne platform. Doppler filtered radar return samples are obtained and a weight value is calculated as a function of first clutter signals and second clutter signals. The weight value is employed in a weight vector that is computed, as well, from a steering vector that need not be matched to the target vector. The weight vector is applied to a signal vector corresponding to the Doppler filtered radar return samples. An open loop feedback is implemented and configured to create beam pattern nulls at angles corresponding to the plurality of first interference signals within each of the Doppler bins without substantially tracking a position or velocity of the first airborne platform or the at least one second airborne platform.

Abstract: A system for scanning a body to create scan data comprises a processor, a range camera capable of capturing at least a first set of depth images of the body rotated to 0 degrees, and at least a second set of depth images of the body rotated to x degrees, wherein x is >0 degrees, and x<360 degrees. a set of computer instructions are executable on a processor capable of synchronizing scan data and body measurements with a server.

Abstract: A method and apparatus is disclosed for scanning a body. The system comprises a processor and a range camera capable of capturing at least a first set of depth images of the body rotated to 0 degrees and at least a second set of depth images of the body rotated to x degrees, wherein x is >0 degrees, and x<360 degrees. A first set of computer instructions executable on the processor is capable of calculating a first set of three dimensional points from the first set of depth images and a second set of three dimensional points from the second set of depth images. A second set of computer instructions executable on the processor is capable of rotating and translating the first and second set of three dimensional points into a final set of three dimensional points. A third set of computer instructions executable on the processor is capable of creating a three dimensional mesh from the final set of three dimensional points.

Abstract: Systems and methods for detecting faulty elements in an active planar antenna array of an extremely high frequency (EHF) wireless communication device. A planar antenna array having a matrix of dual-polarization modulated scattering probes is disposed within a near-field region of the antenna under test (AUT). Electromagnetic energy received from the AUT is converted to a complex electrical signal that is modulated by an electrical modulation signal and radiated as a scattering signal. The resulting electromagnetic scattering signal, received and converted to an electrical signal by another antenna, is used in a holographic image reconstruction operation via a backward-propagation transformation to reconstruct the signal spectrum radiated from the surface of the AUT. A comparison of this reconstructed signal spectrum with a reference signal spectrum radiated from the surface of a known good antenna array enables detection of faulty antenna elements within the AUT.

Abstract: A vertical profile display includes weather information for an aircraft. In some examples, the weather is displayed in the vertical profile display as a plurality of weather blocks, each block indicating the weather in a volume of space associated with the block. In addition, in some examples, the vertical profile display shows a vertical profile view of a flight path of the aircraft and includes indications of primary weather and secondary weather, where the indication of primary weather is visually distinct from the indication of secondary weather.

Abstract: In one embodiment, a system includes an aircraft body and a propeller coupled to the aircraft body. The propeller includes a plurality of blades forming a rearward-facing curvature with respect to an axis running longitudinally with the aircraft body. The system further includes a surface coupled to a first blade of the propeller that is operable to reflect radio frequency (RF) waves.

Abstract: The application relates to bi-static or multi-static holographic navigation systems, including methods of localizing an emitter or receiver with high precision relative to the sea floor. The system and methods can be used with a fully active sonar or radar system using well synchronized transmitters and receivers. The system and methods can be used with a passive sonar or radar system localizing a transmitter or a receiver based on poorly timed received signals.

Abstract: A lateral distance sensor diagnosis apparatus cooperating with a lateral distance sensor in a vehicle includes a travel enabled distance acquisition section and a diagnosis test section. The travel enabled distance acquisition section determines whether the vehicle is estimated to have contact with an object detected by the lateral distance sensor, based on a distance detected by the lateral distance sensor and a present steering angle. When determining that the vehicle is estimated to have contact with the detected object, the travel enabled distance acquisition section acquires a travel enabled distance based on a distance detected by the lateral distance sensor. The diagnosis test section determines that the lateral distance sensor fails to operate normally when a movement distance becomes greater than the travel enabled distance under state where the steering angle is an angle causing the vehicle to have contact with an object detected by the lateral distance sensor.

Abstract: The present disclosure provides a system and methods for mitigating, or reducing, the intermodulation of an adaptive antenna array's radiating elements. A tunable element may be used with a bias component to increase linearity of the system. These tunable elements may modify a radiating element's capacitance or damping rate. Adjusting the shape of the radiating element or using switches may also modify the resonance strength. Variable couplers may further be added to a system to reduce intermodulation. An adaptive antenna array using the techniques described herein may have all or some of the elements co-located.