Abstract: Improved optical modulation is provided in materials which are both piezoelectric and optically isotropic. This enables an acousto-optic modulator configuration with a longitudinal interaction geometry for the optical and acoustic waves which also provides a large acceptance angle. Preferably, the acoustic modulation is at a frequency that corresponds to a mechanical resonance of the modulator window.

Abstract: An optical modulator with a wide aperture, high acceptance angle, low required drive voltages and high operating frequency is provided. The modulator relies on the photoelastic effect and makes use of mechanical resonance in order to improve efficiency. The acoustic excitation and optical propagation path are nominally co-aligned, so the required symmetry breaking is provided by having the modulator material be optically and/or mechanically anisotropic. Such a modulator can be used to enable efficient and low-cost per-pixel optical ranging and speed sensing.

Abstract: In some embodiments, there is provided an apparatus including a common bus and a plurality of oscillatrode circuits coupled to the common bus, the plurality of oscillatrode circuits including a first oscillatrode circuit outputting a first frequency tone when a first input voltage is detected by the first oscillatrode circuit and a second oscillatrode circuit outputting a second frequency tone when a second input voltage is detected by the second oscillatrode circuit, wherein common bus carries the first frequency tone and the second frequency tone at different frequencies in a frequency division multiplex signal. Related systems, methods, and articles of manufacture are also disclosed.

Abstract: A radar data acquisition circuit comprising: a radar receiver to receive radar data representing a radar scene in response to a sequence of extended sampling waveform frames that includes multiple sampling waveform subframes; and a first processor; configured with stored program instructions to generate one or more replacement sampling waveform subframes to include in an extended sampling waveform frame of the sequence based at least in part upon one or more radar parameters of radar data received using the sequence of extended sampling waveform frames.

Abstract: A sensor system comprising multiple sensor units non-collocated at a site; processing circuitry operatively coupled to memory is configured to perform operations comprising: producing sensor unit tracks, each sensor unit track comprising one or more object attributes including relative object location attributes and non-location attributes; for each sensor unit track, translating the one or more relative object location attributes of the sensor unit track, to one or more universal object location attributes; fusing sets of sensor unit tracks, based at least in part upon corresponding object attributes of the sets of sensor unit tracks, to produce unified site tracks that include the corresponding object attributes; and saving the unified site tracks in a non-transitory storage device.

Abstract: A radar sensor system is provided that includes: multiple sensor units that each includes a radar receiver and a location sensor; and a processor that is configured to use location sensor-based information to determine differences between respective sensor unit nominal locations and respective sensor unit actual locations and to use the determined differences to fuse the radar data received at the radar receivers to produce a wide radar aperture.

Abstract: Methods and apparatus, including computer program products, are provided for synchronization. In some example embodiments, there may be provided a method. The method may receiving, at a processor, cross module information, the cross module information including target profile information obtained from radar returns received at first radar module and transmitted by a second radar module; and determining, at the processor, a frequency correction, a time correction, and/or a phase correction, the determining based at least on the received cross module information. Related systems, methods, and articles of manufacture are also described.

Abstract: A hybrid RF-acoustic relay is provided where some but not all of the incident RF power is rectified to power the relay and, optionally, to provide power for further link features. The remaining fraction of the incident RF power is used to directly drive an acoustic transceiver array in communication with one or more acoustically powered nodes. In this manner, power, control and communication can be efficiently provided to acoustically powered nodes even in situations where an RF link or an acoustic link would perform poorly.

Abstract: In some example embodiments, there is provided a tag. The tag may include an antenna configured to receive a first radio frequency signal and to reradiate a second radio frequency signal; and an ultrasonic transducer coupled to the antenna, wherein an ultrasound signal received by the ultrasonic transducer causes a variation of at least one property of the ultrasonic transducer, wherein the variation of the at least one property imparts a modulation onto at least a portion of the first radio frequency signal, and wherein the modulated first radio frequency signal is reradiated by the antenna as the second radio frequency signal. Related system, methods, and articles of manufacture are also disclosed.

Abstract: An imaging system is provided comprising: a memory storing instructions which, when executed by processing circuitry, cause the processing circuitry to perform operations comprising: determining multiple image regions of interest (ROIs) within a camera image plane that correspond to one or more three-dimensional (3D) world object images; determining multiple radar ROIs that correspond to one or more 3D world objects; determining 3D world distances corresponding to the radar ROIs; determining multiple co-registered ROI pairs by co-registering individual image ROIs with individual radar ROIs corresponding to common 3D world objects; adjusting one or more parameters associated with the camera, based upon the co-registered ROI pairs.

Abstract: An imaging system is provided comprising: a memory storing instructions which, when executed by processing circuitry, cause the processing circuitry to perform operations comprising: determining multiple image regions of interest (ROIs) within a camera image plane that correspond to one or more three-dimensional (3D) world object images; determining multiple radar ROIs that correspond to one or more 3D world objects; determining 3D world distances corresponding to the radar ROIs; determining multiple co-registered ROI pairs by co-registering individual image ROIs with individual radar ROIs corresponding to common 3D world objects; adjusting one or more parameters associated with the camera, based upon the co-registered ROI pairs.

Abstract: Improved localization of the capsule in acoustic capsule endoscopy is provided by using analysis of the frames of the acoustic images to deduce the relative motion of the capsule from frame to frame. This idea can be supplemented with any combination of: further localization methods; propulsion of the capsule via acoustic radiation reaction; bidirectional communication and system level feedback control; energy harvesting; photoacoustic (or x-ray acoustic) imaging; and adding therapy and/or sensor capabilities to the capsule.

Abstract: A sensor system comprising multiple sensor units non-collocated at a site; processing circuitry operatively coupled to memory is configured to perform operations comprising: producing sensor unit tracks, each sensor unit track comprising one or more object attributes including relative object location attributes and non-location attributes; for each sensor unit track, translating the one or more relative object location attributes of the sensor unit track, to one or more universal object location attributes; fusing sets of sensor unit tracks, based at least in part upon corresponding object attributes of the sets of sensor unit tracks, to produce unified site tracks that include the corresponding object attributes; and saving the unified site tracks in a non-transitory storage device.

Abstract: A microfluidics device includes an inlet, a plurality of parallelized microfluidic channels, a splitter and a plurality of detection electrodes. The inlet receives a fluidic sample including biological particles. The parallelized microfluidic channels include interaction zones for analysis of the biological particles. The splitter transmits the fluidic sample into the parallelized microfluidic channels. Detection electrodes can conduct the analysis. Each detection electrode is shared among the parallelized microfluidic channels. The detection electrodes are spatially encoded electrodes arranged on locations of each of the parallelized microfluidic channels.

Abstract: A partially coordinated radar system is provided comprising: a radar transmitter; a radar receiver; processing circuitry; a first spatial information indicator; a side channel communication system to send radar waveform configuration information from the transmitter to the receiver; processing circuitry to use the waveform information to configure the radar receiver to receive the waveform signal; determine radar-based spatial information based upon the radar waveform signal; determine a mismatch of clocks or local oscillators of transmitter and receiver; and generating a compensation signal indicating correction information to compensate for the determined at least one mismatch.

Abstract: In some embodiments, there is provided an apparatus including a common bus and a plurality of oscillatrode circuits coupled to the common bus, the plurality of oscillatrode circuits including a first oscillatrode circuit outputting a first frequency tone when a first input voltage is detected by the first oscillatrode circuit and a second oscillatrode circuit outputting a second frequency tone when a second input voltage is detected by the second oscillatrode circuit, wherein common bus carries the first frequency tone and the second frequency tone at different frequencies in a frequency division multiplex signal. Related systems, methods, and articles of manufacture are also disclosed.

Abstract: A system is provided that learns a radar scene's background and that filters radar tracks determined to be in the radar scene background; The system including processing circuitry configured with executable instructions to accesses radar tracks that include radar measurements; to use the measurements to determine a persistent radar object in a radar scene background; and to subsequently filter accessed radar tracks having locations within the radar scene background.

Abstract: An imaging system is provided comprising: a memory storing instructions which, when executed by processing circuitry, cause the processing circuitry to perform operations comprising: determining multiple image regions of interest (ROIs) within a camera image plane that correspond to one or more three-dimensional (3D) world object images; determining multiple radar ROIs that correspond to one or more 3D world objects; determining 3D world distances corresponding to the radar ROIs; determining multiple co-registered ROI pairs by co-registering individual image ROIs with individual radar ROIs corresponding to common 3D world objects; adjusting one or more parameters associated with the camera, based upon the co-registered ROI pairs.

Abstract: Direct signal distribution at mm-wave frequencies is provided by using dielectric waveguides for passive coherent distribution. The relevant distribution path lengths at mm-wave frequencies are short enough that accumulated phase error is not a significant problem. Meanwhile, the dielectric waveguides provide low loss and substantial immunity to electrical interference, thereby avoiding the main disadvantages of direct signal distribution in RF systems.

Abstract: Systems and methods for smart device control using radar are disclosed. According to some aspects, a machine receives, using a millimeter-wave multiple antenna array, a radar signal. The machine preprocesses the radar signal to generate radar metadata. The machine determines, using a trained machine learning engine and based on at least the radar metadata, a moving entity and a movement type. The machine identifies, based on at least the determined moving entity and the determined movement type, a smart device and an action for the smart device to take in response to the movement type by the moving entity. The machine transmits, to the smart device, a control signal for the identified action.