Abstract: A scanner for image reconstruction of a structure of a target object uses a neural network trained to classify each segment of a sequence of segments of a modified wave into one or multiple classes. The sequence of segments corresponds to the sequence of layers of the target object, such that a segment of modified wave corresponds to a layer having the same index in the sequence of layers as an index of the segment in the sequence of segments. The scanner executes the neural network for each wave modified by penetration through the layers of the target object to produce the classes of segments of the modified waves. Next, the scanner selects the classes of segments of different modified waves corresponding to the same layer to produce an image of the layer of the target object with pixel values being functions of labels of the selected classes.

Abstract: A battery diagnostic system stores capacity degradation models for batteries of a specific type mapped to sets of battery cycle models formed by voltages and/or currents measured at different capacities. Each capacity degradation model is mapped to a set of battery cycle models associated with different battery capacities. The system, upon accepting measurements indicative of a battery cycle and a current capacity of the test battery, compares the battery cycle of the test battery with the battery cycle models of different capacity degradation models associated with a value of the battery capacity closest to the current capacity of the test battery to select a battery cycle model closest to the battery cycle of the test battery and the degradation capacity model mapped to the selected battery cycle model. The system estimates future degradation of the capacity of the test battery based on the retrieved capacity degradation model.

Abstract: A communication system receives a jammed signal including a sequence of complex numbers encoding one or combination of symbols transmitted by multiple transmitters. The system transforms the sequence of complex numbers into an image of real numbers having at least two columns and multiple rows, with real values of real and imaginary parts of each complex number forming different columns but the same row of the first image, processes the image with a neural network trained to suppress the wideband signal in the received signal, and detects the symbols transmitted by the transmitters from the de-jammed signal.

Abstract: A multi-satellite system includes a first satellite and a second satellite configured to be separated in a predetermined distance between the satellites after being launched into space, and a tether including an optical fiber having first and second ends, wherein the first end is connected to the first satellite and the second end is connected to the second satellite, wherein a length of the tether is greater than the predetermined distance. In this case, the first satellite includes an optical transceiver connected to the first end of the optical fiber to provide a communications link to the second satellite, a spool containing partial winding of the tether, and a free space optical transceiver to provide a first communications link to a first distant satellite.

Abstract: A positioning system for global navigational satellite system (GNSS) includes a first receiver to measure a first carrier phase of a carrier signal emitted by a satellite and a second receiver to measure a second carrier phase of the carrier signal emitted by the satellite. The, first carrier phase includes a first carrier phase ambiguity as an unknown integer number of wavelengths of the carrier signal travelled between the satellite and the first receiver. Similarly, the second carrier phase includes a second carrier phase ambiguity as an unknown integer number of wavelengths of the carrier signal travelled between the satellite and the second receiver.

Abstract: An encoder including an emitter to emit a waveform to a scene including a structure. A receiver to receive the waveform reflected from the scene and to measure phases of the received waveform for a period of time. A memory to store a signal model relating phase measurements of the received waveform with phase parameters, and to store a state model relating the phase parameters with a state of the encoder. Wherein the signal model includes a motion-induced polynomial phase signal (PPS) component and a sinusoidal frequency modulated (FM) component. Wherein the PPS component is a polynomial function of the phase parameters, and wherein the FM component is a sinusoidal function of the phase parameters. A processor to determine the phase parameters using non-linear mapping of the phase measurements on the signal model and to determine the state of the encoder by submitting the phase parameters into the state model.

Abstract: A vehicle includes a controller to control an operation of at least one component of the vehicle, a clock to synchronize the operation of the component of the vehicle, a memory to store a clock offset to the clock of the vehicle to synchronize the operation of the component of the vehicle, and a receiver to receive a set of heartbeat messages from a set of neighboring vehicles, each heartbeat message received from a neighboring vehicle includes a time of transmission of the heartbeat message, a location of the neighboring vehicle and a velocity of the neighboring vehicle. The receiver receives each heartbeat message at a corresponding receipt time measured using the clock of the vehicle.

Abstract: A control system for controlling a plant includes a local controller to generate local control commands according to a local control policy to control the plant and a receiver to received remote control commands generated by a remote controller to control the plant according to remote control policy. Local and remote control policies are designed for the same control objective and time resolution such that there is the same Lyapunov function having a negative definite time derivative for controlling the plant according to first or second control policies. The plant is controller with either remote or local control commands in dependence of a success of receiving a remote control command for a time step of the control.

Abstract: An encoder of a terahertz (THz)-based absolute positioning system used for decoding patterns from THz-band measurements. The encoder includes a scale with a multi-layer reflective/transmissive structure having a matrix with rows. Each row of the matrix corresponds to a plurality of patterns, such that each pattern is used to form a measurement. An emitter emits a THz waveform to the scale. A receiver is used to measure amplitudes of the THz waveform reflected from the scale. A memory stores data including predetermined positions of the emitter based on the patterns of the layers from the scale. Wherein one or more processors can determine a position of the emitter from the measurements of the amplitudes received by the receiver, based on the stored data. An output interface can be used to render the position of the emitter.

Abstract: A multi-satellite system includes a first satellite and a second satellite configured to be separated in a predetermined distance between the satellites after being launched into space, and a tether including an optical fiber having first and second ends, wherein the first end is connected to the first satellite and the second end is connected to the second satellite, wherein a length of the tether is greater than the predetermined distance. In this case, the first satellite includes an optical transceiver connected to the first end of the optical fiber to provide a communications link to the second satellite, a spool containing partial winding of the tether, and a free space optical transceiver to provide a first communications link to a first distant satellite.

Abstract: A system jointly controls vehicles according to traffic configuration of a zone of intersection of a first road and a second road. The intersection zone includes a sequencing zone and a control zone covering sections of the first and the second road in proximity to the intersection. The system groups vehicles traveling within the sequencing zone on the first and the second roads into a set of groups of the vehicles and prevents the vehicles of different groups to travel concurrently in the control zone such that the first vehicle of the following group cannot pass the last vehicle of the preceding group. The system determines motion trajectories for the vehicles of the same group traveling in the control zone on the first and the second roads to pass the intersection and transmits the motion trajectories to the corresponding vehicles.

Abstract: A communication system receives a jammed signal including a sequence of complex numbers encoding one or combination of symbols transmitted by multiple transmitters. The system transforms the sequence of complex numbers into an image of real numbers having at least two columns and multiple rows, with real values of real and imaginary parts of each complex number forming different columns but the same row of the first image, processes the image with a neural network trained to suppress the wideband signal in the received signal, and detects the symbols transmitted by the transmitters from the de jammed signal.

Abstract: A battery diagnostic system stores capacity degradation models for batteries of a specific type mapped to sets of battery cycle models formed by voltages and/or currents measured at different capacities. Each capacity degradation model is mapped to a set of battery cycle models associated with different battery capacities. The system, upon accepting measurements indicative of a battery cycle and a current capacity of the test battery, compares the battery cycle of the test battery with the battery cycle models of different capacity degradation models associated with a value of the battery capacity closest to the current capacity of the test battery to select a battery cycle model closest to the battery cycle of the test battery and the degradation capacity model mapped to the selected battery cycle model. The system estimates future degradation of the capacity of the test battery based on the retrieved capacity degradation model.

Abstract: A network of nodes includes data nodes and at least one sink node to exchange packets between the sink node and the data nodes in a multi-hop manner. The data nodes include a battery powered node (BPN) having a transceiver, a memory, and a battery to provide energy to components of the BPN. The BPN includes a processor to determine a sleep schedule of the BPN independently from the sleep schedules of other data nodes and independently from commands transmitted by the sink node. The processor of the BPN switches the transceiver ON and OFF according to the sleep schedule to form an active period and a sleep period of the BPN. Also, the processor partitions at least part of the active period into a receiving (RX) period and a transmission (TX) period and causes the transceiver to transmit the data packets only during the TX period.

Abstract: A networked control system for controlling at least one plant includes a receiver configured to receive a feedback signal indicative of a current state of a controlled variable of a plant over a wireless link and a controller configured to determine a control command based on a control error between a reference state of the controlled variable and the current state of the control variable. The system also includes a processor configured to determine, based on a function of the control error, a number of transmission times a packet with the control command needs to be transmitted over the wireless link, and a transmitter configured to transmit the packet over the wireless link the number of transmission times.

Abstract: A control system for controlling a plant includes a local controller to generate local control commands according to a local control policy to control the plant and a receiver to received remote control commands generated by a remote controller to control the plant according to remote control policy. Local and remote control policies are designed for the same control objective and time resolution such that there is the same Lyapunov function having a negative definite time derivative for controlling the plant according to first or second control policies. The plant is controller with either remote or local control commands in dependence of a success of receiving a remote control command for a time step of the control.

Abstract: A system for estimating a pose of a robot includes a particle filter to track the pose of the robot using particles that defining a probability of pose of the robot and a particle tuner to update the particles of the robot based on particles of neighboring robot. Upon receiving data indicative of relative pose between a pose of the robot and a pose of a neighboring robot, and particles of the neighboring robot, the particle tuner pairs an arbitrarily sampled particle of the robot with an arbitrarily sampled particle of the neighboring robot, determines a weight of the paired particles in reverse proportion to an error between a relative pose defined by the paired particles and the relative pose between the robot and the neighboring robot, and updates the particles of the robot in accordance to the weights of corresponding paired particles.

Abstract: A positioning system for tracking a position of a vehicle includes a receiver configured to receive phase measurements of satellite signals received at multiple instances of time from multiple satellites, and a memory configured to store a recurrent neural network trained to determine a position of the vehicle from a set of phase measurements in a presence of noise caused by a multipath transmission of at least some of the satellite signals at some instances of time. A processor of the positioning system is configured to track the position of the vehicle over different instances of time by processing the set of phase measurements received at each instance of time with the recurrent neural network to produce the position of the vehicle at each instance of time.

Abstract: Methods and systems for predicting an unknown voltage of a battery corresponding to a future current demand for at least one time instant. The method including determining parameters of a first joint Gaussian distribution of a set of historical values of the voltage prediction of the battery from a set of historical measured physical quantities of the state of the battery stored in the memory. Determining a second joint Gaussian distribution of the unknown voltage and the set of historical values of the voltage prediction of the battery, based on a present measured physical quantities of the battery, the set of historical measured physical quantities and the determined parameters of the first joint Gaussian distribution. Determining a mean and a variance of an unknown voltage of the battery from the second joint Gaussian distribution, to obtain the predicted unknown voltage of the battery.

Abstract: A receiver for use in a wireless communication system to receive signals transmitted over a wireless channel. The receiver includes a plurality of radio-frequency (RF) chains coupled a plurality of antennas. Each RF chain has at least one-bit analog-to-digital converter (ADC) to convert each measurement of an analog signal received by the antenna into at least one bit of information representing a result of a comparison of the measurement with a randomly selected threshold to produce a sequence of bits and a corresponding sequence of thresholds. Each bit in the sequence of bits represents a relative value of the measurement of the analog signal with respect to a threshold from the corresponding sequence of thresholds. A processor coupled to the plurality of RF chains estimates parameters of the wireless channel using the sequences of bits and the corresponding sequences of thresholds received from the plurality of RF chains.