Patents by Inventor Pat Sankar

Pat Sankar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11047953
    Abstract: A target detection and/or high resolution RF system is provided herein in which the resolution of a legacy target angle detection (direction of arrival) system is improved without any change to the existing hardware of the legacy target detection system. Rather, the target detection and/or high resolution RF system can apply virtual aperture postprocessing to reflected signals to achieve improvements in the detection of one or more targets.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: June 29, 2021
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Patent number: 10139483
    Abstract: A hybrid pulse compression RF system is provided herein in which an enhanced noise waveform and a hybrid waveform are generated to detect a target. For example, the system includes a signal generator that generates an LFM waveform and an enhanced waveform in sequence such that a transmitter of the system transmits the waveforms in the generated sequence in a direction of a possible target. The enhanced waveform may be a partially randomized version of the LFM waveform. If a target is present, the waveforms reflect off the target and are captured by the system in the sequence in which the originally generated waveforms are transmitted. Once captured, the reflected waveforms are processed by the system to generate a hybrid waveform for display such that the range and Doppler resolution and detection capabilities are significantly superior to the state of the art LFM or noise waveform RF systems.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: November 27, 2018
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Patent number: 10070825
    Abstract: Systems and methods of optimal pulse compression are described. A pulse compression system can include an operations component that can receive a first signal, transmit the signal toward a target, and receive a reflected signal. A processor can correlate the received signal with an optimized signal in order to generate an image, the optimized signal based on an impulse response function of the operations component. The optimized signal can be the first signal. The optimized signal can be a third signal separate from the first signal.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: September 11, 2018
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Publication number: 20180224535
    Abstract: A hybrid pulse compression RF system is provided herein in which an enhanced noise waveform and a hybrid waveform are generated to detect a target. For example, the system includes a signal generator that generates an LFM waveform and an enhanced waveform in sequence such that a transmitter of the system transmits the waveforms in the generated sequence in a direction of a possible target. The enhanced waveform may be a partially randomized version of the LFM waveform. If a target is present, the waveforms reflect off the target and are captured by the system in the sequence in which the originally generated waveforms are transmitted. Once captured, the reflected waveforms are processed by the system to generate a hybrid waveform for display such that the range and Doppler resolution and detection capabilities are significantly superior to the state of the art LFM or noise waveform RF systems.
    Type: Application
    Filed: July 27, 2017
    Publication date: August 9, 2018
    Inventor: Pat Sankar
  • Patent number: 9759810
    Abstract: A hybrid pulse compression RF system is provided herein in which an enhanced noise waveform and a hybrid waveform are generated to detect a target. For example, the system includes a signal generator that generates an LFM waveform and an enhanced waveform in sequence such that a transmitter of the system transmits the waveforms in the generated sequence in a direction of a possible target. The enhanced waveform may be a partially randomized version of the LFM waveform. If a target is present, the waveforms reflect off the target and are captured by the system in the sequence in which the originally generated waveforms are transmitted. Once captured, the reflected waveforms are processed by the system to generate a hybrid waveform for display such that the range and Doppler resolution and detection capabilities are significantly superior to the state of the art LFM or noise waveform RF systems.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: September 12, 2017
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Publication number: 20160278714
    Abstract: Systems and methods of optimal pulse compression are described. A pulse compression system can include an operations component that can receive a first signal, transmit the signal toward a target, and receive a reflected signal. A processor can correlate the received signal with an optimized signal in order to generate an image, the optimized signal based on an impulse response function of the operations component. The optimized signal can be the first signal. The optimized signal can be a third signal separate from the first signal.
    Type: Application
    Filed: November 25, 2014
    Publication date: September 29, 2016
    Inventor: Pat Sankar
  • Patent number: 9277901
    Abstract: Systems and methods of optimal pulse compression are described. A method of determining an optimal pulse takes as an input a function of the impulse response of a transducer and produces a pulse optimized for transmission through that transducer. Images then produced with that transducer will have both superior range and spatial resolution.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: March 8, 2016
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Publication number: 20150196272
    Abstract: Systems and methods of optimal pulse compression are described. A method of determining an optimal pulse takes as an input a function of the impulse response of a transducer and produces a pulse optimized for transmission through that transducer. Images then produced with that transducer will have both superior range and spatial resolution.
    Type: Application
    Filed: November 14, 2014
    Publication date: July 16, 2015
    Inventor: Pat Sankar
  • Patent number: 8974390
    Abstract: Systems and methods of optimal pulse compression are described. A method of determining an optimal pulse takes as an input a function of the impulse response of a transducer and produces a pulse optimized for transmission through that transducer. Images then produced with that transducer will have both superior range and spatial resolution.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: March 10, 2015
    Inventor: Pat Sankar
  • Patent number: 8747321
    Abstract: A structured randomly permutated pulse compression system comprises an FM transmitter configured to receive an input signal and transmit an output signal. The FM transmitter is configured to modulate the frequency of the output signal by modulating the frequency of the output signal according to a structured random permutation of time samples of the input signal. At least one antenna interfaces with the FM transmitter. The FM receiver is configured to auto-correlate the output signal with a return signal.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: June 10, 2014
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Publication number: 20140114191
    Abstract: A structured randomly permutated pulse compression system comprises an FM transmitter configured to receive an input signal and transmit an output signal. The FM transmitter is configured to modulate the frequency of the output signal by modulating the frequency of the output signal according to a structured random permutation of time samples of the input signal. At least one antenna interfaces with the FM transmitter. The FM receiver is configured to auto-correlate the output signal with a return signal.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 24, 2014
    Inventor: Pat Sankar
  • Patent number: 8625643
    Abstract: A free electron laser system includes an undulator having a first and second series of magnets. The first and second series of magnets are substantially parallel to and spaced apart from each other to define a laser cavity between the magnets. An electron source emits an electron beam through the laser cavity. The magnets in the first and second series can have varying polarities. The magnets can be electromagnets with random phase distribution.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: January 7, 2014
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Patent number: 8581778
    Abstract: A non-linear FM pulse compression system includes a non-linear FM transmitter adapted to receive an input signal and transmit an output signal. The non-linear FM transmitter is adapted to modulate the frequency of the output signal by at least one of the following: increasing the frequency of the output signal as a logarithmic function of the frequency of samples in the input signal; modulating the frequency of the output signal in inversely proportional relationship to the frequency of samples in the input signal; and modulating the frequency of the output signal according to a random permutation of the frequency of the input signal. At least one antenna interfaces with the non-linear FM transmitter. A non-linear FM receiver interfacing with the at least one antenna. The non-linear FM receiver is adapted to auto-correlate the output signal with a return signal.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: November 12, 2013
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Patent number: 8514047
    Abstract: The embodiments of the invention generally relate to a novel magnet arrangement to further enhance the performance of the array. The new arrangement of magnets (for example, five configurations) can result in significantly much higher percentage gain in magnetic flux with respect to the largest magnetic flux of a component magnet, as compared to Halbach array configurations.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: August 20, 2013
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Patent number: 8514045
    Abstract: The embodiments of the invention generally relate to a novel magnet arrangement to further enhance the performance of the array. The new arrangement of magnets (for example, five configurations) can result in significantly much higher percentage gain in magnetic flux with respect to the largest magnetic flux of a component magnet, as compared to Halbach array configurations.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: August 20, 2013
    Assignee: Scidea Research, Inc.
    Inventor: Pat Sankar
  • Publication number: 20130142207
    Abstract: A non-linear FM pulse compression system includes a non-linear FM transmitter adapted to receive an input signal and transmit an output signal. The non-linear FM transmitter is adapted to modulate the frequency of the output signal by at least one of the following: increasing the frequency of the output signal as a logarithmic function of the frequency of samples in the input signal; modulating the frequency of the output signal in inversely proportional relationship to the frequency of samples in the input signal; and modulating the frequency of the output signal according to a random permutation of the frequency of the input signal. At least one antenna interfaces with the non-linear FM transmitter. A non-linear FM receiver interfacing with the at least one antenna. The non-linear FM receiver is adapted to auto-correlate the output signal with a return signal.
    Type: Application
    Filed: October 22, 2012
    Publication date: June 6, 2013
    Inventor: Pat Sankar
  • Publication number: 20130062983
    Abstract: The embodiments of the invention generally relate to a novel magnet arrangement to further enhance the performance of the array. The new arrangement of magnets (for example, five configurations) can result in significantly much higher percentage gain in magnetic flux with respect to the largest magnetic flux of a component magnet, as compared to Halbach array configurations.
    Type: Application
    Filed: November 12, 2012
    Publication date: March 14, 2013
    Applicant: SCIDEA RESEARCH, INC.
    Inventor: Pat Sankar
  • Publication number: 20130043752
    Abstract: The embodiments of the invention generally relate to a novel magnet arrangement to further enhance the performance of the array. The new arrangement of magnets (for example, five configurations) can result in significantly much higher percentage gain in magnetic flux with respect to the largest magnetic flux of a component magnet, as compared to Halbach array configurations.
    Type: Application
    Filed: September 7, 2012
    Publication date: February 21, 2013
    Applicant: STREAM POWER, INC.
    Inventor: Pat Sankar
  • Patent number: 8264314
    Abstract: The embodiments of the invention generally relate to a novel magnet arrangement to further enhance the performance of the array. The new arrangement of magnets (for example, five configurations) can result in significantly much higher percentage gain in magnetic flux with respect to the largest magnetic flux of a component magnet, as compared to Halbach array configurations.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: September 11, 2012
    Assignee: Stream Power, Inc.
    Inventor: Pat Sankar
  • Publication number: 20120209113
    Abstract: A non-linear FM pulse compression system includes a non-linear FM transmitter adapted to receive an input signal and transmit an output signal. The non-linear FM transmitter is adapted to modulate the frequency of the output signal by at least one of the following: increasing the frequency of the output signal as a logarithmic function of the frequency of samples in the input signal; modulating the frequency of the output signal in inversely proportional relationship to the frequency of samples in the input signal; and modulating the frequency of the output signal according to a random permutation of the frequency of the input signal. At least one antenna interfaces with the non-linear FM transmitter. A non-linear FM receiver interfacing with the at least one antenna. The non-linear FM receiver is adapted to auto-correlate the output signal with a return signal.
    Type: Application
    Filed: July 19, 2010
    Publication date: August 16, 2012
    Inventor: Pat Sankar