Patents by Inventor Michael C. Wicks

Michael C. Wicks 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: 5748143
    Abstract: A signal processing system applies space-time adaptive processing ("STAP") to an airborne surveillance Doppler radar comprised of a single-channel, rotating antenna. The STAP substantially improves signal-to-interference-plus-noise ratio ("SINR"), thereby improving the detection of weak targets.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: May 5, 1998
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: William L. Melvin, Jr., Michael C. Wicks
  • Patent number: 5706013
    Abstract: Apparatus and method for improving detection of targets in a radar system that employs adaptive filtering. A nonhomogeneity detector eliminates nonhomogeneous signals from the population of signals received. An adaptive filter weight controller estimates covariance matrices from only homogenous signals. Thus the apparatus and method improves the probability of detecting the presence or absence of a target at the same time that it decreases the probability of a false alarm by improving the performance of an adaptive filter. Though developed for airborne radar, the apparatus and method may be applied to the processing of any image.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: January 6, 1998
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: William L. Melvin, Michael C. Wicks, Pinyuen Chen
  • Patent number: 5657022
    Abstract: Range-Doppler ambiguity is eliminated from an ultra-wideband radar system by transmitting an ultra-wideband chirped pulse towards a moving target, and mixing it with the doppler-shifted chirped pulse which is received as a target echo return signal. Multioctave radar tracing systems can potentiality track stealth aircraft without ambiguity since pulses containing many frequencies can defeat narrow-band radar absorbing material coatings. The unambiguous range-doppler signal processing method mixes the chirped pulse to yield an instantaneous Doppler frequency (which indicates target velocity) and a rate of change in the instantaneous Doppler frequency (which indicates target acceleration).
    Type: Grant
    Filed: November 17, 1992
    Date of Patent: August 12, 1997
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Paul Van Etten, Michael C. Wicks
  • Patent number: 5499030
    Abstract: An artificial intelligence system improves radar signal processor performance by increasing target probability of detection and reducing probability of false alarms in a severe radar clutter environment. This utilizes advances in artificial intelligence and expert systems technology for the development of data analysis and information (signal) processors used in conjunction with conventional (deterministic) data analysis algorithms to combine radar measurement data (including observed target tracks and radar clutter returns from terrain, sea, atmospheric effects, etc.) with topographic data, weather information, and similar information to formulate optimum filter coefficients and threshold tests. Present fielded radar systems use one CFAR algorithm for signal processing over the entire surveillance volume. However, radar experiments have shown that certain CFAR algorithms outperform others in different environments.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: March 12, 1996
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Michael C. Wicks, William J. Baldygo, Jr., Russell D. Brown
  • Patent number: 5351053
    Abstract: A radar system that includes an ultra wideband radar signal processor for electronically scanned arrays that utilizes frequency offset generation (FOG) to achieve beam steering as compared with phase shift and time delay techniques of conventional radars. The device comprises a transmit antenna, a chirp generator connected to the transmit antenna and a first summing circuit, a receiver antenna connected to the first summing circuit, a Doppler de-ramping chirp circuit connected to a second summing circuit, the output of the second summing circuit connected to an amplitude and weighting circuit and the output of the amplitude circuit connected to a spectrum analyzer of a Fast Fourier Transform (FFT) circuit. The signal processing consists of mixing the target returns with the transmitted signal to obtain a video beat note signal. This video beat note signal is mixed with a Doppler de-ramping chirp waveform which is matched to the desired target velocity.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: September 27, 1994
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Michael C. Wicks, Russell D. Brown
  • Patent number: 5068671
    Abstract: A broadband multi-element antenna having desirable phase, standing wave and polarization characteristics is disclosed. The antenna is arranged as a plurality of airfoil shaped elements located in radial planes about a central axis with the element peripheries collectively defining a horn shaped surface--centrally disposed of which is a ground plane member of preferably truncated conical shape which includes electrical feeding arrangements having in phase and out of phase element coupling. The antenna is suitable for radar, satellite, and other precision uses including military applications.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: November 26, 1991
    Assignee: The United States of America as representated by the Secretary of the Air Force
    Inventors: Michael C. Wicks, Paul V. Etten
  • Patent number: 5061934
    Abstract: A system is disclosed for use with radar systems so as to reduce the dynamic range requirement of the analog to digital converter through analog clutter cancellation prior to digitization. Clutter return estimates are formulated via modern digital signal processing techniques, converted to analog representation, and subtracted from the received waveform. Typically, the MTI cancellation is performed on the quadrature components of the received signal. The complex residue is then processed for target detection. This quadrature processing is not illustrated in the figures. In practice, sampling the received waveform prior to baseband down conversion, at an intermediate frequency, is also feasible. Digital synchronous detection and coherent MTI processing are then implemented in the digital signal processor. Rather than employ a radar signal processor which is either all analog or all digital it is beneficial to utilize hybrid schemes which capitalize on the advantages of both.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: October 29, 1991
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Russell D. Brown, Donald D. Weiner, Michael C. Wicks