Patents by Inventor Peter M. Brodie

Peter M. Brodie 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: 7239707
    Abstract: A transmitter employing a cryptographic algorithm and key generates and transmits a staggered pulse signal that includes a plurality of high-power pulses that are part of a pseudonoise (PN) code. The high-power pulses are separated by a group of low-power chips and the time interval between the high-power pulses is varied according to the cryptographic algorithm and key. A receiver, employing a corresponding cryptographic algorithm and key receives the signal and correlates it with a locally generated code that is modified according to the cryptographic algorithm and key to detect the phase of the received PN code. The receiver also can include a matched filter configured according to the cryptographic algorithm and key to detect the sequence of high-power pulses in the received signal.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: July 3, 2007
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Gene L. Cangiani, Peter M. Brodie, James M. Clark, Dennis McCrady
  • Publication number: 20030048901
    Abstract: A transmitter employing a cryptographic algorithm and key generates and transmits a staggered pulse signal that includes a plurality of high-power pulses that are part of a pseudonoise (PN) code. The high-power pulses are separated by a group of low-power chips and the time interval between the high-power pulses is varied according to the cryptographic algorithm and key. A receiver, employing a corresponding cryptographic algorithm and key receives the signal and correlates it with a locally generated code that is modified according to the cryptographic algorithm and key to detect the phase of the received PN code. The receiver also can include a matched filter configured according to the cryptographic algorithm and key to detect the sequence of high-power pulses in the received signal.
    Type: Application
    Filed: November 28, 2001
    Publication date: March 13, 2003
    Inventors: Gene L. Cangiani, Peter M. Brodie, James M. Clark, Dennis McCrady
  • Patent number: 6009376
    Abstract: The present invention is directed toward a navigation system and method for a high orbit spacecraft, which passively utilizes UHF signals carrying intersatellite ranging data transmitted by a constellation of satellites that travel in lower orbits around a celestial sphere. The navigation system enables the high orbit spacecraft to self locate its position relative to an earth centered coordinate frame and comprises a receiver for receiving the UHF signal, carrying the intersatellite ranging data and a Kalman or optimum filter coupled to the receiver for processing the ranging data received by the receiver and generating and updating spacecraft position data.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: December 28, 1999
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Peter M. Brodie, Laurence J. Doyle
  • Patent number: 5935196
    Abstract: The present invention is directed toward a navigation system and method for a high orbit spacecraft, which passively utilizes UHF signals carrying intersatellite ranging data transmitted by a constellation of satellites that travel in lower orbits around a celestial sphere. The navigation system enables the high orbit spacecraft to self locate its position relative to an earth centered coordinate frame and comprises a receiver for receiving the UHF signals carrying the intersatellite ranging data and a Kalman or optimum filter coupled to the receiver for processing the ranging data received by the receiver and generating and updating spacecraft position data.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: August 10, 1999
    Assignee: ITT Manufacturing Enterprises
    Inventors: Peter M. Brodie, Laurence J. Doyle
  • Patent number: 5490076
    Abstract: A system of making satellite-to-ground range measurements, carrying out communications between a ground station and a constellation of autonavigating satellites, and using these range measurements to improve navigation accuracy is disclosed. The system comprises an anchor that is in a fixed position relative to the earth. The anchor implements a filtering algorithm to arrive at solutions for the satellites' positions based on measured satellite positions and predicted satellite positions. Each time a new measurement is received by the anchor an update is generated. In this manner the system is capable of updating satellite positions at a greater rate than similar prior art systems, thereby, decreasing the transient response associated with satellite delta-v maneuvers and decreasing the quantity of data that must be exchanged by the anchor and the satellites.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: February 6, 1996
    Assignee: ITT Corporation
    Inventors: Harris C. Rawicz, Laurence J. Doyle, Peter M. Brodie