Communications: directive radio wave systems and devices (e.g. – Clutter elimination – Mti
Patent
1997-02-06
1998-09-15
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Clutter elimination
Mti
342 99, 342108, 342115, 342145, 342189, 342202, 342203, 342197, 342 25, 367 90, 367100, 367103, G01S 1390, G01S 13526, G01S 1552
Patent
active
058085807
ABSTRACT:
A method and apparatus for preventing the occurrence of range ambiguities and Doppler ambiguities in both a radar and sonar environment. A series of N pulses are produced, each of which contains a number of contagious subpulses. Each of the subpulses exhibit a different frequency than the remaining subpulses in that particular pulse. Furthermore, the order of appearance of the subpulses in each of the pulses is unique with respect to the remaining pulses in the series. A matched filter receiver and Doppler processor are used to provide auto correlations and cross correlations to prevent the range ambiguities and Doppler ambiguities.
REFERENCES:
patent: H767 (1990-04-01), Kretschmer, Jr. et al.
patent: 3631490 (1971-12-01), Palmieri
patent: 4040057 (1977-08-01), Cross et al.
patent: 4106019 (1978-08-01), Alexander et al.
patent: 4328495 (1982-05-01), Thue
patent: 4353067 (1982-10-01), Mims
patent: 4566010 (1986-01-01), Collins
patent: 4602258 (1986-07-01), Sarfati
patent: 4727375 (1988-02-01), Lacomme
patent: 4730189 (1988-03-01), Siegel et al.
patent: 4746922 (1988-05-01), Prenat
patent: 4924231 (1990-05-01), Prenat
patent: 4933914 (1990-06-01), Feintuch et al.
patent: 5047784 (1991-09-01), Gerlach et al.
patent: 5151702 (1992-09-01), Urkowitz
patent: 5173706 (1992-12-01), Urkowitz
patent: 5293168 (1994-03-01), Faulkner
patent: 5442359 (1995-08-01), Rubin
Andrews, G.A. and S.L. Sheller, A Matched Filter Doppler Processor for Airborne Radar, Jul. 13, 1983, NRL Report 8700, Naval Research Laboratory, Washington, D.C.
Arcasoy, C.C. and B. Koc, "On Cross-Ambiguity Properties of Welch-Costas Arrays," pp. 1063-1071, IEEE Transactions on Aerospace and Electronic Systems, vol. 30, No. 4, Oct. 1994.
Costas, John P., "A Study of a Class of Detection Waveforms Having Nearly Ideal Range-Doppler Ambiguity Properties," pp. 996-1009, Proceedings of the IEEE, vol. 71, No. 8, Aug. 1984.
Drumheller, David Mark and Edward L. Titlebaum, "Cross-Correlation Properties of Algebraically Constructed Costas Arrays," pp. 2-10, IEEE Transactions on Aerospace and Electronic Systems, vol. 27, No. 1, jan. 1991.
Freedman, Avraham, and Nadav Levanon, "Staggered Costas Signals," pp. 695-702, IEEE Transactions on Aerospace and Electronic Systems, vol. AES-22, No. 6, Nov. 1986.
Golomb, Solomon W., and Herbert Taylor, "Construction and Properties of Costas Arrays," pp. 1143-1163, Proceedings of the IEEE, vol. 72, No. 9, Sep. 1984.
Levanon, Nadav, "Coded Radar Signals," pp. 145-165, Radar Principles, John Wiley & Sons, 1988.
Long, William H., David H. Mooney and William A. Skiltman, "Pulse Doppler Radar," Chap. 17, pp. 17.1-17.42, Radar Handbook.
Correspondence-"Costas Arrays with Small Number of Cross-Coincidences," pp. 109-113, IEEE transactions on Aerospace and Electronic Systems, vol. AES-25, No. 1, Jan. 1989.
LandOfFree
Radar/sonar system concept for extended range-doppler coverage does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radar/sonar system concept for extended range-doppler coverage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radar/sonar system concept for extended range-doppler coverage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-92685