Communications: directive radio wave systems and devices (e.g. – Determining distance – With pulse modulation
Reexamination Certificate
2006-01-24
2006-01-24
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
With pulse modulation
C342S021000, C342S128000, C342S130000, C342S132000, C342S175000, C342S194000, C342S195000, C342S196000, C342S200000, C342S201000, C342S202000
Reexamination Certificate
active
06989782
ABSTRACT:
Methods and apparatus are provided for radar systems using multiple pulses that are shorter than the expected range delay extent of the target to be imaged. In one implementation, a method for performing radar includes the steps of: transmitting a plurality of pulses, each pulse having a different center frequency and a time duration shorter than an expected range delay extent of a target, wherein a total bandwidth is defined by a bandwidth occupied by the plurality of pulses; receiving reflections of the plurality of pulses; and performing pulse compression on the received pulse reflections to generate a detection signal having a radar resolution approximately equivalent to the transmission and reception of a single pulse having the total bandwidth. In preferred form, the pulses comprise ultrawideband (UWB) pulses each occupying a sub-band of the overall system bandwidth.
REFERENCES:
patent: 3299427 (1967-01-01), Kondo
patent: 3772697 (1973-11-01), Ross
patent: 3889261 (1975-06-01), Sirven
patent: 3896434 (1975-07-01), Sirven
patent: 3945012 (1976-03-01), Cooper
patent: 3987285 (1976-10-01), Perry
patent: 4309703 (1982-01-01), Blahut
patent: 4379295 (1983-04-01), Lewis et al.
patent: 4450444 (1984-05-01), Wehner et al.
patent: 4562438 (1985-12-01), Rouse et al.
patent: 4566010 (1986-01-01), Collins
patent: 4626853 (1986-12-01), Lee et al.
patent: 4651152 (1987-03-01), Harmuth
patent: 4914441 (1990-04-01), Brookner
patent: 4983979 (1991-01-01), McKenzie
patent: 5095312 (1992-03-01), Jehle et al.
patent: 5239309 (1993-08-01), Tang et al.
patent: 5345471 (1994-09-01), McEwan
patent: 5361070 (1994-11-01), McEwan
patent: 5376939 (1994-12-01), Urkowitz
patent: 5389933 (1995-02-01), Golinsky
patent: 5414428 (1995-05-01), Gallagher et al.
patent: 5440311 (1995-08-01), Gallagher et al.
patent: 5442359 (1995-08-01), Rubin
patent: 5499029 (1996-03-01), Bashforth et al.
patent: 5523760 (1996-06-01), McEwan
patent: 5543799 (1996-08-01), Heger
patent: 5592170 (1997-01-01), Price et al.
patent: 5659320 (1997-08-01), Pouit
patent: 5815111 (1998-09-01), Gouenard et al.
patent: 5867117 (1999-02-01), Gogineni et al.
patent: 5943004 (1999-08-01), Groenenboom et al.
patent: 5977905 (1999-11-01), Le Chevalier
patent: 6177903 (2001-01-01), Fullerton et al.
patent: 6208248 (2001-03-01), Ross
patent: 6208285 (2001-03-01), Burkhardt
patent: 6225941 (2001-05-01), Gogineni et al.
patent: 6225943 (2001-05-01), Curley et al.
patent: 6400307 (2002-06-01), Fullerton et al.
patent: 6778603 (2004-08-01), Fullerton et al.
patent: 2003/0085766 (2003-05-01), Rogerson et al.
patent: 2003/0099299 (2003-05-01), Rogerson et al.
patent: 2003/0202537 (2003-10-01), Rogerson et al.
patent: 2004/0008729 (2004-01-01), Rogerson et al.
patent: 2004/0028011 (2004-02-01), Gehring et al.
patent: 2004/0028012 (2004-02-01), Walker et al.
patent: 2004/0048574 (2004-03-01), Walker et al.
Gill, Gurnam Singh,Ultra-Wideband Radar Using Fourier Synthesized Waveforms, IEEE Transactions on Electromagnetic Compatibility, May 2, 1997, pp. 124-131, vol. 39, IEEE.
Harris, Fredric J.,On The Use Of Windows For Harmonic Analysis With the Discrete Fourier Transform, Proceedings of the IEEE, Jan. 1, 1978, pp. 51-83, vol. 66, IEEE.
Park, Joongsuk et al.,A New Millimeter-Wave Step-Frequency Radar Sensor For Distance Measurement, IEEE Microwave and Wireless Components Letters, Jun. 6, 2002, pp. 221-222, vol. 12, IEEE.
Rihaczek, August W.,Principles Of High-Resolution Radar, 1969, Chapter 7, pp. 226-255.
Wehner, Donald R.,High-Resolution Radar, Second Edition, 1995, pp. 149-161, Artech House, Boston, London.
Askar Naiel K.
Furuno David S.
Rogerson Gerald D.
Walker Michael L.
Fitch Even Tabin & Flannery
General Atomics
Gregory Bernarr E.
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