Communications: directive radio wave systems and devices (e.g. – With particular circuit – For frequency modulation
Reexamination Certificate
2006-12-19
2006-12-19
Sotomayor, John B. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
For frequency modulation
C342S202000, C342S203000, C342S204000, C342S107000, C342S108000, C342S132000, C342S134000, C342S145000
Reexamination Certificate
active
07151483
ABSTRACT:
A system and corresponding method for the concurrent operation of multiple radar systems on a common frequency and in the same geographical area includes a waveform generator that specifies certain operating parameters for the transmitted radar pulses. In a first instance, the carrier frequency can include an offset for each radar system. In a second instance, complementary codes can be used for the radar pulses such that each radar system operates with a unique code for substantially reducing the cross-talk between the radar systems. In another instance, both carrier frequency offset and complementary coded waveforms can be used to increase the number of radar systems that operate concurrently. Carrier frequency offset can also be used to combat range-wrap by using different carrier frequencies for adjacent radar pulses.
REFERENCES:
patent: 3290591 (1966-12-01), Byington
patent: 3731310 (1973-05-01), Rittenbach
patent: 4338604 (1982-07-01), Petitjean
patent: 4359736 (1982-11-01), Lewis
patent: 4513288 (1985-04-01), Weathers et al.
patent: 6405147 (2002-06-01), Fera
patent: 6822606 (2004-11-01), Ponsford et al.
patent: 7038618 (2006-05-01), Budic
patent: 2003/0025829 (2003-02-01), Barrick et al.
patent: 2003/0063108 (2003-04-01), Isono et al.
patent: 2004/0178951 (2004-09-01), Ponsford et al.
patent: 2005/0242985 (2005-11-01), Ponsford et al.
“Improvement in target detection performance of pulse coded Doppler radar based on multicarrier modulation with fast Fourier transform (FFT)”, Prasad, N.N.S.S.R.K.; Shameem, V.; Desai, U.B.; Merchant, S.N. Radar, Sonar and Navigation, IEE Procs—vol. 151, Issue 1, Feb. 2004 pp. 11-17.
“Noise radar using random phase and frequency modulation”, Axelsson, S.R.J.Geoscience and Remote Sensing, IEEE Transactions on vol. 42, Issue 11, Nov. 2004 pp. 2370-2384.
“High-speed, electronic arbitrary waveform generation using time-domain processing of ultrashort optical pulses”, Saperstein, R.E.; Alic, N.; Rokitski, R.; Fainman, Y. LEOS Summer Topical Meetings, 2005 Digest of the Jul. 25-27, 2005 pp. 219-220.
PCT Search Report of the ISA for PCT/US2005/014524 dated Oct. 31, 2005.
Written Opinion of the ISA for PCT/US2005/014524 dated Oct. 31, 2005.
Partial PCT Search Report received with invitation to Correct Pay Additional Fees in PCT/US2005/014524, dated Sep. 26, 2005.
Kretschmer et al.; “New Radar Pulse Compression Waveforms:” 1988 IEEE; 88 CH 2672-6/88/0000-0194; pp. 194-199..
Dizaji Reza M.
McKerracher Richard R.
Ponsford Anthony M.
Daly, Crowley & Mofford & Durkee, LLP
Raytheon Company
Sotomayor John B.
LandOfFree
System and method for concurrent operation of multiple radar... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for concurrent operation of multiple radar..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for concurrent operation of multiple radar... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3692766