Communications: directive radio wave systems and devices (e.g. – Clutter elimination
Reexamination Certificate
2006-04-11
2006-04-11
Sotomayor, John B. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Clutter elimination
C342S162000, C342S089000, C342S095000, C342S108000, C342S148000
Reexamination Certificate
active
07026981
ABSTRACT:
Analysis of electromagnetic (or acoustic) multipath propagation inventively confines the assessment of multipath propagation to a “surface interactive region” (“SIR”), intermediate the target and transmitter and/or the target and receiver. The down range time of the propagation, translatable to range distance, is related to error associated with such restriction. A SIR scope is selected commensurately with acceptable error. Jointly disclosed (practicable therewith or thereapart) is inventive focus upon the transmitter-to-target propagation (transmitted propagation reaching target via both direct pathway and forward scattered pathway) and the target-to-receiver propagation (re-transmitted propagation reaching receiver via both direct pathway and forward scattered pathway). Transmitter-to-target propagation is calculated using conventional multipath modeling technique. The target's overall scattered field is calculated using the calculated transmitter-to-target propagation in conjunction with qualitative electromagnetic/acoustic target information. Target-to-receiver propagation is calculated using conventional multipath modeling technique and/or the reciprocity principle as applied to the calculated transmitter-to-target propagation.
REFERENCES:
patent: 3189900 (1965-06-01), Raabe
patent: 3924236 (1975-12-01), Earp et al.
patent: 4005421 (1977-01-01), Dax
patent: 4060807 (1977-11-01), Barton
patent: 4316191 (1982-02-01), Sawatari et al.
patent: 4435709 (1984-03-01), Kipp
patent: 4472718 (1984-09-01), Ohashi et al.
patent: 4553146 (1985-11-01), Butler
patent: 5003313 (1991-03-01), Doriath
patent: 5270718 (1993-12-01), DiDomizio
patent: 5710977 (1998-01-01), Nakazawa
patent: 6175811 (2001-01-01), Tekinay
patent: 6272350 (2001-08-01), Tekinay
patent: 6567567 (2003-05-01), Levin et al.
“Multipath and ground clutter analysis for a UWB noise radar”, Dawood-N; Narayanan-R-M, IEEE-Transactions-on-Aerospace-and-Electronic-Systems (USA), vol. 38, No. 3, p. 838-53, Jul. 2002.
“A new signal subspace approach for angle fo arrival estimation in radar low-angle environment”, Gao Shi-wei; Bao Zheng, Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on Apr. 11-14, 1988 P(s):1232-1235 vol. 2.
“Direction finding in the presence of fully correlated specular multipath”, Ballance, W.P.; Jaffer, A.G. Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on Apr. 11-14, 1988 Page(s):2849-2852 vol. 5.
“Multi-resolution multi-frequency analysis of high range resolution sea reflections”, Rice, D.E., Radar Clutter and Multipath Propagation, IEE Colloquium on Apr. 17, 1989 Page(s):10/1-10/8.
“Radar performance in a maritime environment: single hit detection in the presence of multipath fading and non-Rayleigh sea clutter”, Tough, R.J.A; Baker, C.J.; Pink, J.M., Radar and Signal Proc., IEE Proceedings F, vol. 137, Issue 1, Feb. 1990 P(s):33-40.
“A spatial temporal dynamical model for multipath scattering from the sea”, Leung, H.; Lo, T., Geoscience and Remote Sensing, IEEE Transactions on, vol. 33, Issue 2, Mar. 1995 Page(s):441-448.
“Measurement and analysis of multipath by a rough surface reflector using a digital array antenna”, Bjorklund, S.; et al, Signal Processing and Its Applications, 1999. ISSPA '99. Procs of the Fifth Int'l Symposium on vol. 2, 1999 P(s):859-862.
“Investigation on low-angle tracking technique for HRR radar”, Shang She; Zhang Shouhong; Zhang Xiushe, Radar, 2001 CIE International Conference on, Proceedings2001 Page(s):839-842.
Kaiser Howard
Sotomayor John B.
The United States of America as represented by the Secretary of
LandOfFree
Surface interaction region methodology for delimiting... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface interaction region methodology for delimiting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface interaction region methodology for delimiting... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3579099