Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Reexamination Certificate
2006-01-10
2006-01-10
Issing, Gregory C. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
C342S465000
Reexamination Certificate
active
06985107
ABSTRACT:
This invention relates to a method and system for the radio location of CDMA and non-CDMA enabled transmitters within a reception zone. The invention exploits the superposition of antenna patterns that create complex and asymmetrical interference structures at very small scales. By randomly distributing a random antenna array of M elements across a two or three-dimensional surface, fine scale interference structures on the scale of ¼ the carrier wavelength are generated. Once the minimum number of antennas are placed, additional antennas will not improve the resolution. Such interference structures when sampled at ⅛ the carrier wavelength or greater yields unique spatial patterns with respect to a given antenna array geometry and transmitter location. The invention incorporates signature recognition (matching) and orthogonal sub-space projection estimators to derive location estimates of a radio transmitter.
REFERENCES:
patent: 4559605 (1985-12-01), Norsworthy
patent: 4728959 (1988-03-01), Maloney et al.
patent: 5444451 (1995-08-01), Johnson et al.
patent: 5969676 (1999-10-01), Tran et al.
patent: 6104344 (2000-08-01), Wax et al.
patent: 6112095 (2000-08-01), Wax et al.
patent: 6140964 (2000-10-01), Sugiura et al.
patent: 6259404 (2001-07-01), Parl et al.
patent: 6297773 (2001-10-01), Fullerton et al.
patent: 6388618 (2002-05-01), Stilp et al.
patent: 6504483 (2003-01-01), Richards et al.
patent: 000932049 (1999-07-01), None
Baum, Carl E., “Signature-Based Target Identification and Pattern Recognition,” IEEE Antennas and Propagation Magazine, vol. 36, no. 3, Jun. 1994, pp. 44-51.
Michal, Debra P. et al, “Multiple Target Detection for an Antenna Array Using Outlier Rejection Methods,” ICASSP-93, Apr. 1993, pp. 45-48, vol. 4.
Schmidt, Ralph O., “Multilinear Array Manifold Interolation,” IEEE Transactins on Signal Processing, vol. 40, no. 4, Apr. 1992.
Shahbazpanahi, S. et al., “Distributed Source Localization Using ESPRIT Algorithm”, IEEE Transactions on Signal Processing, vol. 49, no. 10, Oct. 2001, pp 2169-2178.
Kozick, R. J. et al., “Distributed Source Localization with Mutiple Sensor Arrays and Frequency-Selective Spatial Coherence”, IEEE Signal Processing Workshop on Statistical Signal and Array Processing, SSAP, 2000 IEEE, Los Alamitos, CA, USA 419-423.
Holme, S., “Sparse and Irregular Sampling in Array Processing” ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing, Jun. 5-9, 2000, Istanbul, Turkey, pp 3850-3853.
Wu, Q. et al., “UN-MUSIC and UN-CLE: An Application of Generalized Correclation Analysis to the Estimation of the Direction of Arrival of Signals in Unknown Correlated Noise”, IEEE Transactions on Signal Processing, vol. 42, No. 9, Sep. 1994, pp 2331-2343.
Schmidt, R., “Multilinear Array Manifold Interpolation”, IEEE Transactions on Signal Processing, vol. 40, No. 4, (Apr. 1992), pp. 857-866.
Schmidt, R., “Multiple Emmitter Location and Signal Parameter Estimation,” IEEE Transactions on Antennas and Propagation, vol. AP-34, No. 3, Mar. 1986, pp. 276-280.
Schmidt, R., “Multiple Source DF Signal Processing: An Experimental System,” IEEE Transactions on Antennas and Propagation, vol. AP-34, No. 3, Mar. 1986, pp. 281-290.
Anson Peter
Niezgoda George
Issing Gregory C.
Lotek Wireless, Inc.
Rankin, Hill Porter & Clark LLP
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