Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1992-04-30
1993-11-16
Hellner, Mark
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342378, H01Q 322
Patent
active
052627896
ABSTRACT:
A phased array source identification receives signals from remote sources and determines direction of arrival angles and the respective powers of coherent electromagnetic signals for the purpose of spatial localization and identification of relatively low power coherent sources in the presence of other coherent sources of relatively large signal power. The system employs covariant analysis of the received signals followed by eigenanalysis to produce eigenvectors and eigenvalues. A superresolution algorithm creates array manifold vectors corresponding to source direction of arrival, that lie in the signal subspace of the eigenvectors. In radar applications low power sources correspond to targets, while the high power sources would correspond to jammers. The relative power of radar echoes contribute information relevant to the identification of real sources as opposed to false alarms. Other applications may include cellular telephone systems and sonar systems.
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U.S. Patent Application, "Small Target Doppler Detection System", Seth David Silverstein and Robert L. Nevin, Ser. No. 876,958 filed Apr. 30, 1992.
General Electric Company
Hellner Mark
Snyder Marvin
Zale Lawrence P.
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