3 May 2007 Direction finding of GPS receiver interference based on the nulling weights
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Proceedings Volume 6577, Wireless Sensing and Processing II; 657709 (2007); doi: 10.1117/12.719928
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States
Abstract
Most military applications of GPS require performing both jammer nulling and localization. While nulling can be achieved using adaptive gradient techniques applied to the input sampled data, high resolution direction of arrival estimation can precede using subspace and eigenstructure methods applied to the estimate of the covariance matrix. In this paper, we extract the jammer direction of arrival (DOA) information directly from the adaptive weights, in which case we assume interference nulling precedes interference localization. This high resolution DOA estimation approach based on available beamforming weight values leads to simplified receiver structure and allows a choice of IF or baseband processing as well as flexibility for analog, digital or mixed mode implementations.
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Jing Wang, Moeness Amin, "Direction finding of GPS receiver interference based on the nulling weights", Proc. SPIE 6577, Wireless Sensing and Processing II, 657709 (3 May 2007); doi: 10.1117/12.719928; https://doi.org/10.1117/12.719928
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KEYWORDS
Global Positioning System

Antennas

Nulling interferometry

Receivers

Satellites

Phased arrays

Telecommunications

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