Interference Source Localization using GPS Antenna Arrays

K.W. Hayhurst, I.J. Gupta, A.J. O'Brien

Abstract:	A method is presented to estimate the DOA of the incident interfering signals using airborne GPS antenna arrays. The method yields a very good DOA estimate even when the array manifolds of the antenna are not known exactly. The method is based on the fact the bias in DOA estimates due to mismatch in the array manifolds varies randomly with the DOA of the incident signals. Thus, if one obtains multiple estimates of the DOA of a given signal source over a flight path where the location and orientation of the aircraft varies with respect to the interfering signal source then the statistics (mean and variance) of the estimated DOA can be used to obtain unbiased estimate of the signal source location. The accuracy of the method is established by many computer simulations.
Published in:	Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011 Catamaran Resort Hotel San Diego, CA
Pages:	357 - 364
Cite this article:	Hayhurst, K.W., Gupta, I.J., O'Brien, A.J., "Interference Source Localization using GPS Antenna Arrays," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 357-364.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In