Angle estimation with adaptive arrays in external noise fields
Abstract
A method of estimating the angle of arrival of a signal at an array of sensors in an external noise environment is outlined. The development is based on a maximum likelihood estimator and leads naturally to adaptive sum and difference beams which null the external noise sources. An algorithm for estimating angle of arrival, based on the outputs of adaptively distorted sum and difference beams, is shown to perform well in the presence of sidelobe and/or main beam interference.
 Publication:

IEEE Transactions on Aerospace Electronic Systems
 Pub Date:
 March 1976
 DOI:
 10.1109/TAES.1976.308293
 Bibcode:
 1976ITAES..12..179D
 Keywords:

 Adaptive Control;
 Antenna Arrays;
 Maximum Likelihood Estimates;
 Noise Reduction;
 Radar Antennas;
 Antenna Design;
 Antenna Radiation Patterns;
 Electromagnetic Interference;
 Linear Arrays;
 Signal Distortion;
 Steerable Antennas;
 Communications and Radar