Angle estimation in the presence of mainbeam interference
Abstract
Angle of arrival of a desired signal in a mainbeam interference environment can be estimated by incorporating adaptive array processing. Adapted sum and difference beams that suppress the undesired noise sources are used to determine the monopulse error curve. The resultant distorted error curve across the mainbeam tracking angle region is used directly for angle estimation. The CramerRao bound on the angle estimation error is derived with generalized assumptions on the signal characteristics. A Monte Carlo simulation is performed for the estimation procedure described, and the angle estimation error is then compared with the CramerRao bound. It is shown that good performance in angle measurement can be achieved with sufficient signaltonoise ratio and angular separation between the target and the interference sources.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 December 1989
 Bibcode:
 1989STIN...9018621L
 Keywords:

 Angles (Geometry);
 Error Analysis;
 Error Signals;
 Monte Carlo Method;
 Signal Distortion;
 Signal To Noise Ratios;
 Arrays;
 Environment Simulation;
 Estimates;
 Monopulse Radar;
 Noise Measurement;
 Tracking (Position);
 Communications and Radar