Research on Adaptive Antenna Techniques III. Part 1. The Soft Constrained LMS Algorithm. Part 2. An Improved Adaptive Separator.

摘要

This research is concerned with separation of desired signals and jamming signals based on their relative power levels. The jammers are assumed to be strong compared to the desired signals, otherwise they are of no concern since other methods can be used to eliminate them. In PART 1, we develop 'soft constraint' adaptive algorithms that are suitable for power separation with adaptive arrays. Signals and jammers of various power levels can be separated as long as they differ in angle of arrival and/or frequency band. In PART 2, we develop single channel power separators with sharper thresholds than have been previously possible. Such systems can separate signals and jammers of various power levels as long as they differ in frequency band. The goal is to study sharp threshold phenomena in the simpler context of single channel operation with the expectation of final application to multichannel adaptive arrays. (Author)