Adaptive array behavior with periodic phase modulated interference
Abstract
A least mean square adaptive array receiving a phase modulated interference signal is considered. The phase modulation is assumed to be periodic and to have finite bandwidth. Under these assumptions, determinations are made of the time-varying array weights, the modulation on the array output desired signal, and the time-varying output interference-to-noise ratio and signal-to-interference-plus-noise ratio. Numerical results describing the behavior of a 2-element adaptive array that receives an interference signal with sinusoidal phase modulation are presented. It is shown how each signal parameter (arrival angle, power, modulation index, and modulation frequency) affects the performance of the array.
- Publication:
-
IEEE Transactions on Aerospace Electronic Systems
- Pub Date:
- September 1987
- DOI:
- 10.1109/TAES.1987.310853
- Bibcode:
- 1987ITAES..23..602A
- Keywords:
-
- Adaptive Filters;
- Antenna Arrays;
- Electromagnetic Interference;
- Phase Modulation;
- Signal To Noise Ratios;
- Bit Error Rate;
- Feedback Control;
- Fourier Analysis;
- Least Squares Method;
- Phase Shift Keying;
- Time Dependence;
- Communications and Radar