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 timevarying array weights, the modulation on the array output desired signal, and the timevarying output interferencetonoise ratio and signaltointerferenceplusnoise ratio. Numerical results describing the behavior of a 2element 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