Adaptive Notch Filtering

A. VanderBugt

doi:10.1117/12.934996

23 December 1983 Adaptive Notch Filtering

A. VanderBugt

Proceedings Volume 0388, Advances in Optical Information Processing I; (1983) https://doi.org/10.1117/12.934996
Event: 1983 Los Angeles Technical Symposium, 1983, Los Angeles, United States

Abstract

Computer programs were written to simulate the performance of an adaptive optical filtering system that is implemented in the frequency domain. Since this system uses Bragg cells as both the delay line and the accumulator, the primary interest is on the effects of finite integration times within the accumulator. By tapering the contributions to the accumulator so that the values that leave the accumulator do not cause as much misadjustment to the weights, the performance of the system is significantly improved while maintaining the ability to respond to changing signal statistics. Several examples of the performance of the system in the presence of multiple jammers as a function of the number of taps, the length of the accumulator, the degree of accumulator tapering and the feedback gain are given.

Citation Download Citation

A. VanderBugt "Adaptive Notch Filtering", Proc. SPIE 0388, Advances in Optical Information Processing I, (23 December 1983); https://doi.org/10.1117/12.934996

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