All-optical antenna array adaptive processing system

Paulo E. X. Silveira; Gregory Kriehn; Andrew M. Kiruluta; Samuel P. Weaver; Kelvin H. Wagner; Robert T. Weverka

doi:10.1117/12.364078

29 September 1999 All-optical antenna array adaptive processing system

Paulo E. X. Silveira, Gregory Kriehn, Andrew M. Kiruluta, Samuel P. Weaver, Kelvin H. Wagner, Robert T. Weverka

Proceedings Volume 3810, Radar Processing, Technology, and Applications IV; (1999) https://doi.org/10.1117/12.364078
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

We present an all-optical architecture for a fully adaptive antenna array processor capable of optimally processing the signals from very large arrays in the presence of high frequency and wideband signals. A modified version of the least mean square algorithm is employed using the BEAMTAP (Broadband and Efficient Adaptive Method for True-time-delay Array Processing) architecture. A dynamic photorefractive volume hologram is used for the adaptive weights and two cohered fiber arrays are used as tapped-delay-lines at the output and feedback paths, allowing for the processing of signals at bandwidths exceeding 10 GHz. The optical cohering of the fiber arrays is discussed and simulations are shown which describe the performance of the proposed architecture in the presence of broadband signals and multiple broadband jammers.

Citation Download Citation

Paulo E. X. Silveira, Gregory Kriehn, Andrew M. Kiruluta, Samuel P. Weaver, Kelvin H. Wagner, and Robert T. Weverka "All-optical antenna array adaptive processing system", Proc. SPIE 3810, Radar Processing, Technology, and Applications IV, (29 September 1999); https://doi.org/10.1117/12.364078

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