Alternative Optical Architectures for Multichannel Adaptive Optical Processing.

摘要

This final report describes the continued design and hardware implementation of an acousto-optic (AO) multichannel adaptive optical processor (MADOP) for application to the cancellation of multipath jamming interference in advanced surveillance radars. The work described in this report was performed for the Photonics Center at Rome Laboratory and represents the second year of Dynetics support on this project. The objective of this effort was the continued fabrication and performance characterization of a multichannel adaptive system that can perform cancellation of multiple wideband (10 MHz) interference sources in the presence of multipath. Specific activities included (1) the simulation of convergence performance of the MADOP algorithms against a variety of multipath conditions, (2) the reconfiguration of the multichannel AO time-integrating correlator for improved stability, (3) the refinement of the AO tapped delay line to achieve better frequency response, (4) the development of the radio frequency interface between the two AO subsystems, and (5) the design and development of a single-loop electronic canceller for improved phase stability after the AO tapped delay line system.... Adaptive processing, Acousto-Optics, Optical signal processing.