Direction finding on spread spectrum signals using a time-integrating acousto-optic correlator

Warren Houghton; Christopher D. Reeve

doi:10.1117/12.243146

12 June 1996 Direction finding on spread spectrum signals using a time-integrating acousto-optic correlator

Warren Houghton, Christopher D. Reeve

Author Affiliations +

Proceedings Volume 2754, Advances in Optical Information Processing VII; (1996) https://doi.org/10.1117/12.243146
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

A computer simulation and experimental results are presented to show that use of a time integrating acousto-optic correlator can enable the detection and high resolution direction finding of very low power spread spectrum signals. The correlator operates on the outputs of two spatially separated receivers and the output ccf (cross correlation function) is windowed before the Fourier transform is taken to generate the 'time domain filtered cross spectral density' (TDFCSD). Detection is achieved by threshold detection within the amplitude of this TDFCSD, while direction finding is achieved by phase slope estimation.

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Warren Houghton and Christopher D. Reeve "Direction finding on spread spectrum signals using a time-integrating acousto-optic correlator", Proc. SPIE 2754, Advances in Optical Information Processing VII, (12 June 1996); https://doi.org/10.1117/12.243146

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