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22 August 1988 Real Time Optical Processing Of Frequency Hopped Spread Spectrum Signal
Bahram Javidi
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This paper is an experimental investigation of the performance of a real-time spread spectrum optical signal processor. The technique developed here is used to detect large time bandwidth product spread spectrum signals transmitted by the frequency hopping method and can yield self bit synchronization. This real-time optical system can generate the two dimensional correlation distribution between the reference data and the input data at the output plane of the processor. The conversion of the spread spectrum data from the time domain to the space domain is performed by acousto-optic Bragg cells and charged coupled devices. The two dimensional correlation between the input data and the reference data is obtained by joint transform correlation. The spread spectrum processor consists of a real-time optical correlator. Experimental results obtained by the real-time spread spectrum optical processor for various frequency hopped signals are presented. Various methods of converting the time data to two dimensional code patterns are described.
© (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bahram Javidi "Real Time Optical Processing Of Frequency Hopped Spread Spectrum Signal", Proc. SPIE 0936, Advances in Optical Information Processing III, (22 August 1988);

Charge-coupled devices

Signal detection

Fourier transforms

Signal processing


Optical signal processing

Adaptive optics

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