Detection spread spectrum signals.

摘要

SYSTEM signal detection spread spectrum comprises two RECEIVERS spatially separated, a correlator, AS AN INTEGRATOR correlator time spent CELLS acousto-optic, which is connected to the outputs from both receptors to produce a signal representative of THE crosscorrelation function of the two signals spread spectrum, a filter arranged to transmit only the central part of the function crosscorrelation AND SIGNAL PROCESSOR FOR PRODUCING cross spectral density and determine the presence of SIGNAL SPECTRUM PROPAGATION. DIRECTION OF ARRIVAL OF SPECTRUM SIGNAL PROPAGATION TO DETERMINE MEASURING THE SLOPE ANGLE PHASE cross spectral density. CELLS CAN BE acousto-optic BRAGG CELLS. SIGNAL OUT ONE OF THE RECIPIENTS MAY APPLY TO A FIRST CELL BRAGG positioned to direct modulated light from a source LASER LIGHT, the output is passed then through a disperser BEAM TOWARDS A second cell BRAGG TO WHICH MAY APPLY SECOND output signal receiver, the output of the second CELL DETECTED THEN BRAGG a matrix photodetector. DEPARTURE OF THE SECOND BRAGG CELLS MAY BE PROVIDING OPTICAL spatially filtered imaging ADJUSTABLE positioned so that only transmitted APPLICABLE TO LIGHT THE CENTRAL PART OF crosscorrelation function. The processor can be used to demodulate signals to produce data for the central part of the crosscorrelation function and find Fourier transform of the data to produce CRUZADO spectrum density.