RECEIVER OF ADAPTIVE DISCRIMINATION OF DISCRETE SIGNALS Russian patent published in 1994 - IPC

FIELD: radio engineering. SUBSTANCE: receiver of adaptive discrimination of discrete signals has high-frequency part, two symmetric and frequency-spaced channels 1 and 11, search and synchronization unit 16, pseudorandom code generator 7, comparator 15. Receiver is supplemented with units providing for measurement of power of noises during time periods free from presence of elements of signals in given frequency channel and for subsequent formation of nonlinear weight factors. Input of frequency synthesizer 17 is connected to second output of pseudorandom code generator 7 and its output is linked to one of inputs of intermediate frequency mixer 18 which second input is coupled to output of wide-band filter 4. Output of intermediate frequency mixer 18 is connected via band-pass filter 19 to input of squarer 20 which output is coupled to inputs of integrators 21, 22 connected in parallel. Their controlling inputs are connected to outputs of control unit 22 which controlling input is linked to first output of search and synchronization unit 16. Output of each integrator 21 is connected via control unit 22 to input of former 23 which output is coupled to divider and output divider is connected to multipliers via limiter. EFFECT: enhanced noise immunity under effects of concentrated interference.