METHOD OF OPTIMAL DETECTION OF PULSE SIGNALS WITH NONMODULATED CARRIER FREQUENCY Russian patent published in 1995 - IPC

FIELD: radio engineering. SUBSTANCE: signal is received when providing excess transmission band ΔF of the receiver in comparison with width of basic spectrum of pulse signal at duration τ_i,, where ΔF is higher or equal to 10/τ_i,. Signal received is delayed for time τ_к=τ_i to satisfy the condition f_sτ_к= d1/2 ,, where d is integer, f_s is signal carrier frequency. Nondelayed and delayed signals are summed and filtered subsequently in quasioptimal filter. Transmission band of the filter should satisfy ΔF_к relation, where ΔF_к is much lower than 1/τ_i,, and central frequency satisfies f_р=f_s relation. Envelope is separated and compared with threshold level. If threshold level is beaten, the signal is detected. EFFECT: improved noise immunity. 3 dwg