| 摘要 |
FIELD: radio engineering. ^ SUBSTANCE: newly introduced in radio line on transmitting end are digital signal source, periodic video pulse sequence generating unit, code combination generating unit, code combination encoding unit, first adder, synchronizing pseudorandom sequence generator, frequency standard, and power amplifier; newly introduced on receiving end are high-frequency unit, frequency standard, clock and sync pulse generator, synchronizing pseudorandom sequence generator, synchronizing pseudorandom sequence search unit, N correlators, decision unit, encoded code combination memory device, code combination decoder, and adder. ^ EFFECT: enhanced noise immunity in digital signal reception and also enhanced informational and structural security. ^ 1 cl, 4 dwg |
