The study of key techniques for adaptive frequency radar controlling system

Adaptive frequency radar controlling system is an important way against active suppressing jamming. The designs of system, jamming detect arithmetic, how to select the optimization frequency point and the jamming detect circuit is introduced in this paper. The controller used MCU and 74LS161 as the core. It finds the frequency points which have the least jamming by signal detection and estimation theory and frequency spectrum analysis. The MCU controls the transmitter to work in these frequency points for anti-jamming.