Blind GPS Anti-jamming Based on the Multiple Parallel CM Array

People pay more and more attention to the issue of GPS (global positioning system) anti-jamming nowadays, and the research on blind GPS anti-jamming receiver has more practical significance. Aiming at this, a technique of blind GPS anti-jamming receiver based on constant modulus (CM) array is analyzed in detail, in which the CM property of GPS signal is utilized, and the paper specially gives the necessary condition and the implementation scheme. It points out that when extracting one satellite signal using one-stage CM array, the others can be considered as CM jammers, and a parallel CM array extracting multiple GPS signals is also proposed, and despreading data of one millisecond are used to decrease the computational complexity. The computer simulations indicate that various interference signals can be suppressed in this system, and the effect satisfies us.