Research of tracking interference suppression in FH system based on two-dimensional virtual space smoothing algorithm

The two-dimensional virtual space smoothing algorithm is derived employing the received signals of all array elements and their conjugate data based on the rectangular array. By constructing virtual sub-array to eliminate the correlation between the interference signal and the desired signal, the array aperture loss is reduced and the spectral resolution of space is improved. A frequency-hopping communication system with inhibition of tracking interference is designed by combining this algorithm with phase compensation. The theoretical analysis and simulation results show that the new system is good on the tracking interference suppression with a -50 dB interference rejection for the tracking rejection and has a good bit error rate characteristics at -3 dB strong interference environment.