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Research on DF Technique for UAV Signal

Aiming at the demand of DF to UAV signal for jamming guidance, this paper analyzes the characteristics of UAV signal, then provides an interferometer DF method of linear array deployment based on virtual baseline, and comes up with one phase stage-by-stage solving-ambiguity method based on FFT, which can effectively increase the correctness of phase calculation and algorithm stability. The simulation results of that algorithm indicate that when SNR=0dB, the DF accuracy of interferometer DF method based on virtual baseline can be 1.7° (r.m.s), which can satisfy the requirement for jamming guidance.