Performance analysis of the pseudo-random code binary phase modulated (PRC-BPM) fuze is analyzed in this thesis. Firstly, its principle is introduced in brief. On this basis, the signal to jamming ratio (SJR) gain of its receiver in noise FM jamming is deduced in detail with Doppler frequency. Then, the effect of Doppler frequency, pseudo-random code width, the of period pseudo-random code serial and aiming frequency deviation on its performance of anti noise FM jamming is analyzed. The results indicate that the PRC-BPM fuze has better performance of anti noise FM jamming.
The ambiguity function of Linear Frequency Modulated (LFM) pulse compression signal has been discussed widely, but the ambiguity function of LFM continuous waveform (CW) is rarely heard about. In this paper, the Single Periodic Ambiguity Function (SPAF) of Symmetric Triangular Frequency Modulated Continuous Waveform (STFMCW) is analytically derived in an explicit form, and its Periodic Ambiguity Function (PAF) is obtained by the relationship between SPAF and PAF. According to both theoretical analysis and simulated results, it is obtained that the dominant feature of the SPAF about STFMCW is the intact X-shaped diagonal ridge and two halves with 3 peaks, and a low pedestal which has a shape of the figure “8”. Using the frequency-difference of up-sweep and down-sweep respectively, the range-velocity coupling can be eliminated for a moving target. And any cuts of SPAF or PAF of STFMCW can be gotten.
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