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报道了一类由二相编码信号与线性调频信号组合而成的新的脉冲压缩信号。导出了这类信号的表达式。通过理论分析和计算机模拟 ,给出了该类信号的模糊函数 (图 ) ,幅度谱特性 ,匹配滤波器输出波形 ,多普勒频移特性 ,有加权时的压缩脉冲时间旁瓣波形和低截获概率等方面的性能。分析证明 ,该类信号与线性调频信号或二相编码信号相比具有更好的低截获概率特性 ,其多普勒性能优于二相编码信号。
A new type of pulse compression signal, which is a combination of two-phase coded signal and chirp signal, is reported. Derived the expression of this type of signal. Through the theoretical analysis and computer simulation, the fuzzy function (Fig.), The amplitude spectrum characteristic, the matched filter output waveform, the Doppler shift characteristics, the sidelobe waveform and the low intercept Probability and other aspects of performance. The analysis proves that this kind of signal has better low-probability of intercept probability compared with chirp signal or two-phase coded signal, and its Doppler performance is better than that of two-phase coded signal.