噪声调相连续波雷达统计主旁瓣比推导和分析

Derivation and analysis of statistical mainlobe to sidelobe ratio of the noise phase modulated continuous wave radar

摘要: 噪声调相连续波雷达(Noise Phase Modulated Continuous Wave Radar, NPM- CWR)脉压输出旁瓣表现为具有随机特性的噪声基底, 通过对其统计规律的研究, 推导了NPMCWR的统计主瓣均方旁瓣比(Statistical Mainlobe to Mean Square Sidelobe Ratio, SMMSSR)和统计主瓣峰值旁瓣比(Statistical Mainlobe to Peak Sidelobe Ratio, SMPSR)的数学表达式.分析了NPMCWR的脉压输出统计主旁瓣比与脉压长度、目标多普勒、有效相移等参数之间的关系.数学表达式的计算结果与Monte-Carlo仿真结果很好地吻合, 验证了推导结论的正确性.

Abstract: The sidelobes of pulse compression of noise phase modulated continuous wave radar (NPMCWR) are shown as a noise floor with random characteristic. The mathematical expressions of statistical mainlobe to mean square sidelobe ratio(SMMSSR) and statistical mainlobe to peak sidelobe ratio (SMPSR) are deduced. The relationships between the mainlobe to sidelobe ratio and some parameters such as pulse compression length, Doppler frequency and effective phase shift are analyzed. The results calculated by the mathematical expressions are close to the Monte-Carlo simulation results so that verify the correction of the deduction results.