噪声调频连续波的统计主旁瓣比

doi:10.3969/j.issn.1000-1093.2014.04.003

兵工学报 ›› 2014, Vol. 35 ›› Issue (4): 448-453.doi: 10.3969/j.issn.1000-1093.2014.04.003

噪声调频连续波的统计主旁瓣比

翁晓明，顾红，苏卫民

(南京理工大学电子工程与光电技术学院，江苏南京 210094)

收稿日期:2013-06-18 修回日期:2013-06-18 上线日期:2014-05-26
作者简介:翁晓明（1985—），男，博士研究生

Statistical Main Lobe-to-sidelobe Ratio of Noise Frequency Modulated Continuous Wave

WENG Xiao-ming， GU Hong， SU Wei-min

(School of Electronic Engineering and Optoelectronic Techniques，Nanjing University of Science and Technology，Nanjing 210094，Jiangsu，China)

Received:2013-06-18 Revised:2013-06-18 Online:2014-05-26

摘要/Abstract

摘要： 噪声调频连续波(NFMCW)信号的脉压输出具有表现为均匀噪声基底的随机旁瓣，通过对其统计规律的研究，推导了具有高斯型功率谱的NFMCW峰值旁瓣比(PSLR)及积分旁瓣比(ISLR)的数学表达式。研究结果表明：NFMCW的PSLR与相关时长、信号有效调制带宽及目标多普勒频率均有关；ISLR仅与相关时长以及目标多普勒频率有关，与信号有效调制带宽无关。Monte-Carlo实验结果与推导结果一致。

关键词: 雷达工程, 频率调制, 主旁瓣比, 噪声雷达, 脉冲压缩

Abstract: The matched filter output of noise frequency modulated continuous wave (NFMCW) has the random sidelobes which are presented as a uniform noise floor. The mathematical expressions of peak sidelobe ratio (PSLR) and integrated sidelobe ratio (ISLR) of NFMCW with Gaussian power spectral density are derived via the statistical regularities of the sidelobes. The results indicate that PSLR depends on correlation time length, signal effective modulation bandwidth and Doppler frequency. ISLR depends on correlation time length and Doppler frequency, and the signal effective modulation bandwidth is irrelevant. The Monte-Carlo experimental results are consistent with the derived results.

Key words: radar engineering, frequency modulation, main lobe-to-sidelobe ratio, noise radar, pulse compression

中图分类号:

TN957

翁晓明，顾红，苏卫民. 噪声调频连续波的统计主旁瓣比[J]. 兵工学报, 2014, 35(4): 448-453.

WENG Xiao-ming， GU Hong， SU Wei-min. Statistical Main Lobe-to-sidelobe Ratio of Noise Frequency Modulated Continuous Wave[J]. Acta Armamentarii, 2014, 35(4): 448-453.

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噪声调频连续波的统计主旁瓣比

Statistical Main Lobe-to-sidelobe Ratio of Noise Frequency Modulated Continuous Wave

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