随机变PRF和脉宽的无人机噪声SAR体制研究(英文)  

A Study on Noise SAR System for UAV with Random Variable PRF and Pulse Width

作　　者：常文胜[1,2] 陶海红[1] 胡学成[2] 阮婷 孙光才[1] CHANG Wensheng;TAO Haihong;HU Xuecheng;RUAN Ting;SUN Guangcai(National Laboratory of Radar Signal Processing,Xidian University,Xi'an 710071,China;Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,西安710071 [2]南京电子技术研究所,南京210039

出　　处：《现代雷达》2020年第6期7-14,29,共9页Modern Radar

摘　　要：无人机合成孔径雷达(SAR)的抗干扰性能是决定其能否适应现代战场环境的重要因素。为了提高SAR的抗干扰性能,提出了一种随机变脉冲重复频率(PRF)和脉宽的噪声SAR成像新体制。首先,在建立成像模型的基础上对成像算法进行了推导;然后,对随机PRF和随机脉宽的实现方法进行了分析;最后,通过对发射线性调频信号的传统SAR体制与随机变PRF和脉宽的噪声SAR体制在转发式干扰影响下的成像性能进行了仿真比较。仿真结果表明:文中提出的噪声SAR体制相比传统SAR体制具有较好的抗干扰性能。The anti-jamming performance of unmanned aerial vehicles(UAV) synthetic aperture radar(SAR) is an important factor, which determines whether it can adapt to the modern battlefield environment. In order to improve the anti-jamming performance of SAR, a new noise SAR system with random variable PRF and pulse width is proposed in this paper. Firstly, the imaging model is established, and then the imaging algorithm of the system is derived. Secondly, the realization methods of random PRF and random pulse width are analyzed. Finally, the traditional SAR system for transmitting LFM signals and the noise SAR system with random variable PRF and pulse width are respectively simulated under the repeater jamming, and the comparison of their imaging performance demonstrate that the proposed noise SAR system has better anti-jamming performance.

关 键 词：合成孔径雷达成像 随机变脉冲重复频率和脉宽 噪声合成孔径雷达体制 转发式干扰 抗干扰性能 

分 类 号：TN959.1[电子电信—信号与信息处理]