弹载双基前视SAR构型参数优化设计方法  

Configuration parameter optimization design method of MBFL-SAR

作　　者：郭媛 索志勇[1] 王婷婷 丁智泉 GUO Yuan;SUO Zhiyong;WANG Tingting;DING Zhiquan(National Laboratory of Radar Signal Processing,Xidian University,Xi’an 710071,China;Sichuan Aerospace Electronic Equipment Research Institute,Chengdu 610100,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,陕西西安710071 [2]四川航天电子设备研究所,四川成都610100

出　　处：《系统工程与电子技术》2023年第11期3449-3454,共6页Systems Engineering and Electronics

摘　　要：弹载双基前视合成孔径雷达(missile-borne bistatic forward-looking synthetic aperture radar,MBFL-SAR)构型,可实现接收平台俯冲段全程二维高效高分辨成像。相比于机载、星载双基构型,弹载双基构型具有不易受攻击、轨迹设计灵活、合成孔径时间短等优势。但是由于导弹机动性较强,对成像时间要求较高,这使得传统的机载/星载双基构型设计方法不适用于弹载前视双基构型。本文首先在MBFL-SAR几何模型基础上,基于梯度方法分析该构型的分辨率计算方法;然后,结合二维分辨率的特点,分析构型参数对二维分辨率的影响规律,提出一种参数降维的构型设计方法,在提高构型参数设计效率的同时,能够有效缩短成像时间;最后,通过基于典型工作参数的仿真实验验证了该方法的有效性。Missile-borne bistatic forward-looking synthetic aperture radar(MBFL-SAR),can achieve efficiently two-dimensional high-resolution imaging during the whole terminal diving period of the receive platform.Compared to the airborne/spaceborne bistatic configuration,the missile-missile bistatic configuration has advantages of not easily attacked,the trajectory is flexible and the synthetic aperture time is short.However,due to the missile’s strong maneuverability and high requirements for imaging time,the traditional airborne/spaceborne bistatic configuration design method is not suitable for MBFL-SAR.Based on the geometric model of MBFL-SAR imaging,this paper first analyzes the resolution calculation method based on gradient method.Then,combined with the characteristics of the two-dimensional resolution,the influence of the configuration parameters on the two-dimensional resolution is analyzed,and the configuration design method by reducing the dimensions is proposed,while improving the efficiency of configuration parameter design,it can effectively shorten the imaging time.Finally,the effectiveness of the proposed method is verified by simulation experiments based on typical working parameters.

关 键 词：弹载双基前视合成孔径雷达 构型设计 参数降维 

分 类 号：TN95[电子电信—信号与信息处理]