弹载双基前视SAR构型参数优化设计方法

doi:10.12305/j.issn.1001-506X.2023.11.10

系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (11): 3449-3454.doi: 10.12305/j.issn.1001-506X.2023.11.10

弹载双基前视SAR构型参数优化设计方法

郭媛¹^,², 索志勇¹^,*, 王婷婷¹^,², 丁智泉²

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

收稿日期:2022-02-24 出版日期:2023-10-25 发布日期:2023-10-31
通讯作者: 索志勇
作者简介:郭媛(1992—), 女, 工程师, 博士研究生, 主要研究方向为SAR系统设计与数据处理
索志勇(1979—), 男, 副教授, 博士, 主要研究方向为干涉SAR信号处理与应用
王婷婷(1989—), 女, 高级工程师, 博士研究生, 主要研究方向为雷达系统设计
丁智泉(1978—), 男, 高级工程师, 硕士, 主要研究方向为雷达系统设计

Configuration parameter optimization design method of MBFL-SAR

Yuan GUO¹^,², Zhiyong SUO¹^,*, Tingting WANG¹^,², Zhiquan DING²

1. National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China
2. Sichuan Aerospace Electronic Equipment Research Institute, Chengdu 610100, China

Received:2022-02-24 Online:2023-10-25 Published:2023-10-31
Contact: Zhiyong SUO

摘要/Abstract

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。

关键词: 弹载双基前视合成孔径雷达, 构型设计, 参数降维

Abstract:

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.

Key words: missile-borne bistatic forward-looking synthetic aperture radar (MBFL-SAR), configuration design, reduce the dimensions of parameters

中图分类号:

TN95

郭媛, 索志勇, 王婷婷, 丁智泉. 弹载双基前视SAR构型参数优化设计方法[J]. 系统工程与电子技术, 2023, 45(11): 3449-3454.

Yuan GUO, Zhiyong SUO, Tingting WANG, Zhiquan DING. Configuration parameter optimization design method of MBFL-SAR[J]. Systems Engineering and Electronics, 2023, 45(11): 3449-3454.

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参考文献 15

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参数	数值	参数	数值
B/MHz	100	V_R/(m/s)	[0 800-200]
f_c/ GHz	16	P_R/km	[0-9 8]
S/m²	10	\|R_R\|/km	12
$\phi_R /\left(^{\circ}\right)$	48.37	\|R_T\|/km	50
$\phi_T /\left(^{\circ}\right)$	36.87	\|V_T\|/(m/s)	1 500

序号指标	要求值	本文方法①	传统方法
序号指标	要求值	本文方法①	③	④	⑤
ρ_gr/m	-	2.24	3.44	2.60	3.62
ρ_ga/m	-	3.55	3.27	13.75	6.26
Ω/(°)	-	127.28	143.62	95.95	80.06
S/m²	10	9.99	18.96	35.94	23.01

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

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