Inclined Geosynchronous Spaceborne–Airborne Bistatic SAR: Performance Analysis and Mission Design
Inclined Geosynchronous Spaceborne–Airborne Bistatic SAR: Performance Analysis and Mission Design
复制标题
倾斜地球同步星载—机载双基地SAR：性能分析和任务设计
DOI：
10.1109/tgrs.2015.2457034
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发表时间：
2016
影响因子：
8.2
通讯作者：
Yang Jianyu
中科院分区：
文献类型：
--
作者：
Pei Jifang;Li Zhongyu;Huang Yulin;Yang Jianyu
地球同步合成孔径雷达(GEO-SAR)为大范围、短重复周期的连续对地观测任务提供了新的机遇。GEO-SAR的独特特性为双基地观测应用提供了巨大的潜力。本文首先研究了地球同步双基地合成孔径雷达(GEO-BiSAR)的概念和优点。该系统由地球同步轨道照明器和机载接收器组成，如飞机或近空间飞行器。与单基地GEO-SAR系统相比，双基地结构可以提供更好的空间分辨率和更高的信噪比，而系统复杂度更低。在广义模糊函数的基础上，考虑地球静止轨道速度、地球自转和地球表面的时变特性，分析了空间分辨率特性。同时，利用积分方程法对双基地信噪比进行了分析。在本文中，GEO-BiSAR的任务设计旨在识别一组接收机飞行参数和双基地配置，以获得所需的空间分辨率和信噪比。基于特定应用背景的期望成像性能，将任务设计过程建模为非线性方程组(NES)。最后，提出了一种基于快速非支配排序遗传算法的任务设计方法来求解NES，并获得多个最优解来指导接收方的飞行任务。给出了任务设计过程的实例，验证了该方法的有效性。任务设计的结果可以方便地用于指导接收机飞行任务，以获得所需的成像性能，这在实际应用中是非常必要的。
Geosynchronous synthetic aperture radar (GEO-SAR) offers new opportunities for continuous Earth observation missions with large coverage and short revisit cycle. The unique features of GEO-SAR present huge potentials for bistatic observation applications. In this paper, the concept and advantages of GEO bistatic SAR (GEO-BiSAR) are first investigated. The system consists of a GEO illuminator and an airborne receiver, such as an airplane or a near-space vehicle. Compared with a monostatic GEO-SAR system, the bistatic configuration can provide finer spatial resolution and higher signal-to-noise ration (SNR) with less system complexity. The spatial resolution characteristics are then analyzed based on generalized ambiguity function, where the time-varying GEO velocity, Earth rotation, and ellipsoid Earth surface are taken into consideration. Meanwhile, the bistatic SNR is analyzed using the integration equation model. In this paper, the mission design for GEO-BiSAR aims at identifying a set of receiver flight parameters and bistatic configurations to obtain the desired spatial resolution and SNR. Based on the desired imaging performance of a specific application background, the mission design process is modeled as a nonlinear equation system (NES). Finally, a mission design method based on fast nondominated sorting genetic algorithm is proposed to solve the NES and obtain multiple optimal solutions to guide the receiver flight missions. Examples of the mission design process are given to validate the effectiveness of the proposed method. The results of the mission design can be conveniently used to guide the receiver flight mission for the desired imaging performance, which is highly desirable in practical applications.
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影响因子：
5.7
作者：
M. Sancer
通讯作者：
M. Sancer
影响因子：
8.2
作者：
FUNG, AK;LI, ZQ;CHEN, KS
通讯作者：
CHEN, KS
DOI：
10.1109/igarss.2012.6350601
发表时间：
2012-07
期刊：
2012 IEEE International Geoscience and Remote Sensing Symposium
影响因子：
--
作者：
J. R. Rodon;A. Broquetas;E. Varona;A. M. Guarnieri;F. Rocca
通讯作者：
J. R. Rodon;A. Broquetas;E. Varona;A. M. Guarnieri;F. Rocca
DOI：
--
发表时间：
2011-11
期刊：
2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)
影响因子：
--
作者：
Wang Yanfei;Wang Jingen;Z. Jianming;Ge Jia-long
通讯作者：
Wang Yanfei;Wang Jingen;Z. Jianming;Ge Jia-long
DOI：
10.1109/tgrs.2003.815405
发表时间：
2004-04
期刊：
IEEE Trans. Geosci. Remote. Sens.
影响因子：
--
作者：
Tzong-Dar Wu;Kun Shan Chen
通讯作者：
Tzong-Dar Wu;Kun Shan Chen