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月基合成孔径雷达(Lunar Synthetic Aperture Radar,Lunar-SAR)能在较短的观测周期获得全球性的大尺度观测图像,其概念自被提出之后便引起了广泛的讨论和研究。介绍了月基SAR与传统星载、机载SAR的不同,分析了超长传输距离、月球半径、天体章动和平动等因素带来的影响,结合实际地月相对运动参数完成了月基SAR回波信号仿真。对回波仿真数据进行BP成像,成像结果验证了月基SAR的可行性。对本研究的贡献以及未来研究方向进行了总结。
Abstract：The concept of Lunar-SAR( Synthetic Aperture Radar) has been widely discussed and studied because it can obtain a wide observation subswath in a short time. This paper firstly introduces the difference between the Lunar-SAR and the traditional spaceborne or airborne SAR,and analyzes the influence of such factors as long distance of signal transmission,radius of moon,nutation and libration of celestial bodies,etc.Secondly,based on the actual parameters of the two-body motion between the earth and moon,this paper gives the echo simulation of Lunar-SAR.The BP imaging algorithm is used for the echo simulation data,and the system feasibility is verified by the imaging results.Finally,the contribution of this paper and the future research directions are summarized at the last part of this paper.
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基本信息:
中图分类号:TN957.52
引用信息:
[1]谷昕炜,陈杰,杨威,等.月基SAR仿真成像研究[J].无线电工程,2018,48(02):88-91.
基金信息:
国家自然科学基金资助项目(61671043)
2018-02-05
2018-02-05