火星次表层探测雷达信号分析与处理  

Signal Processing and Analysis of Subsurface Detection Radar for Mars

作　　者：李小萍[1] 霍恩来 范明意[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《雷达科学与技术》2017年第6期617-622,629,共7页Radar Science and Technology

摘　　要：火星是太阳系八大行星之一,探测火星地面以及地表之下的液态水或者固态冰,是对火星探测活动最有意义的一项任务,而低频段雷达具有穿透星体表面的能力,是完成火星探测任务较好的选择。基于任务实际,从火星探测任务的原理出发,分析了火星次表层探测雷达工作方式,对火星次表层探测雷达回波进行仿真分析,基于平台水平和垂直向的误差对成像结果的主副瓣水平的影响,对星上实时处理流程以及算法容许的平台误差进行了计算机仿真,并给出了有用的结论。Mars is one of the eight planets in the solar system.Detecting liquid water or solid ice on and below Mars’s surface is one of the most significant tasks for Mars exploration.The low frequency radar has penetration capability,so it is a better choice for Mars exploration mission.Based on mission requirement and started with the principle of Mars exploration mission,the operating mode of a subsurface detection radar is researched.In addition,the radar echo is simulated and analyzed.Based on the influences of the main and sidelobe levels on the imaging results,the on-board real-time processing flow and the allowable platform error of the algorithm is simulated.The useful conclusions are given.

关 键 词：火星探测 次表层雷达 回波仿真 星上实时处理 

分 类 号：TN959.74[电子电信—信号与信息处理]