吉林大学学报(地球科学版) ›› 2017, Vol. 47 ›› Issue (2): 633-644.doi: 10.13278/j.cnki.jjuese.201702307
• 地球探测与信息技术 • 上一篇
习建军1,2, 曾昭发1, 黄玲3, 崔丹丹2, 王者江1
Xi Jianjun1,2, Zeng Zhaofa1, Huang Ling3, Cui Dandan2, Wang Zhejiang1
摘要: 阵列式观测是探地雷达系统研制和新型探测方法的一个重要发展趋势,而同形多源并发地下目标响应特征分析成为系统研制和数据处理研究的基础和前提。阵列式天线的多源并发信号及目标反射信号存在复杂的极化特性,但同时也包含更多目标特征的响应信息。本文针对基于似平面波探地雷达系统,分析了目标体在极化平面波照射下的响应特征,从多极化信号角度分析典型地下目标体形态特征;并采用时域有限差分正演分析方法,通过对阵列天线接收到的数据沿时间轴进行积分来获得目标在地表投影的分布情况,分析了一维及二维分布的收发天线阵列对目标的检测。研究成果表明,多极化综合特征分析能够有效改善目标检测的稳定性,提高目标响应信号的信噪比,减弱天线方向图和目标散射截面闪烁对数据剖面的影响,降低数据处理和解释的难度。
中图分类号:
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