（北京遙感設備研究所，北京 100854）
摘要：探地雷達（GPR）是利用高頻電磁波來確定介質內部物質分布規律的一種探測雷達。在深空探測領域中，利用星載探地雷達進行星球次表層探測，已經成為了解星球次表層結構的重要途徑。但是，由于衛星運行速度的影響，使得星載探地雷達的成像具有多普勒效應，與靜止平臺下的成像有很大不同。歐洲航天局（ESA）與美國航天局（NASA）都已經利用星載探地雷達對火星進行了成功探測,但在國內該方面的研究還不多,尚處于起步階段。本文從一般探地雷達與星載探地雷達的成像區別入手，在兩種背景下對分層介質的探測進行了成像算法研究與回波仿真模擬，并對結果進行了解釋和分析。本文的結論也可以用于機載平臺等其它運動平臺的情況。
關鍵詞：探地雷達；星載；運動平臺；回波仿真
Imaging method and echo simulation for the space borne ground-penetrating radar
Haihan Wu，Danru Yu，Wei Li
（Beijing Institute of Remote Sensing Equipment，Beijing 100854）
chinesescientist@gmail.com
Abstract: Ground-penetration Radar(GPR) is a kind of detection radar using high frequency electromagnetic waves to determine the distribution of the internal structure of the material. In the field of deep space exploration, the utilization of space borne GPR to explore the subsurface structure of the planet has become a important way to understand the planet. However, due to the velocity of the satellite, the space borne GPR has a Doppler effect in its images, much different with images imaging by the static GPR. European Space Agency (ESA) and National Aeronautics and Space Administration (NASA) have been using space borne GPR to explore Mars successfully. However, related researches in China are few, still on the initial stage. In this paper, we will begin with the discussion of the differences between the imaging method of the general GPR and the space borne GPR. Then the imaging method and echo simulation in both fields and the interpretation and analysis of the echo simulation will also be discussed. These conclusions can also be used for airborne platforms and other motion platform situations.
Keywords: Ground-penetrating radar; Space borne; Motion platform; Echo simulation
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作者簡介
吳海涵（1987-），男，北京遙感設備研究所在讀碩士研究生，主要研究方向為星載探地雷達數據處理。
于丹茹（1973-），女，北京遙感設備研究所研究員，主要研究方向為星載氣象雷達與微波遙感。
李 �。�1963-），男，北京遙感設備研究所研究員，主要研究方向為毫米波收發技術。
