Current Status and Development Trend of Surface Penetrating Radarin the Application of Lunar and Deep Space Exploration

Surface Penetrating Radar(SPR)，a kind of geophysical method to survey the internal structure and change of properties of lossy dielectric material by using electromagnetic wave，is only able to penetrate the desolate surface of the planet for finding hidden signs of water ice.In addition，SPR is also the most eligible non destructive method for imaging planetary shallow layer soil structure and rock changes caused by electromagnetic discontinuous.This paper reviews the decades history of SPR in the application of extraterrestrial planetary exploration，and summarizes the scientific objectives，performance and results of SPRs configured in lunar and deep space missions.Then on this basis，combined with the latest news on radar technology，the main development trend of SPR in lunar and deep space exploration is given.