模拟月壤中的被动微波辐射传输机理研究

It is one of the important and scientific goals of our first lunar exploration program to retrieve the lunar regolith thickness. In this paper, according to the complete lunar regolith and rock model, the influences of the regolith thermal grads, media dielectric parameters, surface roughness and the parallel or not of the two surfaces on the microwave raidative transfer in lunar regolith are studied based on the radiative transfer equation. The results show that the regolith thermal grads, the dielectric parameters and the roughness of the surface between free space and regolith have great influences on the microwave raidative transfer in lunar regolith. The results also indicate that the roughness and the obliquity of the surface between regolith and rock have little effect on the simulation results, and they can be neglected in the following study. Therefore, a perfect lunar regolith model is constructed based on the simulation results, which can be used to retrieve the lunar regolith parameters.