Design On The Real-time Measurement System Of Physical Parameters For Simulated Lunar Soil

One of the four scientific objectives of Chang’E Lunar Orbite (CE-1) is to detect thelunar regolith depth, retrieve the lunar regolith parameters and their distribution. It is avaluable research work of the lunar resources exploring for future utilization. Theretrieving work for the lunar regolith is a tough work due to the complexity of the lunarregolith. Recently many domestic academic institutions have done the retrieving work ofthe lunar regolith depth by using different brightness temperature models and the data ofbrightness temperature from the Chang’E microwave radiometer, but the retrieval resultsfail to make a good agreement with each other. In order to obtain favorable results of theretrieval of the lunar regolith depth, the theoretical retrieval model is necessary to bedemonstrated. Thus, experiments to simulate the lunar regolith on the earth are supposedto be done to verify the relationship among the theoretical retrieval model, dielectricconstants and temperature.Research work about measurement methods and measurement system of thesimulative lunar regolith (complex dielectric constants, temperature, humidity) were donein this paper. Firstly, the basic theory of the measurement of the dielectric constants,temperature and humidity were illustrated. Then, the comparison results of these physicalparameters were indicated. According to the comparison results, the optimal measuremethod was determined for each parameter, respectively. Further, the plan of the real-timemeasure system was proposed. This measure system involved the dielectric constantsprobe kit, the temperature measuring apparatus, and the humidity measuring apparatus.The labview code was applied to fulfill the basic function of the measurement of thedielectric constants, the temperature, the humidity, the acquisition and storage of the data,etc.Finally, the measure system was verified by function tests and the results indicatedthe measure system achieve the design goal.