Ground Observation Experiments of Soil Moisture Based on Different Vegetation Coverage

The ground-based microwave radiometer has a strong ability to observe the earth's surface throughout all-time and allweather conditions, which is widely used in the experiments of soil moisture, freeze-thaw and other surface parameters of microwave remote sensing. The observed data could not only be used to establish and verify microwave radiation model and interpret the transmission process and mechanism, but also could be used to improve the retrieval algorithm of surface parameters by optimizing different target parameters. Base on the observation experiment of soil moisture, the design of its experimental scheme was described, and the multi-frequency microwave radiation characteristics of soil moisture were analyzed under different land-cover types in this paper.