Soil Moisture Retrieval Based on BDS Triple-Frequency Phase Multipath Error
Abstract In order to enrich the data source of GNSS-IR technology, we propose a method for soil moisture retrieval based on multipath error of BDS triple-frequency carrier phase. The results show that there is a strong correlation between the delay phase derived from the multipath error and the soil moisture, and the correlation coefficient is 0.97. Because only a few epoch multipath errors are needed, the soil moisture retrieval accuracy comparable to GNSS-IR based on signal-to-noise ratio can be obtained, so the new method makes it easier to achieve high dynamic monitoring of soil moisture.
Key words :
GNSS interferometric reflectometry
multipath error
delay phase
soil moisture
Cite this article:
NIE Shihai,ZHANG Xianyun,FU Ting et al. Soil Moisture Retrieval Based on BDS Triple-Frequency Phase Multipath Error[J]. jgg, 2021, 41(4): 374-377.
NIE Shihai,ZHANG Xianyun,FU Ting et al. Soil Moisture Retrieval Based on BDS Triple-Frequency Phase Multipath Error[J]. jgg, 2021, 41(4): 374-377.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2021/V41/I4/374
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