Study on Inversion of Soil Moisture Using Wavelet Analysis Assisted GPS-IR
Abstract GPS-IR is a new remote sensing technology based on satellite reflection signals. The inversion of soil moisture can be achieved by using satellite reflection signals in SNR observations. Aiming at the problem of satellite reflection signal separation, we propose a satellite reflection signal separation method based on wavelet analysis. Experiments show that wavelet analysis can make corresponding changes to the signal-to-noise ratio observations of different satellites, effectively separating satellite direct signals and obtaining more accurate satellite reflection signals. Linear regression model can well represent relative delay phase and soil moisture. The correlation between the wavelet analysis and the low-order polynomial is more obvious. Therefore, the method can be used as a new method for separating satellite reflected signals.
Key words :
GPS-IR
soil moisture
wavelet analysis
signal to noise ratio (SNR)
satellite reflected signal
Cite this article:
REN Chao,ZHANG Zhigang,LIANG Yueji et al. Study on Inversion of Soil Moisture Using Wavelet Analysis Assisted GPS-IR[J]. jgg, 2020, 40(1): 77-81.
REN Chao,ZHANG Zhigang,LIANG Yueji et al. Study on Inversion of Soil Moisture Using Wavelet Analysis Assisted GPS-IR[J]. jgg, 2020, 40(1): 77-81.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2020/V40/I1/77
[1]
WANG Xiaolei,NIU Zijin,HE Xiufeng. Precipitation Analysis and Judgment Based on GPS Water Vapor Retrieval and GPS-IR [J]. jgg, 2021, 41(9): 929-933.
[2]
WANG Wei,XU Fen,WANG Yupu. A Preprocess Method for Gross Error Detection Based on Wavelet Analysis [J]. jgg, 2021, 41(6): 623-627.
[3]
WANG Wei,SHEN Yunzhong,WANG Fengwei. Analysis on the Terrestrial Water Storage Changes in the Congo River Basin from 2002 to 2020 [J]. jgg, 2021, 41(5): 466-470.
[4]
NIE Shihai,ZHANG Xianyun,FU Ting,ZHAO Feifei. Soil Moisture Retrieval Based on BDS Triple-Frequency Phase Multipath Error [J]. jgg, 2021, 41(4): 374-377.
[5]
YUAN Zhiming, LI Peihong, LIU Xiaosheng. Study on the Application of Improved PSO-SVM Model Considering Neighbor-Point in the Settlement Prediction of Foundation Pit [J]. jgg, 2021, 41(3): 313-318.
[6]
WANG Haibin, ZHOU Yunyao, Lü Yongqing, XIANG Ya. Application and Discussion on Wavelet Threshold Method in Seismic Data Recorded by JCZ Series Ultra-Wideband Seismographs [J]. jgg, 2021, 41(3): 323-330.
[7]
PEI Yuekun,HAN Xinxin. Overview of GNSS-R Technique for Soil Moisture Detection [J]. jgg, 2021, 41(2): 140-144.
[8]
WANG Shitai,ZHANG Boyu,YIN Min. Research on Shadow Matching Algorithm for GNSS Positioning of Mobile Terminal Based on Dynamic Threshold [J]. jgg, 2021, 41(11): 1101-1105.
[9]
. [J]. jgg, 2020, 40(S2): 52-56.
[10]
. [J]. jgg, 2020, 40(S1): 33-36.
[11]
WANG Jie,HE Xiufeng,WANG Xiaolei,SONG Minfeng. Comparative Analysis of Dynamic Correction Method in Tidal Monitoring by GNSS-IR [J]. jgg, 2020, 40(8): 811-817.
[12]
. Wavelet Transform and Interference Elimination of Fixed-Point Deformation
Pressure Interference of Kuancheng Station [J]. jgg, 2020, 40(8): 860-864.
[13]
CAI Xinghui, ZHANG Yanming, CHEN Huifang, WU Lihua. Automatic Identification of Earthquake and Explosion Based on Wavelet Transform and Neural Network [J]. jgg, 2020, 40(6): 634-639.
[14]
XU Wei,XIE Zhaodi,YAN Ruyu,JIA Rui,XU Yan,LI Xiang,LIU Benyu,DONG Feifei,DENG Hui. Study on Seismic Energy Release Based on Wavelet Analysis [J]. jgg, 2020, 40(5): 452-456.
[15]
Lü Zheng,FENG Wei,HUANG Dingfa. Using GNSS Signal-to-Noise Ratio to Measure Dam Water Level Changes [J]. jgg, 2020, 40(2): 146-151.