GNSS World of China

Volume 48 Issue 3
Jun.  2023
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ZHOU Xin, ZHANG Shuangcheng, ZHANG Qin, LIU Qi, MA Zhongmin, LIU Ning. Research progress and prospects of GNSS-IR interpretation of surface environmental parameters[J]. GNSS World of China, 2023, 48(3): 12-23. doi: 10.12265/j.gnss.2023061
Citation: ZHOU Xin, ZHANG Shuangcheng, ZHANG Qin, LIU Qi, MA Zhongmin, LIU Ning. Research progress and prospects of GNSS-IR interpretation of surface environmental parameters[J]. GNSS World of China, 2023, 48(3): 12-23. doi: 10.12265/j.gnss.2023061
shu

Research progress and prospects of GNSS-IR interpretation of surface environmental parameters

doi: 10.12265/j.gnss.2023061
  • 1.

    School of Geological Engineering and Geomatics Chang’an University, 710054, China

  • 2.

    State Key Laboratory of Geo-Information Engineering, 710054, China

  • Received Date: 2023-03-26
    Abstract
  • The Global Navigation Satellite System (GNSS) has the characteristics of all-weather, near real-time, and high accuracy, and can continuously transmit L-band signals, which are widely used for positioning, navigation, and timing (PNT). As the research and application of GNSS continue to grow, the Global Positioning System Interferometric Reflectometry (GNSS-IR) technology provides a new means of surface parameter detection. After the GNSS radio navigation signal is reflected by different surface media (such as soil, snow, water surface, etc.), the reflected GNSS multipath signals carry the characteristic information of the reflecting surface, and the physical parameters of the surface reflecting surface can be effectively obtained through the analysis of parameters such as amplitude, phase, and frequency in GNSS reflecting signals. GNSS-IR, as a current research hotspot in the field of GNSS and remote sensing, has made some research progresses and achievements. This paper introduces in detail the principle and method of GNSS-IR and the progress of the application of this technology in soil moisture, vegetation, snow and water level. Based on this, problems and development directions in GNSS-IR research are presented.

     

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