The technology of Global Navigation Satellite System Interferometric Reflectometry (GNSS-IR) is widely used, which has a relatively broad development space in sea level monitoring, snow depth detection, soil moisture inversion and determination of sea ice thickness. As it matures, GNSS-IR technology is also becoming more popular and low-cost. This study uses the Signal-to-Noise Ratio (SNR) data received by the smartphone Redmi Note 9 Pro 5G and the GNSS receiver Trimble R10 to perform a GNSS-IR test for the inversion effect of the reflection height. The common SNR types are GPS-S1C, GLONASS-S1C and BDS-S2I. Three evaluation indicators evaluate the accuracy of the inversion result of each SNR type: mean (MEAN), median (MEDIAN) and root mean square error (RMSE). It is known from the ground height retrieved by the experiment that both the Redmi Note 9 Pro 5G and Trimble R10 receiver maintain a good monitoring result. After the result of the three satellite navigation system are fused, the ground height retrieved by the Redmi Note 9 Pro 5G is compared with the measured height. And the RMSE is 10.4 cm. The MEAN is 1.646 m, which is only 2.4 cm away from the true value. The MEDIAN is 1.668 m, which is only 0.2 cm away from the true value. This study verifies the applicability and reliability of smartphone SNR data in GNSS-IR ground height inversion, laying a foundation for the low-cost development of GNSS-IR technology in the future.
Research on GNSS-IR Height Measurement Performance of Smartphone Platform
Lect. Notes Electrical Eng.
China Satellite Navigation Conference ; 2022 ; Beijing, China May 22, 2022 - May 25, 2022
China Satellite Navigation Conference (CSNC 2022) Proceedings ; Chapter : 12 ; 123-135
2022-05-07
13 pages
Article/Chapter (Book)
Electronic Resource
English
Lake height variation measurement utilizing GNSS reflected signal carrier phase
British Library Online Contents | 2009
|Smartphone Shadow Matching for Better Cross-street GNSS Positioning in Urban Environments
Online Contents | 2015
|