Open AccessSoftware receiver design for GNSS‐R using multiple GNSS satellites as transmitters
Author(s) -
Shi Shuzhu,
Wang Shiwei,
Li Tao
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0534
Subject(s) - gnss applications , global positioning system , computer science , remote sensing , galileo (satellite navigation) , satellite system , satellite navigation , gnss augmentation , satellite , reflectometry , telecommunications , geography , engineering , computer vision , time domain , aerospace engineering
A novel global navigation satellite system‐reflectometry (GNSS‐R) software receiver and its preliminary experimental results are presented in this study. The antenna systems, the multi‐channel radio‐frequency front end, and the digital signal processing unit of this receiver are described in detail. With this developed software receiver, the signals in the Global Positioning System L1 band (GPS L1), BeiDou‐2 B1, GLObal NAvigation Satellite System L1, and Galileo E1 bands can be tracked and used as the transmissions of GNSS‐R to obtain more information about the scattering properties of ground objects. The preliminary experimental results show that various GNSS signals can be successfully acquired and tracked by this receiver. Furthermore, when it was applied to the soil moisture estimation with the ground‐based GNSS‐R technique, a relative measure error of 5.79 and 1.39% can be obtained with GPS L1 and BeiDou‐2 B1 signals, respectively, by comparing the retrieval results with the measuring results provided by a moisture metre.