Back to Search
Start Over
谷歌 Nexus 9 智能终端原始GNSS 观测值的质量分析.
- Source :
-
Geomatics & Information Science of Wuhan University . Dec2019, Vol. 44 Issue 12, p1749-1756. 8p. - Publication Year :
- 2019
-
Abstract
- This paper analyzes and evaluates the quality of the static raw Global Navigation Satellite System (GNSS) observations of Google Nexus 9 tablet in terms of signal-to-noise ratio(SNR), pseudorange residual and phase residual in the open sky. The results show that the SNR of Global Positioning System (GPS), GLONASS observations collected from the tablet is about 10 dBHz lower than normal surveying receiver; pseudorange accuracies of GPS, GLONASS observations are 5.43 m and 11.39 m, phase accura⁃ cies are 4.44 mm and 4.99 mm respectively. Compared with the elevation, the SNR is more relevant to the pseudorange residuals and reflects the quality of the observations better. On this basis, a stochastic model of SNR weighting is given and a standard point positioning test is conducted. The positioning precision is 2.74 m in horizontal component and 4.56 m in vertical component which are increased by about 26% compared with the elevation weighted positioning in the open sky. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GLOBAL Positioning System
*STOCHASTIC models
*ALTITUDES
*SKY
Subjects
Details
- Language :
- Chinese
- ISSN :
- 16718860
- Volume :
- 44
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Geomatics & Information Science of Wuhan University
- Publication Type :
- Academic Journal
- Accession number :
- 140829505
- Full Text :
- https://doi.org/10.13203/j.whugis20180141