- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | XU Shaoguang, XIONG Yongliang, ZHANG Wenhao, WANG Dejun. Undifferenced Precise GPS Processing Software PLAOD and Its Performance Analysis[J]. Journal of Southwest Jiaotong University, 2023, 58(1): 159-166. doi: 10.3969/j.issn.0258-2724.20210596
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PLAOD (precise location and orbit determination) is an undifferenced precise GPS data processing software for positioning and orbit determination fully developed by Southwest Jiaotong University. Currently, the software can process GPS observation data, and has the functions of precise positioning, atmospheric inversion and orbit determination for low earth obiter. Following the introduction to basic theory of PLAOD, its performance is focused. Multiple sets of GPS observation data were tested. Compared with the precise product provided by IGS (international GNSS service) and other institutes, PLAOD has shown following features. The static positioning accuracy can reach millimeter level, the kinematic positioning accuracy can reach centimeter level, the estimation precision of the tropospheric zenith delay in static mode is usually better than 1 cm, and the one in kinematic mode is better than 2 cm. There is a high consistence between the ionospheric zenith delay results from PLAOD and the IONEX (ionosphere exchange) product of IGS. In comparison with the reduced dynamic orbit of low earth orbiter provided by JPL (jet propulsion laboratory), the accuracy of orbit determined by geometry method is usually at the centimeter level.
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