Single-Receiver Ambiguity Resolution for Copernicus Sentinel Satellites Using Different Gnss Products
Abstract
In the pursuit of better POD (Precise Orbit Determination) accuracies, the single receiver ambiguity resolution is a necessary technique. This constrains the POD solution allowing to increase the accuracy of the orbit solutions, and allowing to set up empirical parameters more targeted.
In network-based GNSS processing, the use of double-differences removes the emitter and receiver uncalibrated biases, and therefore, the carrier phase ambiguities can be fixed to their integer values. However, for orbiting receivers in a stand-alone processing, it is necessary to correct the emitter uncalibrated biases directly. Currently, there are several options to do so: the GPS wide-lane bias product from CNES/CLS is widely used but also other products recently became available, like the CODE bias product. Additionally, GMV is capable of generating the necessary inputs as an output of its magicGNSS network processing. In this study, we will show the different schemes, its advantages and disadvantages from an operational point of view, the differences and stabilities of the biases, and the orbital accuracy results obtained using them. The operational element is relevant to the Copernicus POD Service, which is currently computing the precise orbits of the Copernicus Sentinel-1, -2 and -3 satellites. The goal to use single-receiver ambiguity resolution to short timeliness will be assessed. For this analysis, the GPS data of the Copernicus Sentinels-1, -2 and -3 satellites will be used.- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.G31C0664B
- Keywords:
-
- 1221 Lunar and planetary geodesy and gravity;
- GEODESY AND GRAVITY;
- 1240 Satellite geodesy: results;
- GEODESY AND GRAVITY;
- 1241 Satellite geodesy: technical issues;
- GEODESY AND GRAVITY