Evaluation of accuracy of the altimetry data in the sea area around the Truong Sa Archipelago
Khoa Trắc địa - Bản đồ và Quản lý đất đai, Trường Đại học Mỏ - Địa chất, Việt Nam
- Received: 15th-Aug-2017
- Revised: 18th-Oct-2017
- Accepted: 30th-Oct-2017
- Online: 30th-Oct-2017
- Section: Geomatics and Land Administration
This paper focuses on studying a new method to evaluate the accuracy of satellite altimetry data which is determined on the different height at cross-over points between ascending and descending tracks. This method bases on the Gauss and Bexen methods. In this paper, we conducted the experiment by using 18676 observations of Cryosat-2 satellite from cycle 31 to cycle 43 in the sea area around the Truong Sa Archipelago. From these results, the authors proposed a new formula to evaluate the accuracy of satellite altimetry data in the case with and without systematic errors. The experimental results showed that, the altimetry data from Cryosat-2 on the sea around the Truong Sa Archipelago does not contain systematic error and obtains the accuracy at ± 0.035m.