This data set is aimed at Gangri Gabu area in the eastern section of nyainqentanglala. The data content is the field GPS (Global Positioning System) control point joint survey results carried out in Gangri Gabu area in 2015. The data format is excel file format. The record content includes the point number and the field of point longitude, latitude and altitude, including 418 point measurement records. The data set contains the results of field GPS control points joint survey in Gangri Gabu area in 2015, the file is excel data file, and the content includes the field GPS control point joint survey results carried out in Gangri Gabu area in 2015. To the decimal point (°), the unit is accurate to the decimal point (°), and the unit is accurate to the decimal point (°), and the unit is accurate to the decimal point (°), and the unit is accurate to the decimal point (°).
|collect time||2015/01/01 - 2015/12/31|
|collect place||Gangri Gabu|
|data size||37.8 kB|
Field measured data in 2015.
Taking one Huace T5 GNSS as the base station and two Huace T5 GNSS instruments as the mobile station, the field survey is carried out on the landmark features (Road intersection, bridges, boulders, buildings and other feature corners) in Gangri Gabu area. The survey software is LandStar Handbook software of China survey. CGCs 2000 is the target coordinate system and 99 ° is the central longitude. The point coordinate solution is completed by LandStar software in real time. Only the points with fixed solution (plane coordinate error & lt; 3cm, elevation coordinate error & lt; 4cm) is selected, and the measurement time is 10 seconds. In the measurement process, two point coordinates determined in the previous static survey are used for point correction to ensure that the measurement results are consistent with the static measurement coordinate system.
4-6 stations of China Survey X20 or T5 GNSS are used for joint survey, the synchronous measurement time is more than 1 hour, and 1-3 national control points are used for joint survey; the result calculation accuracy is controlled within 2cm
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