Studies of the Orbit Combination and Its Precision Evaluation Based on the Production of IGS Analysis Center

doi:10.13474/j.cnki.11-2246.2018.0135

Abstract

Abstract:

In view of the stability of the framework and orbital products of IGS Analysis Center,an integrated trajectory algorithm based on IGS Analysis Center product is proposed.The self-assembly algorithm is used to synthesize the precision orbit of IGS Analysis Center from GPS week 1938 to 1944 and obtain GPS combination orbit.Experimental results shows that in all of Analysis Center,NGS,GFZ,CODE and ESA have better accuracy on their orbit products,while the remaining relatively poor.And it is proved that there are frame differences between the Analysis Center orbit and the final orbit presented by IGS.Compared with IGS final orbit,the difference of 3D RMS on combined orbit are less than 5 mm.The feasibility of this algorithm is proved by using the algorithm in paper.

Key words: orbit combination, IGS product, precision evaluation

CLC Number:

P228

LU Yicai, GAO Chengfa, GUO Qi. Studies of the Orbit Combination and Its Precision Evaluation Based on the Production of IGS Analysis Center[J]. 测绘通报, 2018, 0(5): 11-15,34.

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