Volume 39 Issue 4
Jul.  2019
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ZHAO Shuang, YANG Li, ZHU Enhui, GAO Yao. Real-time Precise Point Positioning Ambiguity Resolution Based on Phase Biasesormalsize[J]. Journal of Space Science, 2019, 39(4): 512-519. doi: 10.11728/cjss2019.04.512
Citation: ZHAO Shuang, YANG Li, ZHU Enhui, GAO Yao. Real-time Precise Point Positioning Ambiguity Resolution Based on Phase Biasesormalsize[J]. Journal of Space Science, 2019, 39(4): 512-519. doi: 10.11728/cjss2019.04.512

Real-time Precise Point Positioning Ambiguity Resolution Based on Phase Biasesormalsize

doi: 10.11728/cjss2019.04.512
  • Received Date: 2018-08-30
  • Rev Recd Date: 2019-01-26
  • Publish Date: 2019-07-15
  • The real-time phase biases products released by CNES are used to realize real-time precise point positioning with ambiguity resolution. Firstly, the timing characteristics of real-time phase biases products are analyzed, which have high continuity and stability. Then the RTPPP solution is performed on the 10-day observation data of 10 IGS stations, and the first fixed time and positioning accuracy of the ambiguity are calculated respectively. It is concluded that the real-time phase biases product can achieve the first fixed ambiguity within an average time of 30 minutes. When the ambiguity is fixed, the horizontal position error can be quickly reduced from 6 cm to 2cm, and the three-dimensional position error can be quickly reduced from 10cm to about 5cm. At the same time, as the RTPPP ambiguity resolution keeps the result in 3h measurement, the positioning accuracy is about 3cm in 2D and 5cm in 3D. The results show that the real-time PPP ambiguity resolution technology based on phase biases has high positioning accuracy and stability, and can realize centimeter-level positioning quickly. It can promote the application of real-time phase biases products in real-time precise point positioning.

     

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