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Improving GLONASS Precise Orbit Determination through Data Connection.

Yang Liu1,2, Maorong Ge3, Chuang Shi4

  • 1GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, China. liudaweng@126.com.

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|December 4, 2015
PubMed
Summary
This summary is machine-generated.

This study improves Global Navigation Satellite System (GNSS) orbit precision by connecting satellite data segments. This method enhances observation continuity, leading to more accurate precise orbit determination (POD) solutions for GLONASS.

Keywords:
GLONASSdata connectionorbit precisionprecise orbit determination

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Area of Science:

  • Geodesy and Geomatics
  • Satellite Navigation Systems
  • Orbital Mechanics

Background:

  • Precise orbit determination (POD) is crucial for GNSS applications.
  • GLONASS orbit precision can be limited by data continuity.
  • Existing methods may not fully exploit continuous observation arcs.

Purpose of the Study:

  • To enhance the precision of Global Navigation Satellite System (GLONASS) orbits.
  • To develop a method for connecting discontinuous data segments of single station-satellite pairs.
  • To improve observation continuity for stronger POD solutions.

Main Methods:

  • Connecting GLONASS station-satellite data segments to form longer observation arcs.
  • Statistically testing and correcting wide-lane and narrow-lane ambiguities using the Melbourne-Wübbena combination.
  • Utilizing precise orbit determination (POD) solutions for ambiguity refinement.

Main Results:

  • Successfully connected an average of 27.1% of GLONASS station-satellite pairs with multiple segments into single arcs.
  • Reduced the need for estimating multiple ambiguity parameters by creating continuous arcs.
  • Achieved an average reduction of 6.3% in GLONASS orbit overlapping Root Mean Square (RMS) at day boundaries, with ideal cases showing up to 19.2% improvement.

Conclusions:

  • The proposed method effectively improves GLONASS orbit precision by enhancing observation continuity.
  • Connecting data segments and refining ambiguities significantly strengthens the POD solution.
  • This approach offers a practical way to increase the accuracy of satellite navigation data.