GPS Solutions

, 22:56 | Cite as

Performance of GPS and GPS/SINS navigation in the CE-5T1 skip re-entry mission

  • Meng Wang
  • Tao Shan
  • Lin Ma
  • Ran Tao
  • Chunliang Chen
Review Article


A CE-5T1 spacecraft completed a high-speed skip re-entry to the earth after a circumlunar flight on October 31, 2014. In addition to the strapdown inertial navigation system (SINS), a lightweight GPS receiver with rapid acquisition was developed as a navigation sensor in the re-entry capsule. The GPS receiver effectively solved the poor accuracy problem of long-term navigation using only the SINS. In contrast to ground users and low-earth-orbit spacecraft, numerous factors, including high altitude and kinetic characteristics in high-speed skip re-entry, are important for GPS positioning feasibility and were presented in accordance with the flight data. GPS solutions started at nearly 4900 km orbital altitude during the phases of re-entry process. These solutions were combined by an inertial measurement unit in a loosely coupled integrated navigation method and SINS navigation initialization. A simplified GPS/SINS navigation filter for limited resources was effectively developed and implemented on board for spacecraft application. Flight data estimation analyses, including trajectory, attitude, position distribution of GPS satellite, and navigation accuracy, were presented. The estimated accuracy of position was better than 42 m, and the accuracy of velocity was better than 0.1 m/s.


CE-5T1 Skip re-entry GPS receiver GPS/SINS navigation 



This work was supported by the National Natural Science Foundation of China (NSFC) under Grant Nos. 61601036 and 61421001.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Meng Wang
    • 1
  • Tao Shan
    • 1
  • Lin Ma
    • 2
  • Ran Tao
    • 1
  • Chunliang Chen
    • 3
  1. 1.Beijing Institute of TechnologyBeijingChina
  2. 2.Beijing Institute of Control EngineeringBeijingChina
  3. 3.China Academy of Space TechnologyBeijingChina

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