Journal of Astronautics ›› 2017, Vol. 38 ›› Issue (9): 964-970.doi: 10.3873/j.issn.1000-1328.2017.09.009

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Doppler Velocity Measurement Based on Double Measurement Model and Its Integrated Navigation

KANG Zhi wei, XU Xing man, LIU Jin, LI Na   

  1. 1. College of Computer Science and Electronic Engineering, Hunan University, Changsha 410082, China;
    2. College of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
  • Received:2017-03-13 Revised:2017-07-14 Online:2017-09-15 Published:2017-09-25


In order to reduce the influence of the spectral distortion on the Doppler velocity measurement and improve the navigation and positioning accuracy, we propose a Doppler velocity measurement method based on a double measurement model. With this method, whether the solar spectrum is distorted or not is judged by the fault detection mechanism so as to decide to adopt the Doppler differential velocity measurement or the two-dimensional Doppler velocity measurement. Furthermore, we combine it with the X-ray pulsar navigation method to lessen the problem of the accumulative state error. The simulation results verify the effectiveness of the method. Compared with other X-ray pulsar/Doppler integrated navigation methods, the proposed method can resist the influence of the spectrum distortion and obtain the high accuracy estimation of position and velocity as well.

Key words: Doppler velocity measurement, Integrated navigation, Spectrum distortion, Pulsar

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