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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2023, Vol. 44 ›› Issue (3): 526611-526611.doi: 10.7527/S1000-6893.2022.26611

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Scientific experiments and achievements of XPNAV-1

Kun JIANG1,2(), Wenhai JIAO1, Xiaolong HAO1, Ying LIU1, Yidi WANG3, Xinyuan ZHANG4, Ji GUO1   

  1. 1.Beijing Institute of Tracking and Communication Technology,Beijing 100094,China
    2.Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China
    3.College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China
    4.China Academy of Space Technology,Beijing 100094,China
  • Received:2021-11-03 Revised:2021-11-08 Accepted:2022-03-21 Online:2023-02-15 Published:2022-04-06
  • Contact: Kun JIANG E-mail:jiangkunzzy@126.com
  • Supported by:
    National Natural Science Foundation of China(U1838101)

Abstract:

X-ray pulsar navigation, as a strategic, cutting-edge, and basic technology, has attracted international attention since the birth of the concept. Due to the complexity of the pulsar navigation simulation verification model, it is difficult to verify all key technologies on the ground. Therefore, China launched the XPNAV-1 satellite in 2016 and carried out a series of scientific experiments. This paper systematically summarizes the scientific experiment results of XPNAV-1. The energy response, time response, effective area and background noise of Wolter-I focusing detector are on-orbit measured and calibrated using the measured data of large flow pulsars. Based on the measured data of low flow pulsars, the space environment detection experiment was carried out; the rotation parameters of Crab pulsar with high accuracy are obtained by long-term observation and timing analysis; the pulsar navigation technology is verified by preliminary experiments. Combined with the scientific experiment experience of XPNAV-1, the future development direction is proposed. The experiments have found out the current capability of pulsar navigation technology, and obtained a large amount of independent observation data, accelerating the development of pulsar navigation technology of China.

Key words: XPNAV-1, Crab pulsar, X-ray detector, X-ray pulsar navigation, pulsar glitch

CLC Number: