Dynamic Data Processing for X-Ray Pulsar Signal

ZHANG Dapeng; LI Zhize; WANG Yidi; ZHENG Wei

doi:10.15982/j.issn.2095-7777.2019.04.004

Journal of Deep Space Exploration ›› 2019, Vol. 6 ›› Issue (4) :335 -340. DOI: 10.15982/j.issn.2095-7777.2019.04.004

Topic: Autonomous Control for Spacecraft

Dynamic Data Processing for X-Ray Pulsar Signal

ZHANG Dapeng^1,2, LI Zhize¹, WANG Yidi¹, ZHENG Wei¹

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Abstract

X-ray pulsar-based navigation is a novel astronomical autonomous navigation method based on X-ray pulsar observation., The dynamic data processing is one of the key technologies for X-ray Pulsar-based navigation. Especially data processing under the condition of low-orbit and high-dynamic is more difficult than that under the conditions of high-orbit and lowdynamic. Aiming at the measured data with low signal-to-noise ratio,a target function re-estimation method is proposed for the condition of low-orbit and high-dynamic. Furthermore, the principle of the method is analyzed and the mathematical model is constructed. The performance of the method is verified by the measured data from HXMT and XPNAV-1 satellites.

Keywords

X-ray pulsar-based navigation / HXMT / XPNAV-1 / dynamic signal processing

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ZHANG Dapeng, LI Zhize, WANG Yidi, ZHENG Wei. Dynamic Data Processing for X-Ray Pulsar Signal. Journal of Deep Space Exploration, 2019, 6(4): 335-340 DOI:10.15982/j.issn.2095-7777.2019.04.004