基于卫星实测数据的X射线脉冲星导航体制验证

doi:10.7527/S1000-6893.2021.26510

Abstract

Abstract:

The basic principles of X-ray pulsar-based navigation and X-ray pulsar sequential observation are introduced. An observation value processing method is proposed based on measured satellite data. Based on the original observation data received by the high energy X-ray detector in China's first large-scale astronomical satellite "Insight-HXMT"， the processing accuracy results of the navigation observation value are given. At the same time， the precise orbit determination ephemeris is used as the standard orbit， and is compared with the X-ray pulsar navigation results. It is concluded that the accuracy of X-ray pulsar-based navigation of the Insight-HXMT satellite data is about 10 km. Finally， according to the navigation results of the measured data， the insufficient aspects of this experiment are discussed and future suggestions are given.

Key words: X-ray pulsar-based navigation, measured data, Insight-HXMT satellite, autonomous navigation, photon

CLC Number:

V419

Dapeng ZHANG, Zongbo HUYAN, Hengnian LI. X-ray pulsar-based navigation verification based on satellite measured data[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2023, 44(3): 526510.

Figures/Tables 11

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References 20

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名称		数值
观测ID		P0101299003
提案ID		P0101299
类型		核心数据
目标		Crab
目标方位	赤经/（°）	83.633 0
目标方位	赤纬/（°）	22.014 5
观测起始时间（UTC）		2017-08-31 10：00：17.0
观测时长/s		230 121.0
观测模型		点源观测

名称	数值
历元（简约儒略日）［TDB］	57 992.165 481
赤经/（°）	83.633 216 7
赤纬/（°）	22.014 463 9
频率F₀/Hz	29.639 022 542
频率一阶导数F₁/（Hz⋅s^-1）	-3.686 7×10^-10
频率二阶导数F₂/（Hz⋅s^-1）	0

名称	数值
地球非球形摄动模型	GGM03S，40×40阶
三体摄动	太阳，月球，太阳系行星
太阳光压	太阳光压系数CR=1.0
大气阻力模型	大气密度模型：NRLMSISE00 大气阻力系数CD=2.2，面质比0.02

项目		数值
滤波步长/s		1 800
系统噪声	位置/（10^-6 m）	1.0
系统噪声	速度/（10^-9 m·s^-1）	1.0
测量噪声/km		5
协方差初值	位置/km速度/（cm·s^-1）	15 1
轨道初值	历元/s	178 797 663
	X/m	1 900 608.640 323 41
	Y/m	-5 150 172.248 804 13
	Z/m	4 238 757.376 004 91
	V_x /（m·s^-1）	5 990.590 021 381 08
	V_y /（m·s^-1）	4 084.661 265 043 63
	V_z /（m·s^-1）	2 277.571 735 840 44

方向	位置误差RMS/km	速度误差RMS/（m·s^-1）
R方向	2.60	5.45
T方向	5.32	1.57
N方向	3.93	3.32
三方向综合	7.11	6.58

X-ray pulsar-based navigation verification based on satellite measured data

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