Non-Cooperative Common-View Observation of LEO Space Objects and Initial Orbit Determination

Long Chen; Chengzhi Liu; Zhenwei Li; Jiannan Sun; zhe Kang; Shiyu Deng

doi:10.3788/AOS202141.1912003

Acta Optica Sinica, Volume. 41, Issue 19, 1912003(2021)

Non-Cooperative Common-View Observation of LEO Space Objects and Initial Orbit Determination

Long Chen¹, Chengzhi Liu^1,3、*, Zhenwei Li¹, Jiannan Sun¹, zhe Kang¹, and Shiyu Deng^1,2

¹Changchun Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Changchun, Jilin 130117, China

²University of Chinese Academy of Sciences, Beijing 100049, China

³Key Laboratory of Space Object & Debris Observation, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, China

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Figures & Tables(5)

Fig. 1. Non－cooperative common－view observation of space object

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Fig. 2. Images of space objects obtained by photoelectric telescopes. (a) Photoelectric telescope A；(b) photoelectric telescope B

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Table 1. Orbital parameters of space objects
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Table 1. Orbital parameters of space objects
Space object NORAD (The North American Air Defense Command) Number Eccentricity Mean altitude /km
CZ－2C R/B 31114 0.00607 834.7
Ajisai 16908 0.00113 1494.7

Table 2. RMS position errors of trigonometric parallax method and statistics method

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Table 2. RMS position errors of trigonometric parallax method and statistics method

Space object	Date	Trigonometric parallax method				Statistics method
Space object	Date	x	y	z	3D	x	y	z	3D
CZ－2C R/B	20201007	156.25	141.49	99.69	233.18	45.79	94.03	70.11	125.92
	20201008	264.12	149.21	78.01	313.22	126.42	94.52	21.64	159.32
	20201010	423.00	61.93	101.94	439.50	170.48	34.71	41.55	178.87
Ajisai	20201011	64.54	44.15	39.29	87.51	28.98	30.46	36.89	55.93
	20201012	56.92	95.32	40.56	118.20	42.56	74.81	37.84	94.02
	20201013	67.87	36.48	43.89	88.68	43.46	24.29	30.23	58.25

Table 3. The SMA errors of two cases

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Table 3. The SMA errors of two cases

Space object	Date	SMA error of non－cooperative common－view /km	SAM error of single site /km
CZ－2C R/B	20201007	1.028	5.272
	20201008	1.573	6.375
	20201010	1.287	5.518
Ajisai	20201011	0.824	4.375
	20201012	1.134	5.022
	20201013	0.928	3.958

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Long Chen, Chengzhi Liu, Zhenwei Li, Jiannan Sun, zhe Kang, Shiyu Deng. Non-Cooperative Common-View Observation of LEO Space Objects and Initial Orbit Determination[J]. Acta Optica Sinica, 2021, 41(19): 1912003

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