Application of Camera Array in Initial Orbit Determination of Space Targets

Fig. 1. Observed images. (a) Partial screenshots of single camera; (b) partial screenshot after registration overlay; (c) partial screenshot after noise debasing

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Fig. 2. Partial screenshots of four-camera shots. (a) Camera 1; (b) camera 2; (c) camera 3; (d) camera 4

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Fig. 3. Partial screenshot of registration overlay

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Fig. 4. Star maps. (a) Original; (b) processed

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Table 1. Calculation results of signal-to-noise ratio

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Table 1. Calculation results of signal-to-noise ratio

Data source	E	σ	Star number	Number of pixels	${\bar{G}}_{target}$	R_SN
Camera 1	5.196	3.403	82	33	25.5454	5.9799
			84	26	27.5384	6.5655
			132	18	19.5023	4.2034
Camera 2	5.188	3.391	82	43	21.5581	4.8275
			84	32	27.6875	6.6351
			132	24	18.7917	4.0117
Camera 3	5.173	3.393	82	39	24.4615	5.6848
			84	26	24.9231	5.8208
			132	26	19.3462	4.1772
Camera 4	5.178	3.404	82	35	25.8857	6.0833
			84	33	26.3030	6.2059
			132	23	18.8698	4.0222
Registration overlay	20.546	7.986	82	43	87.8139	8.4232
			84	35	95.8857	9.4340
			132	30	66.0667	5.7001

Table 2. Positioning errors when different constant models for each camera used″

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Table 2. Positioning errors when different constant models for each camera used″

Data source	4 constant model	6 constant model	12 constant model	20 constant model	30 constant model
Camera 1	3132	6.48	2.79	0.68	0.60
Camera 2	3240	7.10	2.43	0.73	0.61
Camera 3	3140	5.79	2.31	0.69	0.59
Camera 4	3169	6.23	2.92	0.61	0.63
Registration overlay	2980	6.29	2.22	0.59	0.59

Table 3. Semi-major axis errors when different constant models for each camera usedkm

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Table 3. Semi-major axis errors when different constant models for each camera usedkm

Data source	4 constant model	6 constant model	12 constant model
Camera 1	1001.282	104.187	54.664
Camera 2	1056.562	112.654	59.781
Camera 3	1034.257	102.633	51.222
Camera 4	984.768	89.579	47.257
Registration overlay	739.184	78.659	35.441

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Biao Yang, Yingchun Li, Tinghua Zhang. Application of Camera Array in Initial Orbit Determination of Space Targets[J]. Acta Optica Sinica, 2019, 39(2): 0204002

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Paper Information

Category: Detectors

Received: Jul. 10, 2018

Accepted: Sep. 29, 2018

Published Online: May. 10, 2019

The Author Email:

DOI:10.3788/AOS201939.0204002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology