High-Precision Automatic Calibration Modeling of Point Light Source Tracking Systems

doi:10.3390/s21072270

	High-Precision Automatic Calibration Modeling of Point Light Source Tracking Systems
	Li, Ruijin 1,2; Zhang, Liming 1; Wang, Xianhua 1; Xu, Weiwei 1; Li, Xin 1; Li, Jiawei 1,2; Hu, Chunhui 1,2
刊名	SENSORS
	2021-04-01
卷号	21
关键词	radiometric calibration modeling geometric error high-precision calibration
DOI	10.3390/s21072270
通讯作者	Zhang, Liming(lmzhang@aiofm.ac.cn)
英文摘要	To realize high-precision and high-frequency unattended site calibration and detection of satellites, automatic direction adjustment must be implemented in mirror arrays. This paper proposes a high-precision automatic calibration model based on a novel point light source tracking system for mirror arrays. A camera automatically observes the solar vector, and an observation equation coupling the image space and local coordinate systems is established. High-precision calibration of the system is realized through geometric error calculation of multipoint observation data. Moreover, model error analysis and solar tracking verification experiments are conducted. The standard deviations of the pitch angle and azimuth angle errors are 0.0176 degrees and 0.0305 degrees, respectively. The root mean square errors of the image centroid contrast are 2.0995 and 0.8689 pixels along the x- and y-axes, respectively. The corresponding pixel angular resolution errors are 0.0377 degrees and 0.0144 degrees, and the comprehensive angle resolution error is 0.0403 degrees. The calculated model values are consistent with the measured data, validating the model. The proposed point light source tracking system can satisfy the requirements of high-resolution, high-precision, high-frequency on-orbit satellite radiometric calibration and modulation transfer function detection.
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
语种	英语
出版者	MDPI
WOS记录号	WOS:000638845800001
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/121726]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Liming
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Inst Opt & Fine Mech, Key Lab Opt Calibrat & Characterizat, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Li, Ruijin,Zhang, Liming,Wang, Xianhua,et al. High-Precision Automatic Calibration Modeling of Point Light Source Tracking Systems[J]. SENSORS,2021,21.
APA	Li, Ruijin.,Zhang, Liming.,Wang, Xianhua.,Xu, Weiwei.,Li, Xin.,...&Hu, Chunhui.(2021).High-Precision Automatic Calibration Modeling of Point Light Source Tracking Systems.SENSORS,21.
MLA	Li, Ruijin,et al."High-Precision Automatic Calibration Modeling of Point Light Source Tracking Systems".SENSORS 21(2021).