High-Precision Log-Ratio Spot Position Detection Algorithm with a Quadrant Detector under Different SNR Environments

doi:10.3390/s22083092

CIOMP OpenIR

	High-Precision Log-Ratio Spot Position Detection Algorithm with a Quadrant Detector under Different SNR Environments
	L. Huo; Z. Y. Wu; J. B. Wu; S. J. Gao; Y. S. Chen; Y. N. Song and S. F. Wang
	2022
发表期刊	Sensors
卷号	22 期号:8 页码:11
摘要	In atmospheric laser communication, a beam is transmitted through an atmospheric channel, and the photocurrent output from a quadrant detector (QD) used as the tracking sensor fluctuates significantly. To ensure uninterrupted communication and to adapt to such fluctuations, in this paper we apply logarithmic amplifiers to process the output signals of a QD. To further improve the measurement accuracy of the spot position, we firstly propose an integral infinite log-ratio algorithm (IILRA) and an integral infinity log-ratio algorithm based on the signal-to-noise ratio (BSNR-IILRA) through analysis of the factors influencing the measurement error considering the signal-to-noise ratio (SNR) parameter. Secondly, the measurement error of the two algorithms under different SNRs and their variations are analyzed. Finally, a spot position detection experiment platform is built to correctly and efficiently verify the two algorithms. The experimental results show that when the SNR is 54.10 dB, the maximum error and root mean square error of the spot position of the IILRA are 0.0054 mm and 0.0039 mm, respectively, which are less than half those of the center approximation algorithm (CAA). When the SNR is 23.88 dB, the maximum error and root mean square error of the spot position of the BSNR-IILRA are 0.0046 mm and 0.0034 mm, respectively, which are one-thirtieth and one-twentieth of the CAA, respectively. The spot position measurement accuracy of the two proposed algorithms is significantly improved compared with the CAA.
DOI	10.3390/s22083092
URL	查看原文
收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66728
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	L. Huo,Z. Y. Wu,J. B. Wu,et al. High-Precision Log-Ratio Spot Position Detection Algorithm with a Quadrant Detector under Different SNR Environments[J]. Sensors,2022,22(8):11.
APA	L. Huo,Z. Y. Wu,J. B. Wu,S. J. Gao,Y. S. Chen,&Y. N. Song and S. F. Wang.(2022).High-Precision Log-Ratio Spot Position Detection Algorithm with a Quadrant Detector under Different SNR Environments.Sensors,22(8),11.
MLA	L. Huo,et al."High-Precision Log-Ratio Spot Position Detection Algorithm with a Quadrant Detector under Different SNR Environments".Sensors 22.8(2022):11.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
High-Precision Log-R（2662KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载