Study on main factors affecting position detection accuracy of four-quadrant detector

	Study on main factors affecting position detection accuracy of four-quadrant detector
	Zhang, H.; Y. Chen; T. Geng; J. Wu and T. Chen
	2015
发表期刊	Zhongguo Jiguang/Chinese Journal of Lasers
卷号	42 期号:12
摘要	In order to improve the spot position detection performance of four-quadrant detector (QD), the main factors affecting QD position detection accuracy in the Gaussian spot model are studied. The basic principle of QD position detection is analyzed. Then on the basis of error theory, the mathematical model of the relationship between position detection accuracy and spot radius, centroid position, signal to noise ratio (SNR) is obtained when a laser spot of Gaussian energy profile illuminates QD. The validity of mathematical model is verified by numerical simulations and experimental analysis. The trends and degree of the factors impact on the position detection accuracy are further discussed. The results show that adoption of smaller spot radius, closer to the center of photosensitive area, and higher SNR, can effectively improve the accuracy of spot detection when the detection range of QD system is fixed. When system's SNR is 57.48 dB and spot radius is 0.6 mm, the center position detection accuracy of QD can be up to 0.514 m. 2015, Science Press. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56392
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang, H.,Y. Chen,T. Geng,et al. Study on main factors affecting position detection accuracy of four-quadrant detector[J]. Zhongguo Jiguang/Chinese Journal of Lasers,2015,42(12).
APA	Zhang, H.,Y. Chen,T. Geng,&J. Wu and T. Chen.(2015).Study on main factors affecting position detection accuracy of four-quadrant detector.Zhongguo Jiguang/Chinese Journal of Lasers,42(12).
MLA	Zhang, H.,et al."Study on main factors affecting position detection accuracy of four-quadrant detector".Zhongguo Jiguang/Chinese Journal of Lasers 42.12(2015).

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