High-accuracy angle detection for ultra-wide-field-of-view acquisition   in wireless optical links

doi:10.1117/1.2844697

CORC > 北京大学 > 信息科学技术学院

	High-accuracy angle detection for ultra-wide-field-of-view acquisition in wireless optical links
	Song, Xiaozheng ; Liu, Lu ; Tang, Junxiong
刊名	光学工程
	2008
关键词	optical wireless communication network ultra-wide-field-of-view acquisition distortion correcting voigt anomalous dispersion optical filter SYSTEM
DOI	10.1117/1.2844697
英文摘要	A novel scheme to deploy a point-to-multipoint optical wireless communication network is proposed. The master node provides hemispherical field-of-view (FOV) acquisition via a fisheye lens to achieve the automatic establishment of optical links with user nodes. We present an effective distortion-correcting algorithm based on two-ary piecewise bicubic spline interpolation to correct the large optical distortions of the fisheye lens. Using this algorithm, the angles of the incident beams are accurately calculated according to the laser spot position on the CCD (charge-coupled device) sensor with the maximum error of 0.027 deg. In addition, the strong background radiation from such an ultrawide FOV also leads to significant degradation of the angle detection accuracy under the condition of weak received optical power. A Voigt anomalous dispersion optical filter with ultra-narrow-pass bandwidth is adopted to resist the background radiation. The numerical simulation results show that the total angle detection error caused by the optical distortion and the background radiation is within 0.06 deg. Considering the extra gimbal pointing error and the angle-of -arrival fluctuations due to atmospheric turbulence, the pointing error of the master node is less than 0.079 deg, which meets the high-accuracy requirement of pointing for the automatic optical link establishment. (c) 2008 Society of Photo-Optical Instrumentation Engineers.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000254522700026&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Optics; SCI(E); 6; ARTICLE; 2; 47
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/292099]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Song, Xiaozheng,Liu, Lu,Tang, Junxiong. High-accuracy angle detection for ultra-wide-field-of-view acquisition in wireless optical links[J]. 光学工程,2008.
APA	Song, Xiaozheng,Liu, Lu,&Tang, Junxiong.(2008).High-accuracy angle detection for ultra-wide-field-of-view acquisition in wireless optical links.光学工程.
MLA	Song, Xiaozheng,et al."High-accuracy angle detection for ultra-wide-field-of-view acquisition in wireless optical links".光学工程 (2008).