The accuracy of spot centroid positioning has a significant impact on the tracking accuracy of the system and the stability of the laser link construction.In satellite laser communication systems,the use of short-wave...The accuracy of spot centroid positioning has a significant impact on the tracking accuracy of the system and the stability of the laser link construction.In satellite laser communication systems,the use of short-wave infrared wavelengths as beacon light can reduce atmospheric absorption and signal attenuation.However,there are strong non-uniformity and blind pixels in the short-wave infrared image,which makes the image distorted and leads to the decrease of spot centroid positioning accuracy.Therefore,the high-precision localization of the spot centroid of the short-wave infrared images is of great research significance.A high-precision spot centroid positioning model for short-wave infrared is proposed to correct for non-uniformity and blind pixels in short-wave infrared images and quantify the localization errors caused by the two,further model-based localization error simulations are performed,and a novel spot centroid positioning payload for satellite laser communications has been designed using the latest 640×512 planar array InGaAs shortwave infrared detector.The experimental results show that the non-uniformity of the corrected image is reduced from 7%to 0.6%,the blind pixels rejection rate reaches 100%,the frame rate can be up to 2000 Hz,and the spot centroid localization accuracy is as high as 0.1 pixel point,which realizes high-precision spot centroid localization of high-frame-frequency short-wave infrared images.展开更多
TH773 2001010691中红外与短波红光综合治疗仪的研制:Developmentof middle and short wave IR synthetictreatmenters[刊,中]/徐景智,杨景发,陈永申,赵庆勋,葛大勇(河北大学物理系.河北,石家庄(070002))∥红外.-2000,(5).-22-26论述了...TH773 2001010691中红外与短波红光综合治疗仪的研制:Developmentof middle and short wave IR synthetictreatmenters[刊,中]/徐景智,杨景发,陈永申,赵庆勋,葛大勇(河北大学物理系.河北,石家庄(070002))∥红外.-2000,(5).-22-26论述了中红外与短波红光综合治疗仪的设计原理,描述了该治疗仪的系统结构,并对该治疗仪的功能与适应范围进行了介绍。图7参4(董玉敏)展开更多
基金Supported by the Short-wave Infrared Camera Systems(B025F40622024)。
文摘The accuracy of spot centroid positioning has a significant impact on the tracking accuracy of the system and the stability of the laser link construction.In satellite laser communication systems,the use of short-wave infrared wavelengths as beacon light can reduce atmospheric absorption and signal attenuation.However,there are strong non-uniformity and blind pixels in the short-wave infrared image,which makes the image distorted and leads to the decrease of spot centroid positioning accuracy.Therefore,the high-precision localization of the spot centroid of the short-wave infrared images is of great research significance.A high-precision spot centroid positioning model for short-wave infrared is proposed to correct for non-uniformity and blind pixels in short-wave infrared images and quantify the localization errors caused by the two,further model-based localization error simulations are performed,and a novel spot centroid positioning payload for satellite laser communications has been designed using the latest 640×512 planar array InGaAs shortwave infrared detector.The experimental results show that the non-uniformity of the corrected image is reduced from 7%to 0.6%,the blind pixels rejection rate reaches 100%,the frame rate can be up to 2000 Hz,and the spot centroid localization accuracy is as high as 0.1 pixel point,which realizes high-precision spot centroid localization of high-frame-frequency short-wave infrared images.
文摘TH773 2001010691中红外与短波红光综合治疗仪的研制:Developmentof middle and short wave IR synthetictreatmenters[刊,中]/徐景智,杨景发,陈永申,赵庆勋,葛大勇(河北大学物理系.河北,石家庄(070002))∥红外.-2000,(5).-22-26论述了中红外与短波红光综合治疗仪的设计原理,描述了该治疗仪的系统结构,并对该治疗仪的功能与适应范围进行了介绍。图7参4(董玉敏)
