Variable structure control for three-dimensional information of double targets

	Variable structure control for three-dimensional information of double targets
	Li, Y.; E.-D. Zhang and J.-P. Zhou
	2016
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号	24 期号:1
摘要	During the onboard imaging process of space camera with large field of view, due to the effects of earth rotation, satellite attitude maneuverings, jittering and other factors, image motion velocity field of the focal plane has a non-linear anisotropic distribution. To overcome this problem, a novel image motion velocity field modeling method which is based on kinematics of rigid body was proposed. In this model, off-axis angle parameter was introduced and formulas of image motion velocity field in the large view off-axis three-mirror system were derived. Taking a certain large field space camera as an example, influences of synchronous and asynchronous velocity matching models on the camera image qualities were analyzed. Results show that, under a constraint of 5% drop and with scroll angle of 15, if integral stages are larger than 10, asynchronous velocity matching models should be adopted. Especially when integral stages are fixed to 32, its dynamic MTF on focal plane can be improved to 0.9702 whileit is 0.3408 in the synchronous model case. However, synchronous velocity matching model outperforms in the condition of 16 integral stages and 12.3 scroll angle. Onboard imaging experiments proved the accuracy of the models which will provide a reliable basis for large field space camera image motion compensation. 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
文章类型	期刊
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57044
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li, Y.,E.-D. Zhang and J.-P. Zhou. Variable structure control for three-dimensional information of double targets[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2016,24(1).
APA	Li, Y.,&E.-D. Zhang and J.-P. Zhou.(2016).Variable structure control for three-dimensional information of double targets.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,24(1).
MLA	Li, Y.,et al."Variable structure control for three-dimensional information of double targets".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 24.1(2016).

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