| 基于自准直法的长焦距CCD航空相机的离焦补偿 |
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| 引用本文： | 赵育良,许兆林,张玉叶.基于自准直法的长焦距CCD航空相机的离焦补偿[J].红外,2011,32(2):5-8,23. |
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| 作者姓名： | 赵育良 许兆林 张玉叶 |
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| 作者单位： | 海军航空工程学院青岛分院,山东,青岛,266041 |
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| 摘 要： | 为了对长焦距航空相机的离焦进行补偿,设计了一种基于自准直的离焦补偿系统.该系统首先采用高度自动化和智能化的光电自准直离焦补偿法实现离焦量的校正,然后通过引入飞机高度数据进行离焦量计算,并通过相应装置实现离焦校正.在校正过程中,采用效率更高的改进爬山算法进行准确焦面定位,利用FPGA硬件系统进行数据处理,并通过VHDL语...
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| 关 键 词： | 离焦补偿 航空相机 自准直 动态可编程硬件 爬山算法 |
Defocusing Compensation System for Aerial Long Focal Length Camera Based on Autocollimation |
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| ZHAO Yu-liang,XU Zhao-lin,ZHANG Yu-ye.Defocusing Compensation System for Aerial Long Focal Length Camera Based on Autocollimation[J].Infrared,2011,32(2):5-8,23. |
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| Authors: | ZHAO Yu-liang XU Zhao-lin ZHANG Yu-ye |
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| Affiliation: | (Qingdao Branch,Navy Aeronautical and Astronautical University,Qingdao 266041,China) |
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| Abstract: | An autocollimation-based defocusing compensation system is designed for an aerial long focal length camera.In the system,a high automation and high intelligence optoelectronic autocollimation defocusing compensation method is firstly used to correct the defocusing distance;then,the data about the altitude of an aircraft is incorporated to calculate the defocusing distance;and finally,a related device is used to implement defocusing compensation.In the defocusing compensation process,a modified hill-climbing algorithm is used to locate the focal surface accurately.A FPGA hardware system is used for data processing and its hardware function is realized by using the VHDL language. |
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| Keywords: | defocusing compensation aerial camera autocollimation FPGA hill-climbing algorithm |
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