| 基于PCl-Express高速图像采集卡对扩展源大气倾斜量的实时补偿 |
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| 引用本文： | 杨靖文,陈善球,熊耀恒,饶长辉.基于PCl-Express高速图像采集卡对扩展源大气倾斜量的实时补偿[J].天文研究与技术,2011,8(2). |
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| 作者姓名： | 杨靖文 陈善球 熊耀恒 饶长辉 |
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| 作者单位： | 杨靖文,Yang Jingwen(中国科学院国家天文台云南天文台,云南,昆明,650011;中国科学院光电技术研究所自适应光学研究室,四川,成都,610209;中国科学院研究生院,北京,100049);陈善球,饶长辉,Chen Shanqiu,Rao Changhui(中国科学院光电技术研究所自适应光学研究室,四川,成都,610209;中国科学院自适应光学重点实验室,四川,成都,610209);熊耀恒,Xiong Yaoheng(中国科学院国家天文台云南天文台,云南,昆明,650011) |
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| 摘 要： | 为能够实时补偿大气湍流对月球激光测距带来的渡前倾斜量误差,采用相关跟踪自适应光学系统,并根据其大计算量、高实时性的要求,创新地设计了基于PCI-Express高速图像采集卡及其硬实时操作系统驱动程序,完成对扩展源目标大气倾斜量的实时补偿.详细介绍了整体系统的软硬件设计,给出了一种PCI-Express高速图像采集卡设计结果及其RTAI实时驱动程序的软件设计结果,完成了进一步提高图像传输速度,减小相关跟踪系统系统延迟,提高系统响应带宽的目标,最终实现了图像数据的实时传输(≤28 μS)及波前倾斜量的实时补偿(≤348 μS).
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| 关 键 词： | 月球激光测距 |
The Real-Time Compensation of Wavefront Tilt for Extended Source Objects Based on a High-Speed PCI-Express Image Acquisition System |
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| Yang Jingwen,Chen Shanqiu,Xiong Yaoheng,Rao Changhui.The Real-Time Compensation of Wavefront Tilt for Extended Source Objects Based on a High-Speed PCI-Express Image Acquisition System[J].Astronomical Research & Technology,2011,8(2). |
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| Authors: | Yang Jingwen Chen Shanqiu Xiong Yaoheng Rao Changhui |
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| Institution: | Yang Jingwen1,2,4,Chen Shanqiu2,3,Xiong Yaoheng1,Rao Changhui2,3(1.National Astronomical Observatories/Yunnan Observatory,Chinese Academy of Sciences,Kunming 650011,China,2.The Laboratory on Adaptive Optics,Institute of Optics and Electronics,Chengdu 610209,3.The Key Laboratory on Adaptive Optics,4.Graduate University of the Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | We use a correlation tracking adaptive optics system to compensate the wavefront tilt in lunar laser ranging caused by atmospheric turbulence in real time.To handle large computational amounts and meet high real-time requirements,we innovatively design a high-speed image acquisition card based on PCI-Express and a hardware RTAI real-time operating system driver so as to compensate atmospheric tilt for extended source objects in real time.After analyzing the hardware and software designs of the entire system... |
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| Keywords: | PCI-Express FPGA RTAI Linux |
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