摘要
对基于嵌入式平台的自动导星系统进行研究,设计了以ARM7为核心的自动导星系统。使用改进型质心算法以简化算法复杂度,实现导星分辨力达1/10pixel,导星灵敏度达8等星。配合赤道仪的使用,为其增加反馈机制,使之具有自动修正误差的能力,提高了跟踪精度,满足了深空星体的拍摄要求。该系统具有体积小,成本低、携带方便且导星精度及灵敏度高等特点。
An automatic star tracking system based on embedded platform is studied in this paper, which is realized on the ARM7 platform. Modified centroid- calculating is used to simplify the complexity of algorithm, the acquired resolution of the automatic star tracking system was up to 1/10 pixel, and the detection threshold reached magnitude of 8. This system enhances the tracking accuracy of equatorial mount by bringing in a feedback mechanism, it can be used in deep space astrophotography. The present automatic star tracking system is characterized by its small volume,low cost,portability, high accuracy and high sensitivity.
出处
《光学仪器》
2009年第4期69-73,共5页
Optical Instruments
基金
国家自然科学基金资助项目(60808030)
关键词
自动导星系统
嵌入式平台
ARM7
亚像素精度
automatic star tracking system
embedded platform
ARM7
sub-pixel accuracy
