摘要
垂线偏差的测量过去一直受天文坐标测量困难的影响而效率低下 为了快速、精确地测得垂线偏差 ,提出了利用大面阵CCD构成数字天顶摄影仪 ,对拍摄的恒星影像进行搜索、细分定位处理 ,计算出测站点的天文坐标的基本原理 ;再根据GPS测得的大地坐标 ,解出垂线偏差 并且结合本系统自身的条件 ,提出了快速在大面阵CCD图象中搜索多个恒星目标的新方法 通过软件模拟 。
The efficiency of measurement of vertical deflections was low-level due to the fact that the determination of astronomical coordinates still was difficult. In order to improve it, the digital zenith camera composed of a large-area CCD came into use. The basic principle of measurement mentioned: Firstly practice photography to zenith, searching and subdividing the objects in the sidereal image, computing the astronomical coordinate of the measure position, then combining with the geodetic coordinates measured GPS-equipment (Global Position System), lastly calculate the vertical deflections. With the system itself information, a new arithmetic advanced about rapidly searching for sidereal. This method is verified using process simulation.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2004年第2期248-251,共4页
Acta Photonica Sinica
关键词
垂线偏差
图象处理
天体测量
数字天顶摄影仪
Vertical Deflection
Image Processing
Astronomical Measurement Technique
Digital Zenith Camera
