【摘要】 星体标校技术是利用恒星在天球上的准确视位置标定光电经纬仪的指向精度。其方法主要采用两种方式：时角法和弧长法。时角法是采用恒 星视位置的计算公式，通过光电经纬仪瞄准并测量，然后与理论计算的真值进行比对，从而求出光电经纬仪的指向误差。弧长法则是利用天球中北极星与任一颗恒星弧长不变的原理而发展起来的新型技术。本文详细介绍了星体弧长法标定光电经纬仪指向精度的基本原理，对标定精度进行了分析，指出了影响其精度的因素，并对其应用到靶场的外场实时检测方法进行了探讨。更多还原

【Abstract】 Calibration technology of the star makes use of true pointing of star to calibrate pointing accuracy of electro optic phototheodolite. The method mostly use of two modes that are time angle and arc length. Time angle make use of account expressions of true pointing of star through pointing with electricity optical phototheodolite and compare with true value of theory and finally calculate the error of pointing of electro optic phototheodolite. The arc length is new type technology that depends on principle of arc length changeless to use Polaris with other star in the celestial sphere. This paper introduces the basic principle of the calibration of pointing accuracy of electro optic phototheodolite with the Star arc length. It analyzes the calibration of precision and point out the factors as attected the precision. It researches the check method in real time for the range.更多还原