应用GPS授时时角拍星法标校测角精度

The calibration of angle measurement accuracy by means of time-angle star photographing using GPS

在用拍星法标校高精度测角设备过程中,针对通常采用天文授时存在的授时难、理论值误差大等问题,提出了应用 GPS 授时时角拍星法进行拍星标校。授时精度的提高和新时角算法的运用,大大提高了拍星标校的理论值精度,标校精度可达 5″以内,并在高精度测角设备上得以应用。

During the process of calibrating high precision angle measurement system, it often meets with the problems such as difficult to get accurate time and big theoretical error. A method based on time-angle star photographing using GPS is proposed in the paper. The improvement of timing accuracy and the application of time-angle algorithm greatly enhances the theoretical accuracy of star photographing with a calibration accuracy within 5″ which is applied in a high-precision angle measuring system successfully.