机载GPS天线与摄影机偏心测定方法及精度讨论

The Method and Accuracy of the Determination of Deviation between Camera and GPS Antenna

在ＧＰＳ辅助空中三角测量中，机载ＧＰＳ接收天线与航摄相机中心之间的偏心分量测定是一项重要的工作。介绍了三种测定该偏心分量的方法及适用场合，并对偏心分量测定和转换中所涉及的有关问题及ＧＰＳ辅助空中三角测量区域网平差对偏心值测定精度的要求进行了讨论。试验证实了所提出的偏心测定方法是正确的。

In GPS-aided aerotriangulation,the determination of deviation between the airborne GPS antenna and the camera is an important work. In this paper,three deviation determination method and the conditions for their implementation are introduced. Furthermore,some problems concering the determination and transformation of deviation and the accuracy requirements of GPS-aided block adjustment to the determination of devistion are also discussed.The correctness of presented deviation determination methods is tested with practice.