GPS 全球定位系统在航空遥感精确定位中的应用

Application of Global Positioning System in High Accuracy point Determination of Airborne Remote Sensing Data

本文综述全球定位系统(GPS)在航空遥感自动精确定位中的应用现状和发展前景,着重叙述了GPS用于航空遥感定位的可能性和用机载GPS接收机按相位差分法进行航空遥感定位(空中三角测量)的一个典型试验结果。理论研究和实验表明,由于动态GPS定位技术具有很高的精确性和可靠性,它可用于从1:500到1:10万比例尺的各种地形图和专题图制作,以及诸如坐标地籍等高精度点位测定。文中还展望了GPS技术在航空、航天遥感中进一步利用的可能性。

The present status and future development about the application of GPS in high accuracy point determination of airborne remote sensing data are briefly summerized. The emphases are to describe the applicability of GPS in airborne remote sensing and to give a typical axperi-ment result of aerotriangulation by using differential phase GPS measurement. Theoretical investigation and practical test show that kinematic GPS technique can be used for topographic and thematic mapping with a scale from 1:500 to 1:100 000, as well as for high accuracy point determination such as coordinate cadastre because it provides very high accuracy and reliability. The prospective applications of GPS technique in airborne and Spaceborne remote sensing are also discussed.