CAJ | 학술논문

激光测高仪可以快速高精度获取地面高程信息，弥补卫星光学遥感影像三维信息获取能力的不足。采用高精度激光测高数据作为控制信息，符合卫星摄影测量尽量减少地面控制点的发展趋势。文章首先介绍了实际卫星立体测绘中难以解决的问题，结合激光测高的特点，设计了星载激光测高仪辅助空中三角测量立体测绘的方案。根据摄影测量观测方程和激光测高仪对地观测方程，以及卫星影像和激光测高数据外方位元素之间的联系，由光束法平差原理建立观测误差方程。对星载激光测高仪进行定位精度理论分析，采用高精度激光测高数据可以作为高程控制，提高高程观测精度。最后对卫星摄影测量数据与星载激光测高数据联合平差仿真实验，实验结果表明定位精度明显提高。
격광측고의가이쾌속고정도획취지면고정신식，미보위성광학요감영상삼유신식획취능력적불족。채용고정도격광측고수거작위공제신식，부합위성섭영측량진량감소지면공제점적발전추세。문장수선개소료실제위성입체측회중난이해결적문제，결합격광측고적특점，설계료성재격광측고의보조공중삼각측량입체측회적방안。근거섭영측량관측방정화격광측고의대지관측방정，이급위성영상화격광측고수거외방위원소지간적련계，유광속법평차원리건립관측오차방정。대성재격광측고의진행정위정도이론분석，채용고정도격광측고수거가이작위고정공제，제고고정관측정도。최후대위성섭영측량수거여성재격광측고수거연합평차방진실험，실험결과표명정위정도명현제고。
As a way of acquiring elevation with high accuracy and effectiveness, laser altimeter can im-prove the capability of 3-dimensional earth observation of satellite optical remote sensing imagery. And using high accuracy elevation observation of space-borne laser altimeter as control points accords with the trend of satellite photogrammetry without ground control points. In this paper, the problems of satellite photogrammetry are firstly introduced, and then the method of space-borne laser altimeter supported aerotriangulation is de-scribed, which can solve these problems due to the characteristics of laser altimeter. The bundle adjustment er-ror equations are established according to the earth observation of satellite image and space-borne laser altime-ter, as well as the relationship of their exterior orientation elements. Elevation observations supplied by laser altimeter can be used as elevation control points to improve the accuracy of aerotriangulation and the position-ing accuracy. Finally, the improvement of positioning accuracy is shown in simulation aerotriangulation ex-periment of satellite image and space-borne laser altimeter.