CAJ | 학술논문

针对控制点获取较困难地区有理多项式（RPC）模型定位精度不高的情况，提出了一种利用直线特征进行 RPC 模型精度优化的算法。该算法借鉴利用地面控制点进行 RPC 模型系统误差补偿的基本原理，通过对物方和像方直线特征的参数化表达，实现了基于直线特征的 RPC 模型系统误差补偿。利用该算法以及传统方法对资源三号（ZY-3）卫星影像进行实验。结果表明：在缺少地面控制点的情况下，利用直线特征对 RPC 模型进行精度优化是可行的；当地面控制线数量达到4条以上时，优化后 RPC 模型的定位精度可以达到与同等数量控制点相当的水平。
침대공제점획취교곤난지구유리다항식（RPC）모형정위정도불고적정황，제출료일충이용직선특정진행 RPC 모형정도우화적산법。해산법차감이용지면공제점진행 RPC 모형계통오차보상적기본원리，통과대물방화상방직선특정적삼수화표체，실현료기우직선특정적 RPC 모형계통오차보상。이용해산법이급전통방법대자원삼호（ZY-3）위성영상진행실험。결과표명：재결소지면공제점적정황하，이용직선특정대 RPC 모형진행정도우화시가행적；당지면공제선수량체도4조이상시，우화후 RPC 모형적정위정도가이체도여동등수량공제점상당적수평。
According to the principle of system error compensation of RPC model based on ground control points,this paper deduced RPC model system error compensation based on linear features in image space and object space by parametric expression of linear features,and carried out experiments by ZY-3 satellite images.The results show that it is feasible by using the straight line features for accuracy optimization of the RPC model when lack of GCPs.When the number of GCLs beyond 4, the accuracy can achieve the same level with equal number of GCPs.