卫星遥感影像RPC参数求解算法研究

The Algorithm of Computation RPC Model's Parameters for Satellite Imagery

针对国内外在求解RPC模型参数算法上需要初值、迭代处理,且求解过程相当复杂的缺憾,提出了基于全球DEM的RPC模型参数求解算法,利用SPOT-5、CBERS-2以及ERS卫星影像进行实验,获得对卫星遥感影像几何处理有意义的结论,并对卫星影像在利用严格成像几何模型求解RPC模型参数时做了控制点格网大小及高程分层数对求解精度的影响实验,得出对卫星遥感影像,采用控制点的格网大小为20×20、高程分层为3可以达到精度和效率的平衡。

The RPC model has recently raised considerable interest in the photogrammetry and remote sensing community. The RPC is a generalized sensor model that is capable of achieving high approximation accuracy, In this paper an algorithm of computation of parameters of RPC model without initial value is presented. Finally we test the algorithm on SPOT-5, CBERS-2, ERS imagery.