镜头畸变参数对航测像点量测精度的影响

为了得到径向畸变、切向畸变和非方形像元改正3种镜头畸变参数最优化的组合，提高航测时的像点量测精度，研究了不同畸变参数组合条件下对像点量测精度的影响。采用3种型号的镜头对辽宁工程技术大学北校区进行了航测，并利用Virtuozo AAT-PATB空三软件测试了几种典型组合下的航测结果精度。试验结果表明：在条件允许的情况下，尽可能采用较为全面的畸变参数能够最大限度地提升航测结果的精度；当条件有限时，采用K₁和K₂组合的模型可以消除大部分镜头畸变带来的影响，对结果精度的提升最为显著。研究成果可以为其他无人机航测任务提供参考。

The Influence of Lens Distortion Parameters on Measurement Accuracy of Image Points in Aerial Photogrammetry

In order to get the optimization combination of radial distortion,tangential distortion and non-square pixel correction,to improve the aerial measuring precision of image points,we studied the effect of different combination of distortion parameters on the measurement accuracy of image points.The aerial survey was conducted by three types of shots on the North Campus of Liaoning Technical University.Finally we use the Virtuozo AAT-PATB software to test the precision of survey results on several typical combinations.The results show that the distortion parameters comprehensively can greatly improve the accuracy of aerial survey results as far as possible,when conditions is well.When the condition is limited,the combination of K1 and K2 model can eliminate the influence of most lens distortion,and improve the accuracy of the results.The research results can provide reference for other UAV aerial missions.