Analysis of high resolution two line array camera stereo georeferencing accuracy

Abstract

The stereo images acquired by two line array camera of high resolution optical remote sensing satellite has been widely used in georeferencing of observed scene, and the georeferencing accuracy in plane and height without ground control points has significant importance for the geometric performance assessment, which can provide reference for design of the satellite platform and the remote sensor. According to the stereo georeferencing method, the theory of multivariate function error estimation and the assessment principle based the circular error probable, the stereo georeferencing accuracy algorithm of the two line array camera is derived and the influence of the stochastic error and the systematic error is analyzed with the parameters of the satellite platform and the remote sensor, which show that the plane accuracy is 25.53 m and the height accuracy is 29.01 m in condition that only the stochastic error is taken into account. After the systematic error is introduced, the plane accuracy is 26.75 m and the height accuracy is 43.98 m, which relate to the value of systematic error. This method that stochastic error and the systematic error are considered simultaneously is applicable to analyze the stereo georeferencing accuracy of high resolution two line array cameras.