Research on improvement method of positioning accuracy of area array image

To improve the imaging positioning accuracy of the area array camera, the airborne area array image of the northern part of Songyuan City, Jilin Province is taken as the experimental object to analyze the error and calibration of the imaging process. The imaging location of airborne area array camera has large offset errors caused by three attitude angle errors of the outer orientation elements and small distortion errors caused by internal orientation elements, such as camera lens distortion. Aiming at the above problems, the rigorous geometric positioning model is firstly used to obtain the preliminary positioning results of the area array image. Then, the resection and polynomial additional parameter models are used to solve the error caused by the internal and external orientation elements, and the more accurate positioning results are obtained. Finally, the experimental verification is carried out. The test results show that after the error calibration of the internal and external azimuth elements, the accuracy can be controlled within 5 m, and the accuracy can be improved by 94.37％. The treatment effect is remarkable. By studying the error generated by the internal and external orientation elements in the calibration area array imaging process, the positioning accuracy of the area array camera is improved, which has certain value and scientific reference for the application and promotion of area array camera imaging.