No abstract

In order to quantitatively analyze the influence of vibration on the imaging quality of aerial cameras, the optical transfer function is used to evaluate the image of vibration on imaging quality. The dynamic Modulation Transfer Function(MTF) is used to evaluate the degree of blurring of the image. And the linear portion of the Phase Transfer Function(PTF) is used to characterize the geometric deformation of the image.

In recent years, the aerial complex optomechanical system has developed greatly. The imaging quality is the most important indicator for judging the optomechanicall system. And the accuracy of optical axis pointing is the basic guarantee for imaging quality. The geometric error of the shafting existing in manufacturing is an important factor affecting the pointing accuracy of the optical axis. The correspondingly relationship between the shafting error and the optical axis pointing accuracy is established through the modeling and analysis of the geometric error of the shafting. Do the foundation for further deepening research.

The article introduces a three-axis aerial remote sensing imaging platform that can flexibly and accurately acquire ground target images in the air. Then it analyzes the impact of various complex conditions on the imaging quality, and finds that temperature change is the key factor affecting the imaging quality of the aerial remote sensing platform. The thermal field analysis of the designed optical lens part of the aerial camera was carried out. The thermal field analysis of the lens model in the finite element analysis software was used to extract the displacement vector of each node of the lens under different temperature fields. The mirror data is fitted using the Zernike polynomial program written in the matlab software. And the Zernike polynomial program brings the coefficients of the obtained zernike polynomial into the optical design software zemax for image quality evaluation, and completes the thermal field analysis of the optical system. Do the foundation for further research.