Airborne platform attitude determination by using aerial image series

摘要

A method for determination of attitude of the airborne remote sensing platform is proposed. In this method, the attitude of airborne platform can be obtained on-line by following four steps: (i) recording the attitude of the platform at time , which serves as the initial attitude; (ii) starting from , taking aerial images using the dedicated camera fixed on the airborne platform at time ( = 0, 1, 2, ...) regularly and noting as the th ( = 0, 1, 2, ...) aerial image; (iii) calculating the attitude change between every two adjacent images; (iv) determining the attitude of the platform at a time according to the initial attitude and the related attitude change. Simulation results proves the theoretical feasibility of the method. The attitude error sources are also be analysed. The attitude accuracy is proportional to focal length, field angle and matching accuracy of the corresponding points. Physical experiments were carried out to illustrate the feasibility and effectiveness of the proposed method.