The invention belongs to the technical field of space
remote sensing surveying and mapping, and particularly relates to a
monitoring system and method for a front and rear view
visual axis included angle and absolute direction of a surveying and mapping camera. The method comprises the following steps: S1, through side sway of a
satellite platform, taking a time for
sky imaging calibration as a reference time; s2, calculating a
rotation matrix from a front and rear view ground camera measurement coordinate
system to a star camera coordinate
system at a reference moment; s3, calculating respective
thermal deformation matrixes of the star camera coordinate
system, the front-
view camera measurement coordinate system and the rear-
view camera measurement coordinate system; s4, obtaining a real-time
rotation matrix from the measurement coordinate system of the front-
view camera to the coordinate system of the star camera and a real-time
rotation matrix from the measurement coordinate system of the rear-view camera to the coordinate system of the star camera at the measurement moment; and S5, carrying out arc cosine calculation on the two absolute pointing vectors to obtain a
visual axis included angle between the front-view camera and the rear-view camera at the measurement moment. According to the invention, while the geometric accuracy of the surveying and mapping camera is ensured, the real-time performance of measurement and the comprehensiveness of subsystem monitoring are realized at the same time.