Linear array push broom sensors have been widely researched and applied in the aerospace area and remote sensing applications

and have started a new approach for photogrammetry and remote sensing application Research on extrapolation of attitude parameters of push broom satellite with less ground points have become a new research It is very important to target objects in a region where it is difficult to obtain ground control points According to the characteristics of multiple central perspective imaging

we built the sensors model based on collinear equationsWe solve orientation parameters of different scan lines by space resection When the extrapolative depth is large

we take a single ground control point as the constrains The experiment data is six Spot images of the same orbit in our country We analyzed the extrapolative results: when the extrapolative depth is 240 km

the mean error is about 1 km

when extrapolation considers a single ground control point

the result is better than the former and the mean error is below 1 km We can improve our results in the future by collecting other related information for the extrapolative image