Abstract: Sensor models are of particular importance to stereo measurements and image rectification.There have been so many researches on satellite camera models.In general,sensor models for satellite imagery can be categorized into two groups:physical and mathematical models.In this paper,according to the physical imaging process,we developed the geometric collinearity equation of pushbroom sensor with the Kepler parameters of the satellite orbit and the attitudes of sensor.By testing the sensor models on a SPOT-5 imagery,the accuracy of object location is 83.392 m.Then the authors adjust the Kepler parameters and attitudes by using one single GCP,the planimetric precision reaches 14.217m on the ground.Thus,the validity of the geometric model has been verified.