Abstract: Since the processing of remote sensing images is increasingly in real time,it is important to propose a new geometric correction algorithm for imagery of linear and area array charge coupled devices(CCD),which can be used to fast and accurately calculate the corrected geometric positions and resample their gray scales.In this paper,the relational expression to shift one dimensional position is proved to be a cubic multinomial,to which fast recurrence can be applied finely,and the one dimensional resample algorithm is also described,both offering great time savings.When every line of an image has been done accordingly ,the lines of longitude and latitude is indicated as well,based on positioning data given by GPS.So far,a rectified image product with complete 1B level is available.Simulation tests with PC have showed that the algorithm is believed to achieve real time capability if multiple processors are introduced appropriately.