Technology about surveying sea surface changes based on satellite

The accuracy of altimeter of the TOPEX/Poseidon satellite (T/P) on s urveying the sea level height had achieved quasi-centimeter scale. Lots of data about satellite surveying on sea surface provided wide applied information for the study of global or regional sea surface changes and the diversified aims of oceanography. The article looked back the background of technology about T/P sat ellite altimetry,introduced technology about T/P satellite's precise orbit;and the article discussed the principle that satellite altimetry surveyed the sea l evel changes,the methods of correction to error,and the altimetry data process ing for example T/P satellite. In addition,the article introduced the primary r esults that the data of satellite surveying on sea surface was used to study on sea surface changes in China,pointed out the existent problems and the solution methods.