The Cross-Calibration, Validation And Merging Of JASON-1 And TOPEX/POSEIDON Data In The China Seas And Northwest Pacific Ocean

The successful flight of TOPEX/POSEIDON offers the longest time serial data (thirteen years) of single satellite altimeter up to now. Jason-1 was launched on Vandenberg Air Force Base of U. S. on Dec.7, 2001, which aims at continuing the TOPEX/POSEIDON satellite data which is valuable for ocean and environment research. As the follow-on satellite of TOPEX/POSEIDON, Jason-1 inherits quite a lot of characteristics from TOPEX/POSEIDON. First of all, research about the accuracy and the coherence of the data compared with TOPEX/POSEIDON has been done in this thesis. Secondly, JASON-1 sea surface height is corrected with the improved tidal correction scheme in Chinese continental shallow waters and then the corrected result is verified by the tide gauges data. Thirdly, the sea surface height product with better accuracy is produced by merged data which derive from the tandem phase of the two altimeters.The results could be summarized as below:1,Making use of JASON-1 and TOPEX/POSEIDON data during the verification phrase in the China Seas and Northwest Pacific Ocean, parameters such as the sea surface wind speed,significant wave height,backscatter coefficient and sea surface height et al are compared systematically, as well as analyzing of the coherence.The results show that the ocean circumstance parameters of TOPEX/POSEIDON and JASON-1 have distinct pertinence. As the follow-on satellite of TOPEX/POSEIDON, JASON-1 makes the continuity of TOPEX/POSEIDON dataset possible. Quantitative comparisons indicate that the mean bias of the wind speed is 0.45 m/s, standard deviation of 0.54 m/s and the correlation of 0.96. The mean bias of significant wave height is 0.058 m, standard deviation of 0.17 m and the correlation of 0.98. The mean bias of backscatter coefficient is -2.38 dB, the standard deviation of...