Improving the quality of JASON-1 altimetry data by waveform retracking in coastal waters off China

YANG Le; LIN Ming-Sen; ZHANG You-guang; LIU Qin-huo; PAN De-lu

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Article Navigation > Haiyang Xuebao > 2010 > 32(6): 91-101

YANG Le, LIN Ming-Sen, ZHANG You-guang, LIU Qin-huo, PAN De-lu. Improving the quality of JASON-1 altimetry data by waveform retracking in coastal waters off China[J]. Haiyang Xuebao, 2010, 32(6): 91-101.

Citation:

YANG Le, LIN Ming-Sen, ZHANG You-guang, LIU Qin-huo, PAN De-lu. Improving the quality of JASON-1 altimetry data by waveform retracking in coastal waters off China[J]. Haiyang Xuebao, 2010, 32(6): 91-101.

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Improving the quality of JASON-1 altimetry data by waveform retracking in coastal waters off China

1.
State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China; State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Adm
2.
National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China
3.
State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China
4.
State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, China

Received Date: 2010-07-26
Rev Recd Date: 2010-09-10

Abstract

Abstract

The satellite altimetry products are widely used by researchers and operational users. However, altimeter measurements over coastal waters are unavailable because of land contamination of the altimeter return waveforms and inappropriate geophysical corrections, such as the atmospheric wet troposphere correction, the ocean tide correction and the high-frequency factor correction. To shorten the unavailable distance offshore, four waveform retracking algorithms (ocean, offset centre of gravity, Ice-2, and threshold retracking algorithms) are compared using the JASON-1 altimeter measurements over China’s seas. Results, which are validated using crossover analysis and in situ sea surface height data show that the OCOG algorithm is more suitable than the other three algorithms for China’s offshore altimeter waveform retracking.
- satellite radar altimeter,
- waveform retracking,
- China’s coast

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References(35)

References

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