Characteristics of the altimetry waveform are studied for more accurate sea surface height measurement in the paper. And based on the existing methods, the leading‐edge‐detection‐based multi‐leading edge and multi‐threshold waveform retracking method is presented. Then, the method is applied to the waveform processing over the China offing sea to improve the precision and resolution of altimetry. As a validation, the gravity anomaly data are computed from the retracked data and compared with the ship‐born gravity. Results show the method can improve the altimetry precision greatly.
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