System and method for removal of sea-state bias in satellite altimetry data
US7486227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2006 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jun 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/882
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for correcting bias in altimetry data for ascending satellite tracks and descending satellite tracks. For satellites operating in tandem, calculate ascending track bias between the height measurement made by the first and the second satellites for the ascending tracks in a region, calculate an ascending bias correction by least squares fitting a polynomial to the bias as a function of significant wave height for the ascending tracks, and apply a portion of the ascending track bias to the sea surface height measurements. The correction can be calculated based on only one track and its crossover points. Another embodiment uses data from only one satellite, estimates the sea state bias at the crossover points separately for the ascending and descending tracks, and apportions a percentage of the difference at the crossover points to the tracks based on minimizing the rms differences between the ascending and descending tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.