Communications: directive radio wave systems and devices (e.g. – Determining distance – Altimeter
Reexamination Certificate
2006-08-23
2009-02-03
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Altimeter
C342S02600R, C342S02600R, C342S118000, C342S165000
Reexamination Certificate
active
07486227
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.
REFERENCES:
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patent: 2004/0145514 (2004-07-01), Raney
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Mitchell Douglas A
Teague William J
Whitmer Kirk R
Bythrow Peter M
Ferrett Sally A.
Karasek John J.
Tarcza Thomas H
The United States of America as represented by the Secretary of
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