Method of observing sea ice

Details Method of observing sea ice Method of observing sea ice

2006-08-22

2006-08-22

Gregory, Bernarr E. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Radar for meteorological use

C342S022000, C342S02500R, C342S02500R, C342S02500R, C342S02600R, C342S052000, C342S104000, C342S118000, C342S175000, C342S188000, C342S195000, C367S087000, C367S089000

Reexamination Certificate

active

07095359

ABSTRACT:
An ice thickness/drifting velocity observation of sea ice by using an ice thickness measurement sonar and a current meter moored into the sea and a sea ice observation by a high-resolution airborne SAR are synchronously performed, a correlation between a draft profile of sea ice passing over the sonar and an SAR backscattering coefficient profile is calculated, and an ice draft of desired sea ice is calculated from the relational expression and an SAR backscattering coefficient. As the SAR backscattering coefficient, a backscattering coefficient of L-band HV polarization may be used. A backscattering coefficient of X-band VV polarization is preferably used as the SAR backscattering coefficient to detect thin ice having a thickness of not more than approximately 10 cm.

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