Comparing range data across the slow-time dimension to correct motion measurement errors beyond the range resolution of a synthetic aperture radar

Patent · Tue Aug 17 00:00:00 EDT 2010

OSTI ID:1013812

Doerry, Armin W ^[1]; Heard, Freddie E ^[1]; Cordaro, J Thomas ^[1]

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1. Albuquerque, NM

Motion measurement errors that extend beyond the range resolution of a synthetic aperture radar (SAR) can be corrected by effectively decreasing the range resolution of the SAR in order to permit measurement of the error. Range profiles can be compared across the slow-time dimension of the input data in order to estimate the error. Once the error has been determined, appropriate frequency and phase correction can be applied to the uncompressed input data, after which range and azimuth compression can be performed to produce a desired SAR image.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• Assignee: Sandia Corporation (Albuquerque, NM)
• Patent Number(s): 7,777,665
• Application Number: 12/120,270
• OSTI ID: 1013812
• Country of Publication: United States
• Language: English