Inventors:
Ana Martinez - Albuquerque NM, US
Armin W. Doerry - Albuquerque NM, US
Douglas L. Bickel - Albuquerque NM, US
Assignee:
Sandia Corporation - Albuquerque NM
International Classification:
G01S013/90
US Classification:
342 25C, 342 25 R, 342 25 A, 342 25 F, 342118, 342123, 342147, 342156, 342175, 342195
Abstract:
A multi-antenna, multi-pass IFSAR mode utilizing data driven alignment of multiple independent passes can combine the scaling accuracy of a two-antenna, one-pass IFSAR mode with the height-noise performance of a one-antenna, two-pass IFSAR mode. A two-antenna, two-pass IFSAR mode can accurately estimate the larger antenna baseline from the data itself and reduce height-noise, allowing for more accurate information about target ground position locations and heights. The two-antenna, two-pass IFSAR mode can use coarser IFSAR data to estimate the larger antenna baseline. Multi-pass IFSAR can be extended to more than two (2) passes, thereby allowing true three-dimensional radar imaging from stand-off aircraft and satellite platforms.