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3761813 | Perrin | Sep 1973 | |
4359733 | Brown | Dec 1992 | |
5187485 | Tsui, et al. | Feb 1993 |
Number | Date | Country |
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WO8706335 | Oct 1987 | WOX |
Entry |
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Ingarss'89 Remote Sensing: An Economic Tool for the Nineties, vol. 4, 10 Jul. 1989, Vancouver, Canada pp. 2261-2264, XP139378. |
H. . Braun, P. Hartl "Bistatic Radar in Space a New Dimension In Imaging Radar". |