Invention Grant
- Patent Title: Bistatic inverse synthetic aperture radar imaging
- Patent Title (中): 双向反合成孔径雷达成像
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Application No.: US13847764Application Date: 2013-03-20
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Publication No.: US09335409B2Publication Date: 2016-05-10
- Inventor: Theagenis J. Abatzoglou , Johan E. Gonzalez
- Applicant: RAYTHEON COMPANY
- Applicant Address: US MA Waltham
- Assignee: Raytheon Company
- Current Assignee: Raytheon Company
- Current Assignee Address: US MA Waltham
- Agency: Burns & Levinson LLP
- Agent Joseph M. Maraia
- Main IPC: G01S13/89
- IPC: G01S13/89 ; G01S13/90 ; G01S7/295 ; G01S13/58

Abstract:
A bistatic synthetic aperture radar (SAR) imaging system and method include: combining each radar return pulse from airborne radar platforms with a sinusoid; deskewing each reduced radar return pulse; estimating motion parameters based on a maximum likelihood estimation (MLE); performing MLE motion correction to generate motion-corrected radar return pulses; acquiring position and velocity estimates of the airborne radar platforms and scattering locations; defining bistatic range and velocity vectors; defining new bistatic range and velocity vectors in a new set of orthogonal axes; projecting vector distance differences between the radar scattering locations along the new set of orthogonal axes to generate new range and velocity measurements along the new set of orthogonal axes; converting the new range and velocity measurements to map Doppler frequency into cross-range; and forming a bistatic SAR image in range and cross-range based on cross-range extent derived from the Doppler frequency mapping.
Public/Granted literature
- US20140285371A1 BISTATIC INVERSE SYNTHETIC APERTURE RADAR IMAGING Public/Granted day:2014-09-25
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