Title :
Back-Projection Algorithm Characteristic Analysis in Forward-Looking Bistatic SAR
Author :
Zeng, Dazhi ; Tao Zeng ; Hu, Cheng ; Long, Teng
Author_Institution :
Beijing Inst. of Technol.
Abstract :
The transmitter and receiver trajectories are extremely asymmetric in forward looking bistatic SAR (FL-BSAR), so it is difficult and not straightforward to apply general frequency domain imaging algorithms in FL-BSAR imaging. The back-projection algorithm is operating in the time domain, therefore it can be directly used for FL-BSAR image formation. In this paper, the error of the back-projection (BP) algorithm for FL-BSAR is analyzed in detail. The result of the error analysis is validated by applying the proposed error criterion on real data. Moreover, under the case of FL-BSAR, the equation describing the sidelobes of the BP algorithm in the cross-range direction is derived and presented in closed form. Finally, the derived equation is verified by simulation
Keywords :
error analysis; radar imaging; synthetic aperture radar; FL-BSAR; back-projection algorithm; cross-range direction; error analysis; forward-looking bistatic synthetic aperture radar; image formation; radar imaging; sidelobe pattern; Algorithm design and analysis; Equations; Error analysis; Frequency domain analysis; Geometry; Image analysis; Paramagnetic resonance; Trajectory; Transmitters; Unmanned aerial vehicles; BSAR; Back-projection algorithm; Error; Forward Looking; cross-range; side-lobe;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343181
