Abstract
Geosynchronous spaceborne-airborne bistatic synthetic aperture radar (GEO SA-BSAR), consisting of GEO transmitter and airborne receiver, has stable coverage for a long time and benefits moving target detection. However, the performance of GEO SA-BSAR moving target indication (MTI) system varies widely between bistatic configurations. The traditional configuration design for GEO SA-BSAR system only considers the imaging performance, which may cause the poor MTI performance. In this paper, we propose a bistatic configuration design method to jointly optimize the MTI and SAR imaging performance for GEO SA-BSAR MTI system. The relationship between the MTI performance and bistatic configuration parameters is derived analytically and analyzed based on the maximum output signal to clutter and noise ratio (SCNR) criterion. Then, the MTI performance and SAR imaging performance are jointly considered to model the configuration design problem as a multi-objective optimization problem under the constrained condition. Finally, the optimal configuration for GEO SA-BSAR MTI system is given.
Highlights
Bistatic synthetic aperture radar (BSAR), whose transmitter and receiver are located on different platforms, has attracted much attention in recent years
It obtain the bistatic configuration that ensures GEO spaceborne-airborne BSAR (SA-BSAR) system has the best performance of moving target indication (MTI) while imaging stationary scene, which extends the function of GEO SA-BSAR system
The imaging performance indicators of GEO SA-BSAR imaging system mainly include the ground range resolution ρgr, the azimuth resolution ρaz, the resolution direction angle ζ and the clutter to noise ratio (CNR) (Since the stationary scene is regarded as the clutter in MTI, the signal to noise ratio (SNR) of the stationary target is as the CNR in this paper)
Summary
Bistatic synthetic aperture radar (BSAR), whose transmitter and receiver are located on different platforms, has attracted much attention in recent years. As early as 1997, the system with geosynchronous illumination and bistatic reception was first proposed for large coverage monitoring and MTI [23] It only analyzed the feasibility of MTI based on the system parameters without considering the configuration design and data processing. This paper proposes a configuration design method of GEO SA-BSAR MTI system to achieve the optimal MTI performance while ensuring good SAR imaging performance. It obtain the bistatic configuration that ensures GEO SA-BSAR system has the best performance of MTI while imaging stationary scene, which extends the function of GEO SA-BSAR system. Wavelength Bandwidth Receiver’s height Receiver’s velocity Synthetic aperture time Number of channels Antenna size
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
