Design And Implementation Of A Hardware-in-the-loop Simulation System For SAR

The hardware-in-the-loop simulation technology is often used to imitate the radar working circumstance, which is one of the most important instruments for Synthetic Aperture Radar (SAR) studying and exploiting. This new technology improve the simulation reliability by insert the real hardware in the simulation system loop, which made it become an important method of SAR system associated debugging and performance evaluation. The design and implementation of the hardware-in-the-loop simulation system based on re-acted simulate mode are studied in this thesis.At first, the design principle and system configuration of the hardware-in-loop simulation system based on re-act simulated mode are worked out, and the SAR system character and the target echo simulation method are introduced, with also the key technology and major difficulties of the design are summed up, which are being discussed in detail as following parts. Based on the determined system performance index, the detail design scheme is proposed, which are listed as the following parts: Pertinence Selection of system components; The system DA board design is finished; The mainly technology for promoting system performance, they are special design of system timing clock, read and write of Flash chip in parallel,"Ping Pong"working mode, data checkout algorithm, etc. The online and offline working mode are studied, and the control function of simulation system by software under the online mode is discussed particularly. Finally, the system error compensation is studied based on the analysis of its origin, and the simulation system function is verified by real data test, the performance index are tested, which indicates this designed simulation system achieve the desired project requirements.The hardware-in-the-loop simulation system based on re-acted simulate mode in this thesis can simulate the target echo with high precision, also can do fast storage and refresh of SAR echo data with large amount, and repeat experiments of re-act echo. The designed system provides reconfigurability and modularity that enables this new system be applied to exploitation and testing of multiple style of radar system or signal processor, which offer a new practical instrument for SAR system exploitation and testing.