Design Of Interface Board And Main Control Interface For SAR Real-time Imaging Processor

Synthetic Aperture Radar(SAR) is a sort of high resolution imaging radar. Having the characteristics of all-weather, day/ night, and long-range, it has been widely used in both military and civilian fields. With the continuous development of high-resolution real-time imaging technologies using the unmanned aerial vehicle(UAV) as a moving carrier, the miniaturization SAR real-time imaging processor, strong in real-time processing and analyzing, has become a new research directions.This paper focuses on the development of the main control interface and the design of the interface board of a SAR real-time imaging processor. Convenient in operation, simple in usage and complete in function, the main control interface faces the operators directly, and communicates with the interface card via a Gigabit Ethernet interface. The interface board is directly responsible for function switching and system management.The development and application of SAR real-time imaging processing technology are introduced at first. Then the SAR real-time processor is presented from the overall aspect, including requirements on the processor, basic constitutions, the functional realization of the main control interface and interface board and the VPX high-speed serial bus technology.Next, the requirement analysis is performed for the functions of the interface board. And the overall scheme design of the interface board based on FPGA, DAC, and VPX highspeed serial bus. To begin with, the selection of chips including FPGA, high-speed DAC as well as power chip is introduced. And then it emphasizes on the design and realization of the signal generation module, the DDR3 module, and the Ethernet module. Finally, the basic function of the interface board is verified, the stability and the transmitting rate of the board is examined, based on which we complete of the debugging work for the interface board.Thirdly, user needs and system requirements for the main control interface are analyzed. The overall framework is design; the workflow is made; and different functions are modularized. System functions of the main control interface are realized through mutual cooperation of multiple modules. Meanwhile, the multi-thread technology and double buffer technology are used. The design of the main control interface is completed in Visual Studio 2010 with the object-oriented programming method and the MFC structure. Verification of the working stability and function completeness of the main control interface is done via the functional debugging and performance testing.A summary is made at last which mainly conclude the major work in this paper. Combined with the practical situation, the problems and deficiencies encountered during the work are presented and methods and suggestions are proposed at last.