Design And Implement Of Multiple Interrupt High Speed Transmission System In Remote Sensing Satellite Image Simulator

In recent years,the remote sensing satellite has been extensively investigated and it has played a prominent role in military area and daily life.Developing the satellite image transceiver system which matches the satellite system has been attracting more and more attention because of the inconvenience and high cost of joint debugging with the satellite on orbit.After investigating the research status and summarizing the trends of satellite image transceiver system,the scheme of high speed image transceiver system with multiple interrupt has been proposed on basis of the specific requirements of the system.The satellite simulator consists of different modules.As for the hardware architecture based on PCI-E bus interface and FPGA chip which is adopted by the simulator,the DMA transmission scheme is proposed to solve the existing problems about the continuous high speed transmission of multiple images.The scheme consists of transmission engine,reception engine and DMA registers control logic.Meanwhile the multi-interrupt controller has been designed in order to solve the conflict of different interruptions and ensure the orderly continuous transmission of multiple images,and then it detailed the scheme about how to realize the live transmission of the continuous image.The software system including the WDM drive program and the MFC application program has also been designed in the platfrom of Windows XP operating system to simulate the process that the image data transmitted to the follow-up circuit,and the software can also control the DMA transmission process in real time and realize the diaplay or saving of image data.In the end,both the hardware and software modules were tested and verified.Hardware tests were based on functional verification of the DMA transmission controller,the multi-interrupt controller and the continuous transmission of multiple images,while software tests aimed at verifying the function of drive program and application program,the test of the DMA transfer bandwidth was also needed.Result showed that the function of each module in satellite transceiver system was normal,the software and the hardware worked cooperatively well and the transmission speed of DMA controller met the design requirement.The whole transmission system met the needs of the project and laid the foundation of further research and development.