In order to resolve the problem which is the large cost of time and material resources when the ground real-time compression storage unit needs connect to the CCD camera

and improve the efficiency of the testing the ground real-time compression storage system

the image simulator system is designed and uses FPGA to realize the timing and logic control. The data is communicated between the USB 2.0 bus interface and the PC

and downloaded to FLASH. Meanwhile the self-check figure created by FPGA also simulates CCD output. And in order to make sure the high-speed transmission between data and space camera real-time compression storage unit

the system uses synchronous serial LVDS interface and high-speed Gbps interface and Camera Link interface. The result proves that the speed of data download comes to 40 Mbyte/s from USB interface

and there’s no fault and lose when data transmitted between synchronous serial LVDS interface and high-speed Gbit/s interface. So the system is stable and reliable.