| With more and more widely using of space exploration, space-based detection system has been studied and developed by countries all over the world to achieve high precision, real time and large measuring range earth and space observation. As one of the space-based detection system, transient light signal detection system is used to monitor variety kinds of lightning signals, space radiation, light signal of explosion and so on. It can be applied to many research fields and be used in both military and civil, as a result it has received extensive attention and made significant space for development.Depending on application requirements, a design scheme of space transient detection system was proposed in this paper. Firstly, the features of the target light signal and the strong sunlight background were analyzed. The sub-system of the whole system named energy signal acquisition is introduced. Secondly, based on the analysis of signals and the requirement equipment during the further experimental process, the paper expounded design scheme of transient light signal simulator based on FPGA and LED in details. Thirdly, the hardware design of space transient light energy signal detection system was introduced, software and hardware design of signal acquisition and processing were mainly discussed. The control and data processing logic and timing sequence were described by the hardware description language Verilog based on FPGA hardware platform. According to the timing simulation, the logical design was validated and could realize function of transient light signal data acquisition, processing, storing and transmitting.Finally in process of experimental verification, the test results were obtained through combination of signal simulator, detection system and lower computer system. The results present that the system can real-time detect target signal and monitor the system parameters. The design proposal is feasible and also with widely engineering application. |
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