Design and implementation of scintillation index measuring system based on ARM9

Most research on the scintillation index of laser beam in turbulent atmosphere is limited to numerical method. Based on this point, a scintillation index measuring system (SIMS) based on embedded MCU of ARM9 is designed and realized. The hardware circuit was built on the microprocessor S3C2440; and the software system was transplanted the embedded Linux operating system. The scintillation index of laser beam in a real turbulent atmosphere by using the SIMS is experimentally investigated. The SIMS is proved to be an effective and exact real-time system for measuring scintillation index by comparing the results of experimentally investigation and theory simulation.