| With the rapid development of modern signal processing, the demand of researchon siganl processing speed, the signal processing bandwidth, and the signal processinggain, has been urgently raised. The demand of research on high-performance signalprocessing technology has become more urgent. Acousto-optic signal processingtechnology was derived from acousto-optic devices who has advantages of a largebandwidth, high real-time and parallel processing ability, and is widely concerned,strong invested. Acousto-optic signal processing technology is with many features, suchas high sensitivity, high gain, parallel processing. So the real-time operating system isnecessary who can provide excellent hardware and software platform for acousto-opticsignal processing. The digital processing of acousto-optic signal was completedefficiently and fast on the platform.The focus of the dissertation is to build a real-time operating system platform foracousto-optic signal processing, and preliminary processing of acousto-optic iscompleted on this platform. The main contents are as follows:1. According to the principles of convenient data backup and signal debugging,protecting signal integrity, the hardware circuit was redesigned. A good hardwarefoundation was provided for the transplant of uClinux operating system by the design.2. The transplant of uClinux operating system was completed. According to thecontrol flow of the signal, the driven programming and debugging of important externaldevices on the system platform were finished. These external devices includes SPI, PPI,USB, LCD and ethernet.3. To take full advantage of the hardware resources, the starting with the call of thedual-core and multitasking concurrent programming were designed and completed onuClinux system. The SHELL configuration was modified to complete the program autostarting when power was on. Based on the class of CasyncSocket, the graphicalinterface of the host computer server programming was completed.4. According to the collected data and the principle of acousto-optic interaction, Asimple processing algorithms were proposed and completed the initial estimates of the frequency and phase. It was applicable for the current experimental conditions, andprovided a reference for the subsequent algorithm design. |
