DSP技术在线阵CCD测量系统中的应用

本文介绍数字信号处理器DSP在线阵CCD信号实时采集与处理系统中的应用。测量系统采用CCD传感器光采样与ADC数据采集、DSP数据处理三级流水线结构。结合AD采样技术， 充分发挥DSP处理器片内存储器容量大，快速灵活运算能力的特点，使用DSP片内双数据缓冲区交替对CCD进行信号采集和数据处理；在进行数据处理过程中，DSP以中断方式读取AD采样结果。文章还介绍了DSP的线阵CCD系统在LAMOST光纤定位单元定位精度检测装置中的应用。

Application of DSP in the Linear CCD measuring system

This paper introduces the application of Digital Signal Processor (DSP) in the real time data acquisition and processing system for linear CCD signal.The measuring system adopts the three-level pipeline structure:optical acquisition of the CCD sensor,data acquisition of analog to digital converter(ADC)and the data procession of DSP.Combined with the AD conversion technique,giving full play to the characteristic of large amount of on chip memory and the fast and flexible mathematical capability,DSP acquires and processes the signal of linear CCD with the on chip double buffer alternately.DSP reads the AD conversion result using the interrupt method in the procession of data processing.The paper also proposes the application of the linear CCD system based on DSP in the measuring device for the positioning accuracy of the positioning unit in the optical fiber positioning system for LAMOST.