针对相关测速算法精度不高,实时性较差的问题,提出了一种基于FPGA的空间滤波测速方法。该方法以高速线阵CCD作为光电探测器,采用FPGA实现算法过程,各算法模块设计成并行流水型运算结构。实验结果表明测速系统能够实现优于0.5%的测速精度,1kHz的输出带宽,可以应用于高精度非接触测速领域。 Aiming at the problem of low accuracy and poor real-time performance of the relevant speed measurement algorithm, a spatial filter method based on FPGA is proposed. The method uses a high-speed linear CCD as a photodetector, uses an FPGA to realize the algorithm process, and each algorithm module is designed into a parallel pipelined computing structure. Experimental results show that the speed measurement system can achieve better than 0.5% of the speed accuracy, 1kHz output bandwidth, can be applied to high-precision non-contact speed measurement.