空间谱算法的快速实现研究

Research and fast-realization of spatial spectrum algorithm

针对测向系统中所需DSP数量较多、系统设计复杂、测向时效性不足的问题,研究了基于FPGA和DSP的空间谱测向算法快速实现方法。通过对浮点数据的量化仿真结果,设计了协方差矩阵、导向矢量和空间谱谱值的定点计算结构,分析了各单元所需资源及运算速度。仿真实验结果表明,经过并行化处理后,该算法实现时间可有效加快,在实际工程应用中有重要意义。

Aiming at the problem that in modern DOA system,a large amount of DSP are needed and system design is complexity and real-time performance is not so well,a method for realizing DOA of spatial spectrum based on FPGA and DSP is studied.According to the result of quantized float data simulation,the fixed-point structure of covariance matrix,oriented vector and spatial spectrum value are designed.Resources needed and the speeds of calculating are also analyzed.Simulation results show that the algorithmcan be realized more quickly and efficiently after parallel processing,which has a positive effect on engineering application.