基于TMS320C5509的数字内插波束形成器的实现研究  

Research on Implementation of Digital Interpolation Beamformer Based on TMS320C5509

作　　者：杨志兴[1] 尹雪飞[1] 陈克安[2] 邢超[2] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710072 [2]西北工业大学航海学院,陕西西安710072

出　　处：《电声技术》2009年第10期73-77,共5页Audio Engineering

摘　　要：针对数字波束形成中高精度定向需要较高采样频率的要求,研究了1种数字内插波束形成技术,并在TMS320C5509上予以实现。结合C55x系列DSP结构的特点,对比分析了C54x系列和C55x系列循环缓冲区实现的异同,给出了C55x上循环缓冲区实现的代码实例及优化说明。最后在软件仿真器上进行了仿真,证实了程序的正确性和数字内插技术的有效性。Considering the needs of higher sampling frequency for high performance, a method of digital interpolation beamforming is analyzed and accomplished in TMS320C5509 DSP. Based on the characters of C55x, the difference of circular addressing between C55x and C54x is analyzed. The concrete code example of circular addressing and optimization specification are presented. The validity of the digital interpolation beamforming method is verified by simulation in the simulator of code composer Studio.

关 键 词：数字内插 波束形成 TMS320C5509 循环寻址 

分 类 号：TN911[电子电信—通信与信息系统]