高精度正余弦函数的FPGA实现

在研究CORDIC算法的数学基础上,采用流水线的硬件结构实现了该算法,并在Ahera公司的FPGA芯片上进行了验证,使正余弦函数的计算达到了实时性、高精度的要求.该设计模块完全支持超过360°的大角度数据输入,多数数据精度达到了10-9,时钟频率可以达到233.2 MHz.测试结果表明,该系统具有较高的精确度和稳定性.

The Implementation of High Precision Sine and Cosine Functions on FPGA

Based on the study of the CORDIC algorithm, this paper uses pipeline processing to implement the CORDIC in hardware, which meets the requirement of real-time processing and high precision. Software simulation and hardware experiment have been done for this module on Altera FPGA. The wide angle even above 360° can also be supported by the hardware module. The accuracy of most of the data is up to 10^-9, and the clock frequency reaches 233.2 MHz. The results show that the module has high accuracy and good stability.