基于FPGA的反正弦函数的实现  

Implementation of Arcsine Function Based on FPGA

作　　者：谢珊英[1,2] 齐伟民[1] 蔡晓宁[1,2] 

机构地区：[1]中国科学院电子学研究所,北京100190 [2]中国科学院研究生院,北京100190

出　　处：《电子器件》2010年第3期344-347,共4页Chinese Journal of Electron Devices

摘　　要：快速精确的反正弦函数运算在现代工程中应用广泛。为了提高反正弦函数的精度和计算能力,研究了基于CORDIC算法的反正弦函数运算器的FPGA实现,并通过改进算法减小了误差,使误差精度达到10-4数量级。并在Xilinx的XC5VSX50T芯片上验证,结果表明该运算器的数据处理速度快,精度较高,适用于高速大数据量的数据信号处理领域。Fast and accurate computation of the arcsine function in a modern engineering has been used widely.In order to improve the precision and calculating capacity of the arcsine＇s algorithm,this thesis has studied the FPGA actualization of the arcsine arithmetic unit based on the CORDIC algorithm,and has decreased the difference by improving the algorithm,which has made the difference level reach the 10-4 order of magnitude.Through the verification on the Xilinx XC5VSX50T chip,the result has indicated that this arithmetic unit is fast in the procession of data and is of higher precision,which is applicable to signal processing field of large quantities of speedy data.

关 键 词：CORDIC FPGA 反正弦函数 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]