计算机技术与发展Issue(11)：103-107,5.DOI:10.3969/j.issn.1673-629X.2013.11.026
基于CORDIC改进算法的反正切函数在FPGA中的实现
Realization of Arc-tangent Function Based on Improved CORDIC Algorithm in FPGA
摘要
Abstract
In the light of a large number of trigonometric function calculations in the distributed navigation systems based on FPGA,while with the traditional looking-up-table or differential methods,the calculation accuracy and speed can not be got at the same time,taking up more resources,present the improved measures and pipeline structure of arc-tangent function based on CORDIC algorithm,use VHDL to program,and by using the Quartus II 9. 0 the function simulation can be got,finally on the Altera FPGA chip the algorithm is tested. The results show that,truncation error generated by the accumulator are reduced significantly,and the algorithm accuracy is improved,the computing speed is very fast.关键词
CORDIC算法/反正切函数/VHDL/FPGA芯片/截尾误差Key words
CORDIC algorithm/arc-tangent function/VHDL/FPGA chip/truncation error分类
信息技术与安全科学引用本文复制引用
刘小会,许蕾,刘海颖,王惠南..基于CORDIC改进算法的反正切函数在FPGA中的实现[J].计算机技术与发展,2013,(11):103-107,5.基金项目
江苏省自然科学基金(KB2011729) （KB2011729）
