摘要： 快速傅立叶变换、兼容GPS/Galileo系统接收机中上下变频以及DDS中都需要变换因子，这些变换因子要求计算 形式角度的三角函数值，提出了一种调整的CORDIC算法，通过仿真该算法在计算这些特殊角度的三角函数值时，不仅节省系统存储空间资源，而且计算效率可以提高50%，是一种行之有效的方法。
关键词:
CORDIC,
旋转因子,
三角函数,
兼容GPS/Galileo接收机
Abstract: A modified CORDIC algorithm is presented, based on computing the trigonometric function of specific angle, which can be expressed as and used in FFT, upconvert/downconvert and DDS. Simulation results show that the storage unit can be saved and computation efficiency can be increased by about 50% compared with the traditional CORDIC algorithm. Therefore the algorithm is feasible and available.
Key words:
CORDIC,
Transfer factor,
Trigonometric function,
Combined GPS/Galileo receiver
何秋生;郝建军;李 辉;程亚奇. 一种特殊角三角函数值的快速算法[J]. 计算机工程, 2007, 33(03): 271-272.
HE Qiusheng; HAO Jianjun; LI Hui; CHENG Yaqi. Fast Algorithm of Trigonometric Function Computation of Specific Angle[J]. Computer Engineering, 2007, 33(03): 271-272.