摘要：本文在传统CORDIC算法的基础之上，通过增加迭代次数，对参数进行了优化筛选，

提高了运算精度，使设计出的软核能够在精度要求较高的场合中运行，如实时语音、图

像信号处理、滤波技术等。输出数据经过IEEE-754标准化处理，能够直接兼容大多数处

理器，扩展了其应用范围。最终在Altera公司NiosⅡ处理器中通过增加自定义指令的方

式完成了硬件实现。

关键字：CORDIC ,自定义指令, IEEE-754标准化处理。-Abstract: In this paper, based on the traditional CORDIC algorithm, by increasing the number of iterations, selection of parameters were optimized to improve the computing precision, the design of the soft-core to the occasion in the high precision in the running, such as real-time voice , image signal processing, filtering technology. IEEE-754 output data after standardization, can be directly compatible with most processors, expanded its scope of application. Altera, Nios Ⅱ ultimately by the processor the way to add custom instructions to complete the hardware. Keywords: CORDIC, custom instruction, IEEE-754 standard treatment.