【摘要】 推导了计算机定点运算中计算坐标转换的统一的CODIC算法公式。给出了定点计算三角函数、开平方等初等函数的误差分析,并对该算法进行了改进,使计算精度达到火控总体的要求。在同等精度要求下,改进后的CODIC算法比级数展开法节省机器时间大约50%以上。此改进算法已应用于简易火控系统,取得了好的效果。更多还原

【Abstract】 The unified formulas are deduced,which are used to calculate coordi- nate conversion in fixed point computing.Also the error analysis of eleme- ntary functions,such as trigonometric and square root functions for fixed point computing,is given.The algorithm has been improved,so that the computing accuracy is satisfied with the overall requirements of the fire control system.The computing time is saved by more than 50% approxima- tely,compare CODIC algorithm with series development algorithm.The improved method has been applied to a simple fire control system.The result receives acceptance.更多还原