arc tangent

Based on differential evolution ( DE) algorithm, a method of fast implementation of the arc tangent function with high accuracy using assembly in fixed-point DSP is proposed. The validity and real-time behavior of this method is tested in a large scale.

基于差分进化算法，提出一种在定点DSP汇编层快速实现高精度反正切函数的方法，并对该方法在确定精度范围内的正确性和实时性进行了测试。

Computes the arc tangent ( in radians ) of the specified argument.

计算指定参数的反正切 ( 按弧度 ).

Implementation of arc tangent function using assembly in fixed-point DSP based on differential evolution algorithm

实现定点DSP汇编层反正切函数的差分进化算法

The locus of space tangent point and the arc segment of deck at side are obtained based on the above conditions.

在此基础上，求出首圆弧空间切点线和甲板边线的修正段。

Compared with traditional methods, the approximating polynomial calculated by DE is of high accuracy and low order, and the real-time behavior of the arc tangent function designed by DE is much better than C library function.

与传统方法相比，差分进化算法求得的逼近多项式精度高、阶数小，设计出的反正切函数实时性远优于C库函数。

Arc-tangent and exponent function, which used in the magnetic heading system and altitude meter, are analysed.

在一定精度要求下, 以两种常用函数(飞机磁航向和气压高度)为例算出插值区间.

Various conversion manners are defined, including linearity, logarithm function, tangent function and arc tangent function.

定义了不同的强度-相位转换方式，例如线性方式、对数函数方式、正切函数方式、反正切函数方式等。

Thesis analyzes superposition average algorithm of tradition and pointed out the limitations of the algorithm, the problems about that the residual interference noise and the incubation period of disturbance, proposes a superposition averaging algorithm based on the arc tangent function of the IIR filter.

论文分析传统叠加平均算法并指出该算法的局限，对残留干扰噪声及潜伏期的扰动问题，提出一种基于反正切函数的IIR滤波器叠加平均算法。

The results show that the model has good fitting precision. It is more reasonable than traditional modified arc tangent function or hyperbolic function model for the saturation characteristic of transformer.

结果表明，与已有的修正反正切函数或双曲函数模型相比，该模型不仅具有较高的精度，而且对变压器饱和特性的模拟也更为合理。

Expression to compute the arc tangent of ( float ).

要计算反正切的表达式 ( 浮点小数型 ).

On Relation between Length of Tangent and That of Arc

切线段与弧的长度关系

CORDIC algorithm with the two parameters arc tangent.

用CORDIC算法实现的2参数反正切.