arctan

基本解釋

Based on noncoherent DLL and arctan carrier PLL, the curves of tracking errors in general forms are given after a series of computing and simulation.
基於非相關(guān)早減遲延時(shí)鎖定環(huán)和反正切載波跟蹤環(huán),得出了由一般形式的誤差解析表達(dá)式導(dǎo)出的碼相和載波相位跟蹤誤差曲線(xiàn)。
This is alpha version, availiable under GPL licence.Addtion, Division, Multiplication, sqrt, Ln, Exp, sin, cos, tan, arcsin, arccos, arctan and factorial are implemented.
這有個(gè)高精度計(jì)算的函數(shù)運(yùn)算輔助單元，希望對(duì)你有幫助： Calculations with float numbers of unlimited precision.
Because the CORDIC algorithm can change the arctan function and round of angle to addition and shift operation, the novel model presented in the paper can complete frequency offset estimation and correction in digital field in the same time.
由於CORDIC算法能把複襍的反正切函數(shù)求解和角度鏇轉(zhuǎn)操作轉(zhuǎn)化爲(wèi)簡(jiǎn)單的移位和加法操作,文中所給出的同步模型可在數(shù)字域同時(shí)完成頻率偏移估計(jì)和頻率偏移校正。
arctan function
反正切函數(shù)

arctangent: the function the value of which for a given argument is the angle in radians (between /2 and /2) the tangent of which is that argument: the inverse of the tangent function