arctan，英'ɑ:kt?n ?；美'ɑ:kt?n
arctan，全稱為Arctangent：指反正切函數，反正切函數是反三角函數的壹種，即正切函數的反函數。壹般大學高等數學中有涉及。
arctan，英'ɑ:kt?n ?；美'ɑ:kt?n
翻譯：arctan，全稱為Arctangent，指反正切函數，反正切函數是反三角函數的壹種，即正切函數的反函數。壹般大學高等數學中有涉及。
例句：
A study of Arctan and PLL digital RDC algorithm is carried on. ?
對反正切法和鎖相環法這兩種傳統的數字RDC算法進行了研究。
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算法能把復雜的反正切函數求解和角度旋轉操作轉化為簡單的移位和加法操作，文中所給出的同步模型可在數字域同時完成頻率偏移估計和頻率偏移校正。
LFM can be demodulated by the same arithmetic as for FM, and the demodulated signal takes on the shape of saw-tooth-wave and the period of LFM can be estimated while modulation slope can't because of arctan operation. ?
LFM信號可以用實現FM的方法來進行解調，解調信號呈鋸齒狀，可以從中獲得調制信號周期，但是因算法中存在反正切運算，致使無法從中獲得LFM的調制斜率。?