SGDV-R70A15A
140CPU53414B现货在线热卖
140CPU53414B施耐德现货
140CPU53414B给力高品质
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1.2 VOR可变相位信号
可变相位信号(Variable Phase Signal)只包含单纯的射频载波,频率范围108MHz~117.95MHz。两对正交的边带天线分别辐射正弦调制边带波和余弦调制边带波,场强均按30Hz的规律变化,这样在空间就生成了一个30Hz正弦规律改变的调幅波,表达式为:
(2)
式中是当前VOR径向方位角。
1.3 合成信号
空间接收到的合成信号(Composite Signal)包括基准相位信号和可变相位信号的叠加,如图1所示,表达式为:
(3)
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