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移动平均通道
移动平均通道

包络线是一种技术指标,通常由价格水平范围的上下两条移动平均线形成。上下边界与价格水平之间的距离有市场波动性决定:当时的波动性越高,距离越大。因此,包络线用于刻画价格大多数时间在其范围内波动的通道。

包络线

当价格达到上边界,发出卖出的信号,当达到下边界,发出买入的信号。

包络线根据下列规则判断价格的下一步运动:任何波动之后价格总要回到主要趋势。很多交易者相信该指标是著名的布林带的一个变形。然而这两种指标本质上是不同的。价格偏离其通道越远,交易者获利越多,并且越接近价格返回之前水平的时刻。

计算

上边界 = SMA(CLOSE, N)*[1+K/1000]

下边界 = SMA(CLOSE, N)*[1-K/1000]

其中:

SMA - 简单移动平均;

N - 平均周期;

K/1000 - 偏离平均值(以基点为单位)。

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