线性加速度传感器通常有一个偏移量，你需要把它去掉。
Thelinear acceleration sensor always has an offset, which you need to remove.
推导了利用两点线性加速度传感器测量能量流的互谱表达式。
The cross spectrum expression of energy flow is deduced when two linear accelerometers are arrayed to measure energy flow.
接下来你可以去除掉这些偏移量，最后就可以得到真正的线性加速度了。
You can then subtract that offset from the acceleration sensor's direct readings to get the actual linear acceleration.
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