- Is there a reason that my helicorder reading slants/appears wiggly?
- There was a gigantic spike on our weak motion sensor. Thoughts?
Hi Danielle, the accelerometer channels sometimes show this type of fluctuation, it is normal behavior for these types of MEMS sensors. These fluctuations can be easily removed by implementing a highpass filter above about 0.1 Hz.
I’m not sure what the spike is that you showed, but it looks like it’s a “real” piece of data, not an artifact of a sensor-related spike, which are typically lower frequency than that.