OXTS RT1003, Руководство пользователя

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RT1003 Manual
Revision: 1
90628
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outputs using a second order low-pass filter. The characteristics of the filter can be set and
viewed in the Acceleration filtering properties window (Figure 34).
Designing the right filter is always a compromise between the noise reduction and the filter
delay. To help choose the filter, the software will compute the maximum delay over the 0 to
5 Hz interval and the Noise Reduction Factor over the full bandwidth. The Noise Reduction
Factor is the ratio of the filtered noise compared to the unfiltered noise assuming the vibration
is white (i.e. same amplitude across the frequency spectrum). A graph showing the delay with
respect to frequency can also be plotted. The delay is the additional delay of the filter and not
the total delay of the acceleration output. The RT1003 has other delays, like calculation delay,
too.
Figure 34. NAVconfig acceleration filter properties window