How should we handle these frequency dependencies?
There are three recommended techniques for handling frequency dependency. First, you can use a single frequency. Regulatory requirements prevent continuous transmission at a single frequency; compliance will limit the sample rate. Therefore, the use of this technique in real applications is limited. Secondly, you can average the Sensor Code readings over the entire frequency band. The frequency range must be sampled adequately and evenly in order to avoid biasing results. This technique can only be used when it is possible to collect enough data. Finally, you can use regression analysis to fit the Sensor Code readings to a line. You then take the value of the line at some fixed frequency. This technique provides a faster, more accurate measurement; however, it is more complex to implement.
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