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b. Frequency Gap
Defines the minimum frequency gap between two peaks. Given two peaks
whose gap is smaller than this setting, then only the peak appears first or the
peak with large peak value would be logged.
This setting is meant to prevent logging a wideband signal with multiple
peaks as multiple signal. So as to improve informational accuracy.
We recommend setting this parameter slightly small than the channel gap
of the frequency band to be tested. Specific parameter should be adjusted
flexibly accroding to the scenario. A too small gap would result in repetition in
logging while a too big gap would miss signals.
Altering this parameter while logging would delete those logged results
that fail to fit the new criteria.
c. Time Occupancy Filtering
Time occupancy refers to the time ratio a signal occupies a frequency. For
example, the time occupancy of a constantly transmitting control signal is
100%, whereas the time occupancy of a frequency that is just used to call the
roll on a daily basis is less than 1%.
In many cases, neither the constantly appearing signals nor the randomly
appearing signals is of interest. This is when time occupancy filter becomes
useful.
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