Classifier Parameters

There are following parameters in a classifier:

 

Modulation

Check any number of modulation types or voice using the appropriate check boxes to narrow down the range of recognized signals.

Continuous Mode

If continuous classification is desired check this box. Continuous mode can be halted and restarted pressing the Start/Stop Classifier button.

If the Continuous Mode check box is left unchecked, each classification must be started manually by pressing the Start/Stop Classifier button. The classifier allows only one classification attempt at a time. During classification attempts the Start/Stop Classifier button is grayed out.

Refresh List

 

If the Refresh List check box is checked, the list of results will be cleared after each classification attempt. This feature is only available when continuous mode is selected.

Cycle Mode

This parameter sets the interval between classification attempts if no signals were classified. Enter a restart cycle length ranging from 4 s to 3600 s. Samples are available from two sources:

Samples taken before the classifier was started (select Previous Samples).

Samples taken after the classifier was started (select New Samples).

Sample Time

 

Choose a sample time of 1.6 or 3.2 s. The probability of correct classification of low symbol rate signals increases when the higher sample time is selected.

OFDM Mode

 

If Full Analysis is selected the modulation format of the OFDM subcarriers is also analyzed. If Partial Analysis is selected, the modulation format of the subcarriers is not analyzed.

30 Bd CW-Morse Protection

Checking this box will introduce a feature to prevent the classifier from confusing CW and FSK signals at the edges of the sampled input bandwidth.

 

The parameters can be set in the lower right corner of the W-SPECTRA GUI.

 

Set proper value for the classifier parameters.