Wavecom W-SPECTRA (Automatic Monitoring System) V1.1.0 Bedienungsanleitung PDF herunterladen (Seite 213)

WAVECOM Monitoring System W-SPECTRA, W-SPEED Manual V1.1.0 Classifier – the Brain of W-SPECTRA



203

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 subcarri-

ers 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.

Caveats

Even though the classifier has been carefully designed, the extreme complexity of classification requires

the user to be aware of a few caveats. Common sense and visual inspection, as well as prior monitoring

experience, are helpful when dealing with these issues.

Half-Duplex Signals

The classifier will only classify half-duplex or burst signals with difficulty. This is due to the nature of the

signal, which is only present for a relatively small fraction of the total sampling time.

Multi-channel Systems

The current version of the classifier will only classify a 12-channel PSK CIS-12 signal as a single, aggre-

gate signal – for all other multi-channel systems the classifier will classify each sub-channel as an individ-

ual signal.

MFSK

The current version of the classifier may indicate an incorrect number of tones for MFSK signals.

1 2 ... 208 209 210 211 212 213 214 215 216 217 218 ... 291 292

Keine Kommentare

Wavecom W-SPECTRA (Automatic Monitoring System) V1.1.0 Bedienungsanleitung Seite 213