Wavecom W-SPECTRA (Automatic Monitoring System) V1.1.0 Manual de usuario descargar pdf (Pagina 216)

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

CW-Morse

Ts = 1.6 s: 6 to 60 Bd

Ts = 3.2 s: 3 to 60 Bd

Voice

AM, FM, USB, LSB

Operation

FFT display of classified signals

Continuous and single-pass mode

Classifier Code Check with look-up table

Wideband classifier (W-Classifier-WB) technical data.

FSK

m = 0.8: 100 – 2400 Bd

m = 0.8: 50 Bd

m >= 2: 100 – 2400 Bd

m >= 2: 50 Bd

12 dB (Eb/N0)

15 dB (Eb/N0)

14 dB (Eb/N0)

16 dB (Eb/N0)

PSK 2/4 Variant A/B

100 – 2400 Bd

14 dB (Eb/N0)

PSK 8/16 Variant A/B

100 – 2400 Bd

16 dB (Eb/N0)

CW-Morse

8 – 50 Bd

18 dB (Eb/N0)

W-Classifier-WB quality of modulation classification.

FSK 100 Bd – 60 kBd

baudrate

center frequency

0.3%

2% of baudrate

PSK 100 Bd – 60 kBd

baudrate

center frequency

0.2%

0.15% of baudrate

CW-Morse 6 – 50 Bd

baudrate

W-Classifier-WB accuracy of measured parameters.

Classifier Code Check HF/VHF/UHF (CCC)

The Classifier Code Check is a versatile analysis tool for the classification of unknown signals and the de-

termination of the protocol (mode) in use. The CCC combines a classifier with a table-based mode check

and an advanced code check.

There are two kinds of CCCs in W-SPECTRA. The HF CCC will attempt to process all signals within a band-

width of up to 4.8 kHz depending on settings and will primarily address the requirements for the analysis

of signals below 30 MHz. The VHF/UHF CCC will attempt to process all signals within a bandwidth of up to

96 kHz depending on settings and will primarily address the requirements for the analysis of signals from

30 MHz to 3 GHz. Both CCC will of course work with signals in other frequency ranges if they fall within

the bandwidth, and fulfil the other criteria, used by the CCC processes.

How the Classifier Code Check Works

The CCC processes input signals in up to four successive steps as shown in the block diagram below,

which also shows the possible signal paths. The user can select how many steps should be involved in the

analysis of the signal(s) under investigation.

1 2 ... 211 212 213 214 215 216 217 218 219 220 221 ... 291 292

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Wavecom W-SPECTRA (Automatic Monitoring System) V1.1.0 Manual de usuario Pagina 216

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