General Information
STANAG-4285 is a NATO standard for digital data communication.
Usage:
§ Transfer of digital information over HF.
Mode Details
|
Parameter |
Value | ||||||||
|
Symbol rate (Bd) |
2400 | ||||||||
|
Bandwidth (Hz) |
3000 | ||||||||
|
Short interleaver (s) |
0.852 s | ||||||||
|
Long interleaver (s) |
10.240 | ||||||||
|
Data rate (bit/s) |
75 |
150 |
300 |
600 |
1200 |
2400 |
1200 |
2400 |
3600 |
|
Modulation |
BPSK |
BPSK |
BPSK |
BPSK |
QPSK |
8PSK |
BPSK |
QPSK |
8PSK |
|
Error correction |
CR 1/16 |
CR 1/8 |
CR 1/4 |
CR 1/2 |
CR 2/3 |
none |
none |
none |
none |
|
Interleaving |
Short/ |
Short/ |
Short/ |
Short/ |
Short/ |
none |
none |
none |
none |
Table 17: STANAG-4285 Stanadard
|
|
Item |
Value |
|
Demodulator Settings |
Demodulator |
PSK data aided |
|
|
Symbol rate (Bd) |
2400 |
|
|
SR tolerance |
12 |
|
|
Modulation order |
8 |
|
|
Version |
A |
|
|
Min. burst length (s) |
0.100 |
|
|
Max. burst length (s) |
1.000 |
|
|
Min. pause length (s) |
0.100 |
|
Features |
Demodulation |
yes |
|
|
Recognition |
yes |
|
|
Decoding |
yes |
|
|
Automatic Polarity Adjustment |
no |
|
|
Combination with other modems (modem list) |
yes |
|
|
Channel 2: STANAG-5066 text output |
yes |
|
|
Channel 16: Binary hex output |
yes |
|
Tuning |
The center frequency is 1800 Hz. | |
Table 18: STANAG-4285
Figure 18: STANAG-4285 Spectrogram
Modem Version History
|
Release |
Date |
History |
|
2.0.0 |
2013-01-10 |
Modem added |
|
2.2.0 |
2014-03-19 |
Data format 7N2 added |
|
|
|
Long interleaving corrected |