Specification

go2DECODE Specification


General

Classifier/Recognition:

  • The minimum signal length for the wideband modulation classifier is 100 ms.
  • Using the decoder (Recognition & Decoding) , the software is able to detect and process signals with a signal length of at least 1 ms.

Decoders and Demodulators:

  • MIL and PMR decoders may need an End-User-Certificate (depends on the country of the user)
  • One decoder = one line (to shorten the list). For the full list, download the actual decoderlist
  • Slow multi tone modems are recommended to operate with fixed nominal frequency
  • Obsolete decoders, end of live: See more information

Receivers:

  • The list can be extended on customer requests.
  • It is possible to connect multiple wide band an narrow band receivers to the software.

Versions

go2DECODE Light Standard Profes.
DANA + + +
PMO + + +
SOMO - - +
Spectrogram + + +
Max. signal bandwidth 500 kHz (typ) + + +
Max. input bandwidth 2 MHz
(10 MHz limited functionality)
+ + +
Analysis Spectrum - + +
Analysis Constellation Display - + +
Analysis Time Domain - + +
Analysis Eye Pattern - + +
Analysis Display - + +
Analysis Hell Display - + +
Analysis Bit Display - + +
Analysis Manuals Analysis - + +
New Decoder List - + +
Load Decoder List + + +
New Decoder - + +
Change Demodulkator Parameters + + +
Processing of Decoder Lists + + +
Signal-Input TCP/IP + + +
Signal-Input wav Files + + +
Signal-Input Sound-Card + + +
Analysis Demodulators - + +
DDL Editor - + +
DDL Compiler - + +
DDL Debugger - - +
Signal-Replay wav Files + + +
Automatic Processing + + +

System

Parameter Specification
Documentation Printed user manual
PDF online help
GUI Flexible and customizable user interface
Input spectrogram with live audio
Manual and automatic demodulator and decoder control
Various specialized analysis displays for manual signal analysis
Complete collection of cursors for signal analysis
Editor for demodulator and decoder settings
Decoder editor, compiler for DDL and debugger (Professional version)
Input Digital IF (complex baseband I/Q)
Sound card
Digital AF (WAV 8, 16, 32 Bit)
Receiver streaming and control
Others on request
ISO 9001:2015 Company is certified (not only hardware)
License USB-Dongle, SD-Card etc. (CodeMeter/WibuKey)
Bound to hardware
License sharing
Localisation English
German
Others on request
OS Windows 7 / 10 64 bit English or German
Linux (CentOS/Redhat 6/7) 64 bit
PC hardware Min. Intel I5 2 Core, 2 MHz, 4 GB RAM
HDD: min. 10 GB recommended (depends on recordings)
Screen Resolution: min. 1280 x 1024 pixel (1920 x 1080 recommended)
Sound card for analog input
Fast Ethernet for digital IF input
Training Training for basic operation, 4 days
Training for DDL, 4 days
Input Audio DANA
Input TCP/IP Streaming Generic PROCITEC/PLATH format
VITA 49 (on request)
PXGF (on request)
Output Result Viewer
(PMO)
Display of:
- Decoder text output (STANAG, ALE, HFDL, etc.),
- Demodulated audio files (CW, TETRA etc.)
- Binary files
Output, Alphabets Modifickation of the decoder source code, configurable
(go2DECODE Standard or Professional required)
Output, Result files Deocoding results
TXT-File with decoded text
XML-File with decoded text and metadata
Signal recordings
Voice recordings
Bitstream *.rec files (bits and quality of each bit)
Bitstream *.txt files (bits)
Recording IF /AF
Start / Stop:
- manual by operator
- automatic by trigger

Trigger types:
- Configurable squelch level
- Signal detected
- Transmission method recognised
- Transmission method unknown
- Voice detected

File format: WAV
Voice detection, demodulation, recording Modulation types: AM, FM, USB, LSB, DSB
Detection: voice yes/no
Nominal frequency
Voice PitchDemodulation
Automatic audio demodulation and recording
Decoder Development
(go2DECODE Standard or Professional)
Modification of existing decoders
Programming of new decoders
Sonagram Viewer
(SoVi)
Standalone application for spectrum/sonagram display
Third party decoders Interface to the DDC channel output
Interface to the bitstream output
Streaming and control interface with DDL

Analysis

Analysis Items
Displays Spectrum
Spectrogram/Sonagram
Autocorrelation
Constellation
Eye pattern
Time domain (oscilloscope) with histogram
Analysis (magnitude, frequency and phase) with histogram
Hell
Bit
Squaring Squaring: 0, 1, 2, 3
Windowing Rectangle
Hanning
Hamming
Kaiser
Flattop
Blackman
Cursors Harmonic
Crosshair
2 cursor mode
Center frequency Adjustable
Operating modes Online
Offline

DDL, Decoder Development Language

Decoder Development Item
Deliverd with go2DECODE-Standard
go2DECODE-Professional (with Debugger)
Basic functions Modification of standard decoders
Definition of new decoders
Integration of existing decoders
Function library Pre-processing
Symbol conversions
Descrambling procedures
Channel selections
Pattern search
Burst detection
Forward/backward time jumps
Branches and sub-routines (special functions on request)
Deinterleaving
Error Correction, detection: CRC, Hamming, Viterbi, BCH, Reed-Solomon
Elementary arithmetic and bit manipulations functions
Table handling
Output formatting, alphabets, channels
Control of demodulation and decoding
Setting of demodulator parameters
Voice codec selection
Soft decision demodulation
Decoder Editor Automatic command completion
Content sensitive help
Syntax highlighting
Decoder Compiler Generation of binary decoder files
Detailed code check and error messages
Debugger
(go2DECODE-P)
Breakpoints
Single-step mode
Display of variable contents in various formats and displays
Editing of variable contents
Display of all input data packages
Display of internal data buffer and current read position

Advanced analysis of recognition, demodulation and decoding:
- Breakpoints in several decoders of one modem list
- Comparison of the decoder behaviour in search phase and decoding phase
- Monitoring the current demodulator state

DANA

Parameter Specification
GUI Sound card configuration
Playlist (files)
Loop mode
DC remove function
Audio filtering
Mirroring
FM demodulation
Time source switchable between File or System time
Sample rate converter
Center frequency tuning
Command-line mode
Input Max. sampling rate: 10 MHz (limited functionality for > 2MHz)
Digital IF files (complex baseband I/Q 32 Bit)
Playback of standard wav files.
Digital AF files (WAV 8, 16, 32 Bit)
IQ (complex) or audio (real) real files
Playback of Perseus and WiNRADiO WAV recordings with correct frequency display
Sound card input for analog signals, Virtual Audio cables (VAC), webradios
Output Stream, digital IF generic PROCITEC/PLATH format
TCP/IP streaming from DANA to go2DECODE/ go2MONITOR (remote computers)

SOMO, Signal Generator (go2DECODE-P)

Signal Generator Item
Modulations ASKn
PSKn (single and multi channel)
QAMn (single and multi channel)
ASKnPSKm (single and multi channel)
NCPFSKn
FSKn (single and multi channel)
MSK (single and multi channel)
GMSK (single and multi channel)
F7B
TFM3
TFM5
Morse
Sine
Rectangle
Saw tooth
Triangle
Input from .wav files
Function Generation of single and multi channel, continuous and burst
Primary modulation AM, FM USB, LSB
Variable modulation parameters:
- Attenuation
- Center frequency
- Baud rate
- Pulse shapes: RC pulse, RC/RRC spectrum, Gauss pulse
- Burst parameters
Coding Binary
Baudot
ASCII
HC ARQ
ITA2
Differential/absolute coding
Convolutional encoding / Viterbi
CCITT standards V.17 ... V.33
Variable bit stream, bit order, parity
Various scrambling algorithms
Channel simulation AWGN (additive white Gaussian noise)
Multipath propagation: Watterson (ITU) and enhanced ITS model
Output Sound card
wav files
Streams

Demodulators

Demodulator Name Remarks
AM / A3E  
Analogue Selcall  
ASK 2/4  
ASK2PSK2 (ASK4)  
ASK2PSK8  
ASK4PSK8  
Chirp  
CLOVER 2000  
CLOVER 2500  
CLOVER II  
Coquelet  
DPSK 2, 4, 8, 16 A/B  
F1A  
F6/F7B  
FM / F3E  
FSK 2 matched filter  
FSK 2, 3 auto-shift  
FSK 2, 3, 4 discr.  
J3E (USB, LSB)  
LINK-11  
MDPSK 2, 4, 8, 16 A/B  
MFSK  
MFSK2  
Morse, CW  
MPSK 2, 4, 8, 16 A/B  
MSK / GMSK  
MT63  
MultiModem  
Multitone (FSKn)  
OFDM  
OQPSK  
PACTOR II, III, 4  
PSK 2, 4, 8, 16 A/B  
PSK data aided Fast adaptive equalizer, sof decision
QAM 16  
QAMn (16, 32, 36, 64, 128, 144, 256)  
TFM3  
THROB/THROBX  

Decoders (Protocols)

No Decoder, Release 17.2 Alias, Remarks Src Type
1 ACARS VHF SITA, ARINC 597 X VUHF
2 AIS   X VUHF
3 Alcatel 801H Alcatel 801H, detection only, X HF
4 ALE 2G MIL-188-141A, MIL-188-141B, ALE-400 X HF
5 ALE 3G MIL-188-141B App. C, STANAG 4538 - MIL
6 ALIS MERLIN, RS-ARQ, GM856C1, ALIS Slow X HF
7 ALIS 2 detection only X HF
8 APCO-25 P25 - PMR
9 ARQ6-90 CCIR 518 Variant X HF
10 ARQ6-98 CCIR 518 Variant X HF
11 ARQ-E 4/8 cycle ARQ-1000 duplex X HF
12 ARQ-E3 CCIR 519 Variant, TDM 342 1 Channel X HF
13 ARQ-M2-242 ARQ-28, CCIR 242, CCIR 342, TDM 242 X HF
14 ARQ-M2-342 ARQ-58, TDM 342 X HF
15 ARQ-M4-242 ARQ-28, CCIR 242, CCIR 342-2, TDM 242 X HF
16 ARQ-M4-342 ARQ-58, TDM 342 X HF
17 ARQ-N ARQ-1000 duplex X HF
18 ASCII 7Bit ITA5, RTTY7 X HF
19 ASCII 8Bit   X HF
20 ATIS   X VUHF
21 Autocab   X VUHF
22 AUTOSPEC SPREAD 11, SPREAD 21 X HF
23 Baudot async 1.5 stop bit   X HF
24 Baudot sync   X HF
25 Baudot sync 2 stop bit   X HF
26 Baudot universal Arabic, Cyrillic, Hebrew Alphabets X HF
27 BIIS   X VUHF
28 BULG-ASCII IRA-ARQ X HF
29 CHN 4+4   - MIL
30 CHU   X HF
31 CIS 405 3915 CIS 40.5, FROST1 X HF
32 CIS FSK 200/1000   X HF
33 CIS FSK 200/500   X HF
34 CIS-11 TORG 10/11 X HF
35 CIS-12 CIS AT3104, CIS-20, FIRE, MS5 X HF
36 CIS-14 AMOR, AMO 96, TORG 14 X HF
37 CIS-36 CIS 10 11 11, CROWD-36 X HF
38 CIS-36-50 BEE, T-600 X HF
39 CIS-81-81 CIS 81, CIS 81-29, Frost X HF
40 Clansman FSK300   X HF
41 Clover 2000   - HF
42 Clover 2000 Broadcast   - HF
43 Clover 2500   - HF
44 Clover 2500 Broadcast   - HF
45 Clover II   - HF
46 CODAN 3012 16 Channel PSK additional raw hex output, descrambled - HF
47 CODAN 3012 Chirp CODAN 9001 Chirp - HF
48 CODAN 3212 1 Channel PSK only 600 and 1200bps fully supported - HF
49 CODAN 3212 16 Channel PSK Includes CODAN 3012 - HF
50 CODAN Selcal CODAN 8580, CCIR 493-4 - HF
51 Contestia 8/16/32   X HF
52 Coquelet-13 Coquelet-Mk1 X HF
53 Coquelet-8 Coquelet-Mk2 X HF
54 Coquelet-80 Coquelet-8 FEC X HF
55 CV-786   - MIL
56 DGPS M823 X HF
57 DMR MotoTRBO, for burst emissions - PMR
58 DMR Continuous MotoTRBO, for continuous emissions - PMR
59 dPMR   - PMR
60 DPRK PSK detection only X HF
61 DSC-HF GMDSS X HF
62 DSC-VHF GMDSS-VHF X VUHF
63 D-STAR     PMR
64 DUP-ARQ ARTRAC X HF
65 ERMES   X VUHF
66 F7B Morse   X HF
67 F7B Morse/Baudot 2 channel ITA-2 RTTY, Baudot F7B, BF6 Baudot, ITA-2 Twin X HF
68 FEC-A FEC 100, FEC 101 X HF
69 Flex   X VUHF
70 FMS-BOS   X VUHF
71 FSK 400/500 detection only X HF
72 Globe Wireless FSK Globe Wireless Pactor, GW DATAPLEX X HF
73 Globe Wireless OFDM detection only - HF
74 Globe Wireless PSK GW DATAPLEX X HF
75 Golay Pager Golay/GSC X VUHF
76 G-TOR Golay X HF
77 HC-ARQ Haegelin-Cryptos X MIL
78 HFDL ACARS HF, ARINC 635-2 HF Datalink, ARINC 753 X HF
79 HNG-FEC   X HF
80 INMARSAT AERO-C 8.4 / 10.5 / 21.0 kbs, no audio output - SHF
81 INMARSAT AERO-P 0.6 / 1.2 / 2.4 / 4.8 / 10.5 kbs - SHF
82 INMARSAT AERO-R 0.6 / 1.2 / 2.4 / 10.5 kbs - SHF
83 INMARSAT AERO-T 0.6 / 1.2 / 2.4 / 10.5 kbs - SHF
84 INMARSAT-C TDMA   - SHF
85 LINK-11 CLEW STANAG 5511, TADIL A, TADIL B X MIL
86 LINK-11 SLEW STANAG 5511 SLEW - MIL
87 MD-674   - HF
88 MEROD 150 Bd RACAL-ARQ, RAC-ARQ X HF
89 MEROD 267Bd   X HF
90 MFSK-16   X HF
91 MFSK-8   X HF
92 MIL-188-110 16 Tone only raw output - MIL
93 MIL-188-110 39 Tone   - MIL
94 MIL-M-55529A MD-522 - MIL
95 Mobitex 1200 Mobitex 80 X VUHF
96 Mobitex 8000 Mobitex 400 X VUHF
97 Morse CW-Morse X HF
98 MOTOROLA SMARTNET APCO-16
MTR-EDACS (Channeld decoding)
- PMR
99 MPT1327 1200Bd MSK   X PMR
100 MT63   x HF
101 NMT450   X VUHF
102 NUM 13 SP 14 X HF
103 NXDN 2400/4800Bd IDAS, NEXEDGE - PMR
104 Olivia 8-16-32 X HF
105 Packet AX.25 X HF
106 Packet 600/1200   X VUHF
107 Packet 2400/4800/9600   X VUHF
108 PACTOR I incl. decoding of Robust Connect bursts X HF
109 PACTOR I FEC   X HF
110 PACTOR I/II/III Includes all PACTOR modes I/II/III - HF
111 PACTOR II   - HF
112 PACTOR II FEC   - HF
113 PACTOR III   - HF
114 PACTOR-4 post-processing (decompression) of airmail/sailmail emissions, if possible - HF
115 Panther-H Sync detection synchronisation bursts only   MIL
116 Piccolo MK12 Piccolo 12 X HF
117 Piccolo MK6 Piccolo 6 X HF
118 POCSAG 512/1200/2400 CityRuf X VUHF
119 POL-ARQ CCIR 518 Variant X HF
120 PSK10 BPSK-10 X HF
121 PSK125/250 BPSK125/250 variant of PSK31 with higher baud rate X HF
122 PSK31 BPSK31 X HF
123 PSK31-FEC PSK31F X HF
124 PSK63 BPSK63, variant of PSK31 with higher baud rate X HF
125 PSK63/125/220-FEC variant of PSK31 with FEC X HF
126 PSK-AM 10/31/50   X HF
127 QPSK31/63/125/250/500   X HF
128 RUM-FEC ROU-FEC, Saud-FEC X HF
129 SELCAL CCIR-1 SELCAL PCCIR, only for nominal frequency mode X VUHF
130 SELCAL CCIR-2 SELCAL CCIR-7, only for nominal frequency mode X VUHF
131 SELCAL CCITT only for nominal frequency mode X VUHF
132 SELCAL DTMF sub for baseband demodulation X VUHF
133 SELCAL EEA MPT1316, only for nominal frequency mode X VUHF
134 SELCAL EIA only for nominal frequency mode X VUHF
135 SELCAL EURO only for nominal frequency mode X VUHF
136 SELCAL EURO5 SELCAL EURO, only for nominal frequency mode X VUHF
137 SELCAL MODAT only for nominal frequency mode X VUHF
138 SELCAL NATEL only for nominal frequency mode X VUHF
139 SELCAL VDEW only for nominal frequency mode X VUHF
140 SELCAL ZVEI SELCAL DZVEI, PDZVEI, PZVEI,ZVEI-1, ZVEI-2, ZVEI-3 X VUHF
141 SI-ARQ ARQ-S X HF
142 SI-FEC FEC-S X HF
143 SITOR-A SITOR-ARQ, AMTOR, CCIR 476 A X HF
144 SITOR-B SITOR FEC, CCIR 476 B, TOR dirty X HF
145 SP14 NUM 13 X HF
146 SPREAD 51   X HF
147 STANAG 4197 audio codec not part of installation - MIL
148 STANAG 4285 Terminal Mode: ASCII8, Baudot, STANAG 5066, HEX - MIL
149 STANAG 4415 MIL-188-110A/B ser. (partly), 75bps - MIL
150 STANAG 4481 (FSK) with detection of KG-84 encryption - MIL
151 STANAG 4481 (PSK) contained in STANAG 4285 - MIL
152 STANAG 4529 Terminal Mode: ASCII8 & Baudot, HEX - MIL
153 STANAG 4539 MIL-188-110A/B ser. (partly), 150-4800 Bit/s - MIL
154 STANAG 4539 HDR MIL-188-110B App.C (partly), 3200 - 4800 Bit/s - MIL
155 STANAG 5065 (also Part of MIL188-110A/B) - MIL
156 SWED-ARQ ARQ-SWE, CCIR 518 Variant X HF
157 Tetra   - PMR
158 Tetra DMO   - PMR
159 Tetra Uplink   - PMR
160 Tetrapol Up/downlink, voice codec not included - VUHF
161 Thales 3000 Skymaster selcal detection only - MIL
162 THROB1/2/4   X HF
163 THROBX1/2/4   X HF
164 Turkish Navy FSK   X MIL
165 Twinplex   X HF
166 VDL 2   X VUHF
167 VDL 3   X VUHF
168 Visel FEC12, YUG-MIL X HF
169 Voice A3E Air Traffic AM X VUHF
170 Voice A3E/J3E   X HF
171 Voice F3E - SELCAL CTCSS MPT1306, FM X VUHF
172 Voice F3E - SELCAL DTMF SELCAL DTMF, FM X VUHF
173 Voice J3E - USB - SELCAL ICAO Annex-10 X HF
174 Voice J3E-LSB   X HF
175 X06-Mazielka   X HF
176 XPA MFSK-20 x HF
177 XPA2   X HF

Receivers

Brand Receiver max Bw MHz Panorama Scan Comments
Airspy Airspy 8     ExtIO (experimental)
CommsAudit CA7851       VITA 49
CommsAudit CA79XX       VITA 49, ask
ExtIO   Max. receiver bandwidth     Experimental support
GEW gRX-LAN 1     ExtIO
GEW PxGF       ask
IZT 3XXX 20 x x Up to 3 channels + spectrum
IZT 40XX 1     SignalSuite, 1 channel only
Microtelecom PERSEUS 0.8     Limited USB3 compatiblity
NARDA IDA2 0.32      
NARDA NRA-3000 0.32      
NARDA NRA-6000 0.32      
National Instruments ETTUS USRP       EXtIO
National Instruments N200       ExtIO
National Instruments Others       ask
NOXON RTL2832U 3.2     ExtIO
PLATH DBT 5400 + VDC       ask
PLATH SIR2110 20      
PLATH SIR2115        
PLATH SIR5110 Full HF      
PLATH SIR5115 Full HF      
RFSPACE NetSDR        
RFSPACE SDR14 0.19      
RFSPACE SDRIQ        
Rohde & Schwarz EB200       ask
Rohde & Schwarz EM100 0.5 x x  
Rohde & Schwarz EM510       ask
Rohde & Schwarz EM550        
Rohde & Schwarz ESMD       ask
Rohde & Schwarz PR100 0.5 x x  
SDRplay RSP1 6.5     ExtIO
SDRplay RSP1a 6.5     ExtIO, (from shoc)
SDRplay RSP2 6.5     ExtIO, (from shoc)
thinkRF
Berkely Nucleonics Corp
WSA5000-408
BNC RTSA7500-8
0.75     under development
VITA 49
thinkRF
Berkely Nucleonics Corp
WSA5000-427
(WSA5500-427)
BNC RTSA7500-27
0.75     VITA 49
VITA 49 generic support, configurable        
WiNRADiO WR-G31DDC 0.8     ExtIO
WiNRADiO WR-G33DDC 4 x    
WiNRADiO WR-G39DDC 4 x   Up to 2 channels + spectrum
x Others         on request