SegDSP - Future of RF Monitoring (WIP)

Docker Images

All master branch builds is uploaded to dockerhub with the name racerxdl/segdsp. The following archs are available:

• x86 - racerxdl/segdsp:latest - For any x86 machine
• amd64 - racerxdl/segdsp:amd64-latest - For 64 bit x86 machines
• arm32v6 - racerxdl/segdsp:arm32v6-latest - For 32 bit raspberry pies and equivalents
• arm64v8 - racerxdl/segdsp:arm64v8-latest - For 64 bit raspberry pies and equivalents

Binary Release

Please check the Releases for binary releases.

Nice Sample using SegDSP as a Library

Here is a nice sample using segdsp as a library: https://github.com/racerxdl/segdsp-sample

Running

SegDSP is pretty straightforward to run if you know what you want to capture. It accepts both Environment Variables (suitable for docker containers) or just normal command line arguments.

Examples

WBFM Demodulator

# Argument Mode
segdsp -channelFrequency 106300000 -demodMode FM -fmDeviation 75000 -filterBandwidth 120000 -fftFrequency 106300000 -decimationStage 3 -stationName PU2NVX

# Environment Mode
CENTER_FREQUENCY="106300000" DEMOD_MODE="FM" FM_DEVIATION="75000" FFT_FREQUENCY="106300000" FS_BANDWIDTH="120000" DECIMATION_STAGE="3" STATION_NAME="PU2NVX" segdsp

NBFM Demodulator

# Argument Mode
segdsp -channelFrequency 145570000 -demodMode FM -fmDeviation 5000 -filterBandwidth 15000 -fftFrequency 145570000 -decimationStage 5 -stationName PU2NVX

# Environment Mode
CENTER_FREQUENCY="145570000" DEMOD_MODE="FM" FM_DEVIATION="5000" FS_BANDWIDTH="15000" FFT_FREQUENCY="145570000" DECIMATION_STAGE="5" STATION_NAME="PU2NVX" segdsp

Arguments

Argument	Environment variable	Type	Possible Values	Description	Default Value
-channelFrequency	CENTER_FREQUENCY	number		Channel (IQ) Center Frequency in Hz	106300000
-cpuprofile		string		Write cpu profile to specified file
-decimationStage	DECIMATION_STAGE	number		Channel (IQ) Decimation Stage (The actual decimation will be 2^d)	3
-demodMode	DEMOD_MODE	string	FM, AM	Demodulator Mode: [FM]	FM
-displayPixels	DISPLAY_PIXELS	number		Width in pixels of the FFT	512
-fftDecimationStage	FFT_DECIMATION_STAGE	number		FFT Decimation Stage (The actual decimation will be 2^d)	0
-fftFrequency	FFT_FREQUENCY	number		FFT Center Frequency in Hz	106300000
-filterBandwidth	FS_BANDWIDTH	number		First Stage Filter Bandwidth in Hert	120000
-squelch	SQUELCH	number		Demodulator Squelch in dB	-72
-squelchAlpha	SQUELCH_ALPHA	number		Demodulator Squelch Filter Alpha	0.001
-fmDeviation	FM_DEVIATION	number		FM Demodulator Max Deviation in Hertz	75000
-fmTau	FM_TAU	number		FM Demodulator Tau in seconds (0 to disable)	0.0000075
-amAudioCut	AM_AUDIO_CUT	number		AM Demodulator Audio Low Pass Cut	5000
-httpAddr	HTTP_ADDRESS	string		HTTP Service Address	localhost:8080
-outputRate	OUTPUT_RATE	number		Output Rate in Hz	48000
-record	RECORD	bool	true, false	If it should record output when not squelched	false
-recordMethod	RECORD_METHOD	string	file	Method to use when recording	file
-radioserver	RADIOSERVER	string		radioserver Address	localhost:5555
-stationName	STATION_NAME	string		Name of the Station	SegDSP

Git Hooks

pre-commit

Inside the project repository create the following file:

touch .git/hooks/pre-commit

And paste this code inside it:

#!/bin/bash

echo "Formatting code"
go fmt ./...
exit 0

And give execute permission:

chmod +x .git/hooks/pre-commit