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README.md

Build Status Apache License Go Report

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