ggencoder

GeoGate

GeoGate is an opensource GPS/AIS tracking server framework, that enable easy integration of multiple GPS trackers in WEB applications. It provides data acquisition drivers for typical tracker devices or phone's GPS apps. It handle multiple database backend, and support GeoJSON, AIS & NMEA encoding/decoding. It embed support for multiple classes of trackers, phone-apps, as well an NMEA & AIS simulator.

GeoGate-Encoder

Is the component that support AIS & NMEA encoding decoding for GeoGate. This component is fully independent of GeoGate and can be use without any other references to GeoGate

Install

npm install GGencoder

Usage

// import GeoGate encoding/decoding NMEA/AIS methods AisEncoder = require ("GGencoder").AisEncoder; AisDecoder = require ("GGencoder").AisDecoder; NmeaEncoder = require ("GGencoder").NmeaEncoder; NmeaDecoder = require ("GGencoder").NmeaDecoder;

// decode and AIS message decMsg = new AisDecode (""!AIVDM,2,1,1,A,55?MbV02;H;s<HtKR20EHE:0@T4@Dn2222222216L961O5Gf0NSQEp6ClRp8,0*1C"); if (decMsg.valid) console.log ('%j', decMsg);

// encode AIS message encMsg = new AisEncode ({// class AB static info msgtype : 24, part : 2, mmsi : 271041815, cargo : 60, callsign : "TC6163", dimA : 0, dimB : 15, dimC : 0, dimD : 5 }); if (encMsg.valid) console.log (encMsg.nmea);

// decode NMEA message decMsg = new NmeaDecode ('$GPGGA,064036.289,4836.5375,N,00740.9373,E,1,04,3.2,200.2,M,,,,0000*0E'); if (decMsg.valid) console.log ('%j', decMsg);

// encode NMEA message encMsg = new NmeaEncode ({ // standard class B Position report msgtype : 18, cog : 72.2, sog : 6.1000000000000005, lon : 122.47338666666667, lat : 36.91968, }; if (encMsg.valid) console.log (encMsg.nmea);

test

cd test node --use_strict AisEncodeDecodeTest.js node --use_strict NmeaEncodeDecodeTest.js