DataStreamSynchronization ofDistributed Measurements Systems UsingGPSTechnology
Detlef Helling · 2005
www.lmsintl.com Abstract -Global Positioning System (GPS)satellite signals areusedintimeandfrequency metrology ingeneral andaGPS receiver canprovide areference signal forfrequency andtime synchronization inparticular. GPS,wellknownasaversatile, global tool forpositioning, hasalso become theprimary system fordistributing timeandfrequency. GPSdelivers veryprecise timeasaby-product oftheir navigation methodology andthe exacting timing requirements forthesatellite. Formeasurement applications, like recording theaccurate time(Time stamping) andpositioning (extract distances andvelocity speed) are useful information fora single device. Due tothetime accuracy, GPScanbeusedforsynchronization ofmultiple, distributed measurement systems Thearticle describes the measurements setup and theresult ofphase-match specifications between separate, stand-alone systems, which meet figuresof currentinter-channel phase-match specifications..