The Global Position System (GPS): Applications for Amateur Radio and Amateur Satellites

摘要

-rhis paper discusses the military's NAVSTAR Global Positioning Satellite (GPS) which nowconsists of 1 7 operating satellites and how it can be used in various amateur applications.Basically, each these satellites consist of stable atomic frequency standards (Cesium andRubidium) which broadcast spread-spectrum coded timing signals at L-band (1575.42 and1227.60 MHz) frequencies. The satellites are maintained in stable 12-hour period orbitsand the coded signals also contain high accuracy ephemeris data.