Precise remote frequency measurement method by GPS carrier phase

GPS carrier phase measurement using geodetic receivers has been used widely in the GPS related areas all over the world and most recently it is used for timing area. In this paper, we have built GPS carrier phase frequency measurement system preliminarily and the detailed procedures were introduced. Several different remote frequency measurement experiments including zero baseline, and short baseline experiments were conducted using GPS carrier phase rather than PN codes in the GPS carrier phase frequency measurement system at NIM and some results were achieved.