Survey of Tugaru Strait by Decca Navigator

Abstract

The Decca Navigator System was applied to the survey operation in Tugaru Strait. The stability of the pattern obtained in this survey was 5/1000 of a lane. Using this equipment, the measurement of the velocity of propagation of radio wave is possible. For this purpose, the phase differences of the radio waves are observed either extensions of the base line. The result obtained is 299, 771.9 km/sec, which is little different from the value of the velocity of 299, 700 km/sec presumed in forming the patterns.