METHOD FOR MONITORING DISPLACEMENT OF PYLON FOR TRANSMISSION LINE

摘要

PURPOSE:To arbitrarily select a measuring place and to enhance measuring accuracy by receiving the signals transmitted from a plurality of artificial satellites by receiving antennae and applying operational processing to receiving waves. CONSTITUTION:Artificial satellites 10 are loaded with atomic clocks and extremely accurate signals of frequencies of about 1.2GHz and about 1.5GHz are transmitted from said artificial satellites 10 and opened popularly to be freely receivable on the earth. Antennae 31, 32 are respectively arranged at points P, Q and, on the basis of the clocks at the respective points P, Q, the phase angles of electric waves are measured. A delay time t is generated in the arrival of the electric wave 11 at the point P with respect to the point Q and appears as the phase difference between the receiving waves. The signals respectively received at the points P, Q are converted to electric signals by receivers 51, 52 and stored phase data is subjected to operational processing by a processor 8 to make it possible to calculate a distance S from the above- mentioned phase difference.