Synchronous Calibration System Design of IP Receiving and Sending Equipment Based on GPS

摘要

Alternating electromagnetic field phase shift caused by underground dielectric is a major electrical observation parameter for electrical method exploration, so we need a sufficiently high synchronization accuracy guaranteed. In this paper, we based on the UTC time and GPS second pulse to calibrate local temperature-compensated crystal and make the IP receiving equipment and sending equipment synchronized, so the phase observations accuracy can be greatly improved. Pulse edge difference of the designed stand-alone system is in sub-millisecond, and of the two systems is in microsecond, so it is a good guarantee for precision phase measurements.