As　geological　exploration　progresses　in　depth　and　scope,　the　distance　between　transmitting　and　receiving　systems　also　increases.　Consequently,　the　synchronization　of　time　between　the　two　becomes　an　increasingly　critical　issue.　In　response,　this　paper　presents　a　proposed　design　for　a　time　synchronization　system　that　is　suitable　for　use　between　transmitting　and　receiving　equipment.　The　system　uses　GPS　as　the　main　clock　source.　The　information　within　the　GPS　system　will　be　encoded　and　decoded　using　the　FPGA.　This　allows　us　to　obtain　both　UTC　time　and　the　time　of　the　IRIG-B　code　format,　enabling　compatibility　with　the　various　system　interfaces.　Our　experiments　have　confirmed　that　the　system　has　a　time　error　at　the　microsecond　level,　and　the　precision　satisfies　the　design　requirements.　This　verifies　the　validity　and　reliability　of　the　system.　©　Published　under　licence　by　IOP　Publishing　Ltd.