| 摘要 |
PURPOSE: A system for measuring subsidence amount of a reclaimed land using GPS is provided to grasp and monitor the extent and the state of each point of the reclaimed land in a main computer of a long distance censorship. CONSTITUTION: A system for measuring subsidence amount of a reclaimed land using GPS includes the steps of receiving GPS signal transmitted from a satellite in a reference station and a reclaimed land(S1,S2), checking data transmission time of a wireless modem for preventing cross of transmission data to be transmitted to a wireless modem of a censorship in MCU(Micro Control Unit) located in the reference station and the reclaimed land(S3,S4), transmitting the current GPS reception data by the wireless modem of the reference station by using carrier wave transmission method(S5), transmitting the current GPS reception data at each point of the reclaimed land at a regular time gap from 1'th position to N'th position by the wireless modem of the reclaimed land by using carrier wave transmission method(S6), receiving data transmitted from the reference station and the reclaimed land with a wireless modem in the censorship(S7), calculating location coordinates of each point of the reclaimed land by analyzing data with software of a main computer(S8), and displaying to observe the subsidence state of the reclaimed land with a monitor by constructing coordinates change state monitoring program in the main computer(S9).
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