| 摘要 |
PURPOSE: A short-distance precise position detector is provided to accurately indicate the position of a sub-transmitting and receiving device via a main transmitting and receiving device within a short distance less than 1km. CONSTITUTION: A short-distance precise position detector comprises a sub-transmitting and receiving device(10) installed in a moving object and a main transmitting and receiving device(20) to call the sub-transmitting and receiving device. The sub transmitting and receiving device includes an ID(Identification) number set-up unit(11), a first controller(13), a first GPS(Global Positioning System) receiving unit(15), and a first transmitting and receiving unit(17). The first controller performs an operating program. The first GPS receiving unit outputs present position data having an error range less than 100m. The first transmitting and receiving unit has a transmitting and receiving range less than 1km. The main transmitting and receiving device includes a data input unit(21), a second controller(23), a second transmitting and receiving unit(25), a second GPS receiving unit(27), and a display unit(29). The second controller calculates accurate position within 1m by correcting the position data of the sub-transmitting and receiving device.
|
