| 摘要 |
PURPOSE:To obtain high-accuracy position information in real time corresponding to the movement of a mobile station by receiving a decca(loran) radio wave used for the navigation system for ships and positioning the mobile station. CONSTITUTION:A mobile station transmitter-receiver 4-0 controls a central processor 4-1, an area signal calibration device 4-3, an area signal output device 4-4, an area signal display device 4-5, a radio vehicle number generator 4-6, a taxi meter 4-7, an emergency switch 4-8, a controller 4-9, and a microphone 4-10 to make a communication with a base station radio device 2, and the position signal of the mobile station and information on a vehicle number are sent to the base station. Further, an area signal is obtained continuously by a decca(loran) receiver 4-2 and sent automatically to the base station by utilizing a radio wave for voice transmission. Further, a sign post receiver 4-11 receives the radio wave of a sign post transmitter 5 and sends the obtained area signal to the base station by utilizing the radio wave for voice transmission and the device 4-3 corrects an error according to the position signal obtained by the decca receiver and the position signal from the base station. |
