| 摘要 |
PROBLEM TO BE SOLVED: To automatically tune FM multiplex broadcasting station for correction in a receiver for measuring moving body position using a GPS. SOLUTION: In addition to constitution of conventional receiver for measuring moving body position, an FM multiplex broadcasting station data memory unit 6 keeps positional data of a plurality of FM multiplex broadcasting stations for correction, and broadcasting frequencies and receiving areas. An FM multiplex tuning processor 7 selects a broadcasting station capable of receiving for longest time when a moving body keeps travelling in the current azimuth, on the basis of positional and azimuth data from a position measuring unit 3, and of positional data of FM multiplex broadcasting stations for correction, data of broadcasting frequencies and data of receiving areas from the FM multiplex broadcasting station data memory unit 6. On receiving these data, the FM multiplex tuning processor 7 determines the receiving frequency of an FM multiplex receiver 5. |
