中波ビーコンに重畳されたDGPS補正データ放送の受信

概要

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The test transmission of DGPS correction data (Type-1 message at the moment, to be shifted to Type-9 in the regular operation) in Japan has been carried out since December 1995 from MF beacon stations at Turugi-saki (35°08'N, 139°41'E) and Daioh-saki (34°16'N, 136°54'E). Their output power and the transmission rate are 130W and 200bps respectively. The cover area of the original mission of the radiobeacon is 200km. The reception rate in Tokyo and Sagami Bays, inside the circle of 50km from Turugi-saki station, is observed to be more than 99% on 'Shiojimaru'. The maximum duration of the failed reception was 13.2s. It is short enough to obtain the accurate DGPS positioning. The authors also tried to receive it on land in Tokyo urban area about 50km away from Turugi-saki station. The correction data are acquired on a running ordinary passenger car. A fairly well reception rate is available except on a way surrounded by tall buildings. Thus it would be applicable to the car navigation set, since it works well owing to the jointly used INS if correct positions are obtained even with the interval of several minutes.
社団法人日本航海学会の論文
1996-09-25