DGPSのデータ伝送遅延に対する測位精度評価

書誌事項

タイトル別名
  • The Evaluation of Positioning Accuracy against Transmission Delay of DGPS Correction Data
  • DGPS ノ データ デンソウ チエン ニ タイスル ソクイ セイド ヒョウカ

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説明

The positioning accuracy is evaluated by the transmission delay of the correction data in DGPS system. The correction data of pseudo range and its temporally varying rate are acquired every second at the monitor station, while at the user station the pseudo ranges and the positions of the satellites are acquired every five seconds. There at some instant of every 5 seconds, the positions are fixed every one second by means of the pseudo ranges which have been corrected by the data sent from the monitor station, delayed from 0 to 60 seconds. The value of 2drms is deduced for 1000 positions at each delay time. The result shows that the value at the delay of 20 seconds is only 1.3 times as large as that at no delay. The present results imply the effectiveness of the DGPS data broadcasting systems now on planning.

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