To provide a plotter enabling a user to save time and effort for correcting a magnetic compass error.SOLUTION: When a period during which ship's moving speed has exceeded a predetermined speed has continued for a predetermined period, coefficient acquisition means acquires a coefficient for correction used for compass azimuth correction based on the moving azimuth acquired by the moving azimuth acquisition means during a predetermined period and the compass azimuth acquired by the compass azimuth acquisition means.The correction means performs correction on the compass azimuth using the coefficient.SELECTED DRAWING: Figure 7
【課題】使用者が磁気コンパスの誤差を補正する手間を省くことができるプロッタを提供すること。【解決手段】船の移動速度が所定速度以上となった期間が所定期間継続した場合に、所定期間中に移動方位角取得手段により取得される移動方位角とコンパス方位角取得手段により取得されるコンパス方位角とに基づいてコンパス方位角の補正に用いられる補正のための係数を係数取得手段が取得する。その係数を用いて補正手段が、コンパス方位角の補正を行う。【選択図】図７
Document information
PLOTTER
プロッタ
2020-01-16
Patent
Electronic Resource
Japanese
| IPC: | G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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