ELECTRONIC APPARATUS AND TRAVELING AZIMUTH ESTIMATION PROGRAM

PROBLEM TO BE SOLVED: To improve the accuracy of measurement by autonomous navigation.SOLUTION: An electronic apparatus according to the present invention measures a position by a first positioning method that is executed intermittently and a second positioning method that is executed continuously. This electronic apparatus has a processor for calculating an angular difference formed by two line segments linking the position obtained by the first positioning method at a prescribed point of time and the position obtained by each of the first positioning method and the second positioning method at a point of time later than the prescribed point of time, determining a correction angle using the calculated angular difference and a gain that corresponds to the accuracy of positioning by the first positioning method, correcting the angle used in the second positioning method on the basis of the determined correction angle, and executing a process for estimating the travelling azimuth of the apparatus itself from the corrected angle.SELECTED DRAWING: Figure 2 【課題】自律航法による測位の精度を向上すること。【解決手段】電子機器は、間欠的に実行される第１の測位方法及び継続的に実行される第２の測位方法によって測位する。そして、この電子機器は、所定の時点で前記第１の測位方法によって得られる位置と、前記所定の時点よりも後の時点で前記第１の測位方法及び前記第２の測位方法それぞれによって得られる位置とを結ぶ２つの線分がなす角度差を算出し、算出された角度差と前記第１の測位方法による測位の精度に応じたゲインとを用いて補正角度を決定し、決定された補正角度に基づいて前記第２の測位方法で用いられる角度を補正し、補正された角度から自機器の進行方位を推定する処理を実行するプロセッサを有する。【選択図】図２