航海計測器のドリフトによる航路誤差について

概要

論文の詳細を見る
Instruments have the necessity of the degradation in their characteristics with the lapse of time, which is called "drift". Nautical instruments also have the drift that can not be detected absolutely at sea and accordingly causes routing error. Hence, the course error actuated directly by the drift were studied as for its behavior and effects to distance loss and deviation from original course by computer simulation. The model made for the purpose is shown as follows: x=∫∫vcos(θ)P(θ, t)dθdt y=∫∫vsinθP(θ, t)dθdt where x: distance advanced in original course y: deviation from original course v: ship's speed t: navigating hour θ: course error by drift P(θ, t): p.d.f. of θ in time t And P(θ, t) was led from random walk model.
社団法人日本航海学会の論文
1978-08-25