Predictor Overview
Predictor
PREDICTOR OVERVIEW
Predictor and Docking function are activated within the ECDIS toolbar.
The Predictor functionality in ECDIS900 allows for the display of the future position and the
historical position of the ship. This position is calculated based on former ship data and
applying some user defined settings. The Predictor is a navigation aid to be used for
continuous dynamic ship’s position prediction within 15 – 60 secs.
The predictor calculations are base on a vector prediction algorithm that uses the latest
historical data: ship’s position, speed over ground, course over ground and heading. Rate of
Turn and ROT acceleration are calculated from historical values and are used to predict ROT
and heading.
The user has to enter proper ship's parameters and settings for a accurate calculation.
To run the function, an interface to GPS and Gyro must be available.
N.B. The heading input value should at least contain one decimal.
To activate the function press the button Target Prediction and toggle the check box “Use
vector predictor” On.
The active leg window available in the console area allows the user to control the position of
the ship against the active route
PRINCIPLE
To be able to calculate the future position, ECDIS must be connected to GPS, gyro and log.
Depending from the chart scale the Predictor displays either prediction corridor (ship shape
displayed), either prediction line (ship icon displayed).
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