Predictor
Predictor and Docking function are activated with in ECDIS toolbar.
The Predictor functionality in ECDIS900 displays a future position and a historical position of
the ship. These positions are 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.
Ú
Note:
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
is displayed), either prediction line (ship icon is displayed).
19
Predictor
| ECDIS900 Operator Manual
183
