New Racal Survey And Dredge Control System

—Literature Available System 900, a new automatic data collection and charting system for hydrographic surveying and dredge control, was demonstrated for the first time recently by Racal Positioning Systems Limited. Literature is now available describing System 900 in full detail.

Using a modular and distributed processing approach, System 900 can be configured to suit a small survey boat with a single positioning sensor or a larger vessel incorporating two or more positioning systems and a range of data inputs.

An off-line charting facility accepts the data from both configurations, producing tide reduction, change of vessel position and general editing of all collected data. The data can be from more than one vessel or from previous surveys.

A digitizing feature allows additional information to be added to the database and interactive computer-aided techniques are used to produce the contours. Final charts and overlays are printed on a high-quality graphic plotter.

The modular design allows the data collection and charting operations to be performed in parallel. The charting system can also be used dynamically to produce dredge control data for computer-aided graphical displays to indicate: guidance for the dredger; location of dredge leads and quality control of the dredge area; cross-section profiling showing current with desired overlay; and pre- and post-dredge survey contours to allow volumetric calculations.

For free copies of the Racal System 900 literature, Circle 78 on Reader Service Card

Maritime Reporter Magazine, page 48,  May 1986

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.