Date of Award


Degree Type


Degree Name

Master of Science in Ocean Engineering


Ocean Engineering

First Advisor

Robert Tyce


A real time geographic information system (RTGIS) toolbox has been designed and implemented to assist in all phases of an oceanographic survey; including pre-cruise planning, data acquisition, survey monitoring, post-cruise report generation, data processing, and data archiving. The RTGIS Toolbox is a software system, written mainly in C and shell scripts, with interfaces to data acquisition hardware; such as DGPS, LORAN, gyro compass, echo sounder, sidescan sonar, and multibeam sonar. At the core of the RTGIS Toolbox is the public domain geographical information system (GIS) GRASS4.1. The functional capabilities of GRASS4.1 are augmented with a suite of peripheral public domain software which specifically addresses oceanographic surveying needs; including GMT for map making, Xsonar for sidescan sonar display and processing, and MB-System for multibeam sonar display and processing. The RTGIS Toolbox runs on the public domain Linux operating system which results in a workstation $10,000-$15,000 less than comparable commercial products (based on 1997 cost estimates). The Tcl/Tk graphical user interface (GUI) development system is used to provide a consistent, Motif-like interface for the RTGIS Toolbox and all its tools; such as the line planning and the data viewing tools. Real time operations are permitted by adding to the base GRASS4.1 software programs which include semaphore resource sharing, serial data acquisition, and interprocess communication via network sockets. The RTGIS Toolbox satisfies many of the surveying needs of an ocean engineering department and investigates survey solutions for commercial and government hydrographers and oceanographers.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.