Accession Number : ADA291537

Title :   Digital Mapping Charting, and Geodesy Analysis Program Technical Review: Digital Nautical Chart Product 1.

Corporate Author : NAVAL RESEARCH LAB STENNIS SPACE CENTER MS

PDF Url : ADA291537

Report Date : 1994

Pagination or Media Count : 28

Abstract : The first production release of the Digital Nautical Chart (DNC) was a significant improvement over the previous prototypes. However, several key areas are still either incomplete or not addressed in the DNC. The Environment thematic layer still is not present in the DNC and environment data from the paper charts is omitted. DNC accuracies are not clearly stated. Feature labels do not follow the feature they describe, as on the paper charts. There is no standard symbology for the DNC, but there is one for the paper charts. The method of updating and correcting the DNC is not discussed. In addition, data errors between the product specification and the actual database are' noted. Issues raised by reviews of DNC prototypes 2 and 3, but not yet addressed, are restated. (MM)

Descriptors :   *GEODESY, *DIGITAL MAPS, *NAVIGATION CHARTS, MAGNETIC FIELDS, TOPOGRAPHY, ERRORS, COMPASSES, NAVIGATIONAL AIDS, BUOYS, BEACONS, NAUTICAL.

Subject Categories : Land and Riverine Navigation and Guidance
      Underwater and Marine Navigation and Guidance
      Cartography and Aerial Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE