Cover: Mapping by Computer Graphics

Mapping by Computer Graphics

Satellite Antenna Coverage

Published 1970

by Neill C. Ostrander

Download

Download eBook for Free

FormatFile SizeNotes
PDF file 1.3 MB

Use Adobe Acrobat Reader version 10 or higher for the best experience.

Purchase

Purchase Print Copy

 Format Price
Add to Cart Paperback53 pages $20.00

Description of computer preparation of maps and overlays, especially for satellite antenna coverage. The examples were produced with an IBM 360/65 and S-C 4060 graphical plotter, using a data tape of 10,500 geographic points stored as 374 strings of alternate latitude and longitude values. This is adequate for maps of scale 1:40,000,000 (at which a world map is 40 in. wide). Rectilinear maps, azimuthal maps, and polar perspective maps (which show the earth as seen from a particular satellite position) are explained, with coordinate transformation equations for each. The most efficient coordinates for rectilinear maps are latitude and longitude; for azimuthal maps, direction cosines. With satellite rays nearly tangent to the earth, using geocentric coordinates and a spherical earth model, coordinates can cause errors of hundreds of miles. Latitude and longitude corrections for the geosynchronous distance of 6.166 earth radii are provided.

This report is part of the RAND report series. The report was a product of RAND from 1948 to 1993 that represented the principal publication documenting and transmitting RAND's major research findings and final research.

This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit www.rand.org/pubs/permissions.

RAND is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.