[分享]A PRACTICAL GUIDE TO GPS - UTM

地址：

http://library.stanford.edu/depts/gis/Instruction.html

介绍：

With respect to the use of two portions of the Canadian topographical map, BOUCHETTE, 31 J/4, used in this Guide, I hereby acknowledge, with thanks, the copyright of the Canadian Government:
© Her Majesty the Queen in Right of Canada reproduced with permission from National Resources Canada.

Because of my agreement with the NRC, I am not able to give anyone permission to reproduce the Guide.

Table of Contents

• Introduction.
• Warning.
• Limitations.
• Accuracy.
• How the GPS works.
• Beware.
• Dilution of Precision - DOP.
• Elevation (Errors).
• Differential GPS (DGPS).
  
• Latitude/Longitude vs. Universal Transverse Mercator Grid.
• Maps.
• Traveling.
• Way-points - WPs.
• UTM - an attempt to explain.
• Using UTM coordinates.
• User Grid for non-standard Maps, e.g. Qu閎ec.
• Setting up your unit.
• Buying a GPS unit.
• Hooking up to an external power supply.
• Mapping - Transferring a Track to a Map.
• Speed.
• Variable readings.
• How not to use your GPS.
• For more information and links.