Ships, Remote Sensing & GIS, Information Systems 

GPS Land Navigation is an essential reference book for anyone planning to use the global positioning system for navigating the backcountry. This book explains all aspects of the GPS system and related equipment. GPS receivers, compasses, altimeters, maps, coordinate systems, and datums are among the major topics covered. Also included are equipment comparisons, and information on how to select the equipment that is right for you. You are provided with clear and simple descriptions of how the GPS system works, and how to make the GPS system work for you. No prior knowledge of land navigation, map reading, or cartography is assumed. Important information is provided about the limitations of GPS receivers, and how to avoid being mislead by your GPS receiver. As a bonus, thousands of actual coordinates that are ready to enter into your receiver are included in several appendicies. - from Amzon