By John Spencer, Brian G. Frizzelle, Philip H. Page, John B. Vogler
Global Positioning System is the 1st booklet to steer social scientists with very little mapping or GPS adventure during the technique of amassing box information from begin to finish.
- Takes readers step by step in the course of the key levels of a GPS fieldwork project.
- Explains advanced history themes in transparent, easy-to-understand language.
- Provides uncomplicated guidance for GPS gear selection.
- Provides functional strategies for actual GPS information assortment issues.
- Offers a concise advisor to utilizing GPS-collected info inside of geographic details platforms.
Chapter 1 advent (pages 1–6):
Chapter 2 Why use GPS? (pages 7–25):
Chapter three what's GPS? (pages 26–33):
Chapter four Coordinate structures and Datums (pages 34–49):
Chapter five GPS issues: Getting began (pages 50–70):
Chapter 6 constructing a GPS undertaking (pages 71–75):
Chapter 7 undertaking basics (pages 76–88):
Chapter eight Fieldwork making plans and arrangements: facts and techniques (pages 89–112):
Chapter nine Fieldwork making plans and arrangements: box assets (pages 113–132):
Chapter 10 Fieldwork making plans and arrangements: information caliber and Logistics (pages 133–145):
Chapter eleven Transitioning to Fieldwork (pages 146–169):
Chapter 12 Post?Fieldwork Processing (pages 170–178):
Chapter thirteen using GPS information inside Geographic info structures (pages 179–195):
Chapter 14 end (pages 196–203):
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Extra info for Global Positioning System: A Field Guide for the Social Sciences
A mismatch between datums used will result in misalignment between project spatial data from different sources. 3. Vertical positions (elevations) require specification of a vertical geodetic datum. GPS units usually report elevation as height above the ellipsoid, while other elevation data sources refer to height above the geoid (mean sea level). 4. Map projections are used to take three-dimensional geodetic coordinates and transform them to two-dimensional plane coordinate systems for ease of use on maps and in geographic information systems.
Even though GPS and the executive board are US-based, international users are considered an important user group. The responsibility of representing international users on the executive board has been given to the US Department of State. Three Components of GPS The global positioning system is the integration of three main components: space, or the satellites orbiting the earth; control, the infrastructure monitoring and operating the satellites; and the users. Space As the name suggests, the space segment consists of the satellites orbiting the earth.
In temperate zones, where the ionosphere is more stable, this delay in the signal can result in 2–5 m error. However, in polar and equatorial regions, where the ionosphere is less stable, errors can be greater (Parkinson, 1996b). The signals must also pass through the troposphere before reaching the ground. Further delays in the signal can be encountered here due to variations in humidity, temperature and air pressure. However, these delays have much less impact on the signal, resulting in an error contribution of usually less than 1 m (Parkinson, 1996b).