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2. Public Land Survey System - Wikipedia

   en.wikipedia.org/wiki/Public_Land_Survey_System

   The Public Land Survey System (PLSS) is the surveying method developed and used in the United States to plat, or divide, real property for sale and settling. Also known as the Rectangular Survey System, it was created by the Land Ordinance of 1785 to survey land ceded to the United States by the Treaty of Paris in 1783, following the end of the ...

3. Google Earth - Wikipedia

   en.wikipedia.org/wiki/Google_Earth

   Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.

4. Aerial survey - Wikipedia

   en.wikipedia.org/wiki/Aerial_survey

   Terms used in aerial survey. the position of the optical center of the camera at the moment of exposure. the elevation of the exposure station above the datum (usually mean sea level). the vertical distance of the aircraft above the Earth 's surface. tilt the angle between the aerial camera and the horizontal axis perpendicular to the line of ...

5. Comparison of free off-line satellite navigation software

   en.wikipedia.org/wiki/Comparison_of_free_off...

   Comparison of free off-line satellite navigation software. This article contains a list with gratis (but not necessarily open source) satellite navigation (or "GPS") software for a range of devices (PC, laptop, tablet PC, mobile phone, handheld PC (Pocket PC, Palm)). Some of the free software mentioned here does not have detailed maps (or maps ...

6. Section (United States land surveying) - Wikipedia

   en.wikipedia.org/wiki/Section_(United_States...

   The existence of section lines made property descriptions far more straightforward than the old metes and bounds system. The establishment of standard east-west and north-south lines ("township" and "range lines") meant that deeds could be written without regard to temporary terrain features such as trees, piles of rocks, fences, and the like, and be worded in the style such as "Lying and ...

7. Satellite imagery - Wikipedia

   en.wikipedia.org/wiki/Satellite_imagery

   The first images from space were taken on the sub-orbital V-2 rocket flight launched by the US on October 24, 1946. Satellite image of Fortaleza.. Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites operated by governments and businesses around the world.