ground elevation
111Above Aerodrome Elevation — In aviation, Above Aerodrome Elevation (AAE) denotes that an altitude is given above the nearest aerodrome or airport. This is usually identical to the altitude above ground level, but AAE is used to be precise. Also, in extremely hilly or… …
112National Elevation Dataset — The National Elevation Dataset (NED) consists of high precision ground surface elevation data for the United States. It is maintained by the USGS and all the data are in public domain Contents 1 Source 2 Formats 3 Precision 4 …
113Optical fiber composite overhead ground wire — (OPGW) is a type of cable that is used in the construction of electric power transmission and distribution lines. Such cable combines the functions of grounding and communications. An OPGW cable contains a tubular structure with one or more… …
114AN/MPN-14K Mobile Ground Approach System — The AN/MPN 14K Mobile Ground Approach System can be configured as a complete Radar Approach Control (RAPCON) or Ground Controlled Approach (GCA) facility.The radar unit is used by air traffic controllers to identify, sequence, and separate… …
115Surveying — For other uses, see Survey (disambiguation). US Navy Surveyor at work with a leveling instrument …
116LIDAR — A FASOR used at the Starfire Optical Range for LIDAR and laser guide star experiments is tuned to the sodium D2a line and used to excite sodium atoms in the upper atmosphere …
117Alburquerque, Bohol — Infobox Philippine municipality infoboxtitle = Municipality of Alburquerque sealfile = locatormapfile = Ph locator bohol alburquerque.png caption = Map of Bohol showing the location of Alburquerque. region = Central Visayas province = Bohol… …
118Antenna farm — The dish farm at the Raisting Satellite Earth Station complex and Telehouse, Germany s largest satellite communications facility in Raisting, Bavaria, Germany. Antenna farm or satellite dish farm or just dish farm are terms used to describe an… …
119Aircraft collision avoidance systems — Modern aircraft can use several types of collision avoidance systems to prevent unintentional contact with other aircraft, obstacles, or the ground:* Airborne Radar can detect the relative location of other aircraft, and has been in military use… …
120Geography of California — Covering an area of 163,696 sq mi (423,970 km2), California is geographically diverse. The Sierra Nevada Mountains, the fertile farmlands of the Central Valley, and the arid Mojave Desert of the south are some of the major geographic… …
