Do planes use latitude and longitude for navigation?
Airplanes do indeed us longitude and latitude for navigation. The intersecting lines are perfect for flying from one point to another.
Many maps are overprinted with a latitude-longitude grid; it's helpful to use such a map. Most aeronautical maps and marine navigation maps have such a grid pre-printed. Simply find a longitude line (the north-south lines) and go up or down to find your latitude; then follow one of the east-west latitude lines to locate your longitude. alternatively, Google Earth can display a map or satellite photos of any location based on lat/long.
There are several ways in which you can determine your latitude. 1. Use a GPS unit. It will read out your latitude, longitude and precise time. 2. Look on a map; most navigational and topographic maps are scaled in latitude and longitude. 3. Radio navigation beacons like LORAN or R_NAV can give you your latitude. 4. At night, and in the northern hemisphere north of about 15N, you can (weather permitting) take a celestial observation…
How do Global Positioning Systems use elevation points on earth's system to find latitude and longitude?
GPS receivers do not 'use' elevation for anything. They use the signals from several satellites simultaneously to calculate the latitude, longitude, and elevation of the receiver's location. It takes a minimum of three satellites to calculate the latitude and longitude, a minimum of four satellites to calculate the latitude, longitude, and elevation, if more satellites can be found the latitude, longitude, and elevation calculations can be refined more accurately.
Historically, latitude was always measured with the sextant, and longitude with the chronograph (clock). Nowadays, it's all GPS. ------------------- The "sextant", from the latin word for "six", is one-sixth of a circle, and is the primary tool used in celestial navigation. However, before the sextant came into widespread use, the "quadrant" of a quarter-circle and the later "octant", an eighth of a circle, were used.
Stars have been used for navigation for thousands of years. Different stars are in different sections of the sky and can even tell you what your latitude and longitude are, provding you have proper equipment. Before maps where made people had to guess using the North Star and the sun. If they don't have a GPS or a compass they follow the stars.