Navigation Articles Navigation, Trying To Make Sense Of It All Navigation System Twenty-eight gram UAV autopilot - integrated GPS, gyros, pressure sensors, includes Horizon ground control software. If you are wondering how people in movies determine their location using maps, charts and compasses, the whole process involves a systematic or more like a scientific procedure. One of the very first things that a navigator does is to draw a line or circle the position of where he is. The best thing to determine this is to take a bearing to or get his position in relation to a landmark. He plots the line or circle the position on a chart or map. When we talk about lines or circles of position, they can be derived from different sources. Among these sources of positions include celestial observation, via terrestrial range especially when two charted points are observed to be in line with each other, by the use of compass bearings to a charted object, the use of radar range, and in some coastlines what is used is deep sounding from an echo sounder located in the lead line. Let's try and make sense out of that. Celestial observation of celestial navigation involves navigating using sun, moon, stars, and planets as reference points or as landmarks. This is a little different from pilotage wherein the navigator relies on seen natural and man made features such as sea marks and beacons to guide his heading and determine where they have been. Electronic navigation is very common nowadays. People are using various electronic equipment such as radio navigation and satellite navigation systems to plot their course or their desired destination. Navigation used to be concentrated more on land navigation since early men didn't embark right away onto sea journeys and explorations. As men learn to travel across continents, the forms of navigation also evolved. From dead reckoning or use navigating without any visible landmarks, to navigating via celestial bodies, to compass directed navigation, men has come a long way. Convert Your Navigation Screen to TV/DVD Tvandnav2Go.com can convert your existing factory car navigation screen to a TV/DVD/satellite screen. You paid so much for your navigation unit, why not get the full value out of it? Then came the LORAN system as a means to navigate. The whole system involves measuring how long between the shifts of radio wave when sent at the same time from a master and slave station. The signals from these two points will create a hyperbolic curve to determine the possible positions of an object. Adding a third source and combining it with the dead reckoning procedure will usually resolve in a single position. Nowadays, the Global Positioning System or GPS has replaced the LORAN system and the celestial body navigation. Through satellite uplinks, the GPS will determine the exact location of a position in 3D trilateration by determining the timing signals sent by four or more satellites. Geoobchod = Praha, Pardubice, H. Králové Prodej, servis, kalibrace - GPS, totální stanice, teodolity, nivelační přístroje, potrubní lasery, rotační lasery, dálkoměry, pásma, vodováhy od výrobců MAGELLAN, NEDO, LEICA, DISTO, SOUTH. Ainuddin Mohamad is the Webmaster of the Online Reading Center at http://onlinereadingcenter.com which features online reading resources.