Gps (Global Positioning System)
I. Introduction
Global Positioning System or GPS is a navigation system that used satellites to navigate. GPS are used at most of the places such as, cars, aircrafts, ships, and mobile phone. Currently there are 31 GPS satellites orbiting Earth in 12 hours each. GPS help human activities in this world through navigating to safe more time, safeties in flight, to locate their locations for purposes like in military, etc. GPS plays important role in current human activities.
II. History
At the beginning of the discovery of GPS, it was only mean to use by military department, but at the end it was allowed to be use by civilians for safety reason. On 1983, USSR’s interceptor shot down Korean Airlines 007 after it accidentally passing USSR’s territory. After this accident, Ronald Reagan, American President, immediately stated that GPS would be allowed for citizens used once it was completed. The concepts of GPS was invented by Ivan getting, an American Scientist, on 1960 and later it was developed in United States Air forces or USAF and U.S. Navy. Before Ivan Getting’s concept about GPS, scientists in 1957 also discovered the other concept, but different in how it works. The concept was invented from the relationship of radio transmission and Doppler effect from the launch of Sputnik I at 1957. By this phenomenon, the scientist can identify the locations of it by measuring the Doppler distortion creating NAVSAT (Navy Navigation Satellite System), which is the first satellite-based navigation system; while Ivan Getting used GPS by using how long does the transmission of radio signal take time. Ivan Getting concept of GPS was first launched with Block I satellites on 1978, which was invented by Roger L. Easton. These predecessors of GPS help current scientists to keep developing new GPS. Recently, the newest GPS satellites block IIF-3 was launched on 4 October 2012. The development of GPS including the ability to receive more signals clearly, ability to penetrate
Global Positioning System or GPS is a navigation system that used satellites to navigate. GPS are used at most of the places such as, cars, aircrafts, ships, and mobile phone. Currently there are 31 GPS satellites orbiting Earth in 12 hours each. GPS help human activities in this world through navigating to safe more time, safeties in flight, to locate their locations for purposes like in military, etc. GPS plays important role in current human activities.
II. History
At the beginning of the discovery of GPS, it was only mean to use by military department, but at the end it was allowed to be use by civilians for safety reason. On 1983, USSR’s interceptor shot down Korean Airlines 007 after it accidentally passing USSR’s territory. After this accident, Ronald Reagan, American President, immediately stated that GPS would be allowed for citizens used once it was completed. The concepts of GPS was invented by Ivan getting, an American Scientist, on 1960 and later it was developed in United States Air forces or USAF and U.S. Navy. Before Ivan Getting’s concept about GPS, scientists in 1957 also discovered the other concept, but different in how it works. The concept was invented from the relationship of radio transmission and Doppler effect from the launch of Sputnik I at 1957. By this phenomenon, the scientist can identify the locations of it by measuring the Doppler distortion creating NAVSAT (Navy Navigation Satellite System), which is the first satellite-based navigation system; while Ivan Getting used GPS by using how long does the transmission of radio signal take time. Ivan Getting concept of GPS was first launched with Block I satellites on 1978, which was invented by Roger L. Easton. These predecessors of GPS help current scientists to keep developing new GPS. Recently, the newest GPS satellites block IIF-3 was launched on 4 October 2012. The development of GPS including the ability to receive more signals clearly, ability to penetrate
Bibliography: Bellis, Mary. "History of the Global Positioning System -Â GPS." About.com Inventors. N.p., n.d. Web. 27 Feb. 2013. "Garmin." N.p., n.d. Web. 27 Feb. 2013. "Global Positioning System." Wikipedia. Wikimedia Foundation, 27 Feb. 2013. Web. 27 Feb. 2013. Brain, Marshall. "How GPS Receivers Work." HowStuffWorks. N.p., n.d. Web. 27 Feb. 2013. "List of GPS Satellite Launches." Wikipedia. Wikimedia Foundation, 17 Jan. 2013. Web. 27 Feb. 2013. Lowry, Gary. "The Development of GPS." The Development of GPS. N.p., n.d. Web. 27 Feb. 2013. "Space Segment." GPS.gov:. N.p., n.d. Web. 27 Feb. 2013. "Total Number of GPS Satellites?" - Yahoo! Answers India. N.p., n.d. Web. 27 Feb. 2013. "What Kind of Waves Are Used in GPS (radio Waves, Microwaves Etc)?" Yahoo! Answers. Yahoo!, n.d. Web. 27 Feb. 2013. "What Signal Does GPS Use - Mio Technology." What Signal Does GPS Use - Mio Technology. N.p., n.d. Web. 27 Feb. 2013