The Life of Mr.GPS
by Cookie Monster :D
Crash!!! Why did you have to keep it from us military?! The korean flight was shot down and all 269 people well… let’s just say th
ey are gone. If you want to hear how this tragedy happened then read on. Or if you want to hear about an app that will change your life, read on also.
History of GPS
GPS used to be available only to military officers. GPS was made public due to a tragedy. In 1983, Korean Air Lines Flight 007 entered Soviet airspace after a navigation error and was shot down, killing all 269 passengers. This incident resulted in President Ronald Reagan ordering the Unites States military to make the Global Positioning System available for civilian use once it was completed, so that similar incidents could be avoided in the future.
Transit was the first satellite system launched by the USA and tested by the US Navy in 1960. Just five satellites orbiting the earth allowed ships to fix their position on the seas once every hour. In 1967 Transit was succeeded by the Timation satellite, which demonstrated that highly accurate atomic clocks could be operated in space. GPS developed quickly for military purposes thereafter with a total of 11 "Block" satellites being launched between 1978 and 1985.
By the summer of 1993, the US launched their 24th Navstar satellite into orbit, which completed the modern GPS constellation of satellites - a network of 24 - familiar now as the Global Positioning System, or GPS.
Gps is a very interesting thing. Now it’s time for you to find out what it does. The Global Positioning System is a space-based navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites.
21 GPS satellites and three spare satellites are in orbit at 10,600 miles above the Earth. The satellites are spaced so that from any point on Earth, four satellites will be above the horizon. Each satellite contains a computer, an atomic clock, and a radio. With an understanding of its own orbit and the clock, it continually broadcasts its changing position and time. (Once a day, each satellite checks its own sense of time and position with a ground station and makes any minor correction.)
GPS is a very interesting thing to learn about, including how it works. A GPS receiver must be locked on to the signal of at least 3 satellites to calculate a 2D position (latitude and longitude) and track movement. With four or more satellites in view, the receiver can determine the user's 3-D position (latitude, longitude and altitude).
Have you heard of the word satellites? The Air Force normally flies more than 24 GPS satellites to maintain coverage whenever the baseline satellites are serviced or decommissioned. The extra satellites may increase GPS performance but are not considered part of the core constellation.
Super Cool Facts That Will Blow Your Mind
GPS may sound boring, but it actually can blow your mind! If you think the only GPS apps worth using are the ones that offer basic driving directions, think again. Today, tons of cool apps put your Android phone's location awareness to good use. Whether you're climbing a mountain, hitting the links, or trying to hail a taxi, you can count on an app to make the process easier.
I know about the best types of GPS. The GPS market has advanced quickly, with major brands introducing new devices, features, and refinements more than once a year. This often means that portable units typically offer the latest features. Portables are far less money to purchase, they can be readily shared with family and friends, and we've found that map updates are less costly—some even come with lifetime map updates for a modest additional charge. In addition, the lower purchase price for portables makes it feasible to upgrade devices more often than most people replace their cars.