To provide satellite ranging, a system of 21 US satellites orbit earth twice a day at an altitude of 10,900 miles. Accurate to within a yard if supplemented by a ground-based transmitter. Any point on earth can be identified by measuring its distance from a group of these satellites. A navigation device in a boat, car, ship, airplane, or mobile phone locks on to at least four satellites. Each of these satellites measure a precise location of longitude, latitude and, in some cases, altitude and velocity.
What is GLOBAL POSITIONING SYSTEM (GPS)?
Featuring Black’s Law Dictionary
Nothing implied or stated on this page should be construed to be legal, tax, or professional advice. The Law Dictionary is not a law firm and this page should not be interpreted as creating an attorney-client or legal adviser relationship. For questions regarding your specific situation, please consult a qualified attorney.
- What Is A Police Welfare Check?
- Best Way to Find Someone in Jail for Free
- How to Transfer a Car Title When The Owner Is Deceased
- How To Find A Name & Address Using A License Plate Number
- Best Way to Write a Professional Letter to a Judge
- What Can You Do At 18 Legally?
- How To Find An Inmate’s Release Date
- Why Do Policemen Touch Your Tail Light When They Pull You Over?
- Signing a Letter on Someone Else’s Behalf
- How Do You Look up License Plate Numbers?