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The Global Positioning System ( GPS ), originally Navstar GPS, [2] is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. [3] It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near ...
A navigation system on an oil tanker. Navigation [1] is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another. [2] The field of navigation includes four general categories: land navigation, [3] marine navigation, aeronautic navigation, and space navigation.
January 20, 1997 — President Clinton and Vice President Gore begin their second terms. 1997 — Sparked by a global economic crisis scare, the Dow Jones Industrial Average follows world markets and plummets 554.26, or 7.18%, to 7,161.15. 1998 — In the 1998 United States elections, the Republicans hold both the House and the Senate.
A navigation system is a computing system that aids in navigation. Navigation systems may be entirely on board the vehicle or vessel that the system is controlling (for example, on the ship's bridge) or located elsewhere, making use of radio or other signal transmission to control the vehicle or vessel. In some cases, a combination of these ...
Map of the world produced in 1689 by Gerard van Schagen. The history of navigation, or the history of seafaring, is the art of directing vessels upon the open sea through the establishment of its position and course by means of traditional practice, geometry, astronomy, or special instruments. Many peoples have excelled as seafarers, prominent ...
LORAN, short for long range navigation, was a hyperbolic radio navigation system developed in the United States during World War II. It was similar to the UK's Gee system but operated at lower frequencies in order to provide an improved range up to 1,500 miles (2,400 km) with an accuracy of tens of miles. It was first used for ship convoys ...
The history of cartography refers to the development and consequences of cartography, or mapmaking technology, throughout human history. Maps have been one of the most important human inventions for millennia, allowing humans to explain and navigate their way through the world. When and how the earliest maps were made is unclear, but maps of ...
The 1990s(often referred to as the "'90s" or "Nineties") was a decadethat began on January 1, 1990, and ended on December 31, 1999. Known as the "post-Cold War decade", the 1990s are culturally imagined as the period between the Revolutions of 1989and the September 11 attacksin 2001.[1]