The Global Positioning System Dialog. With the GPS device connected and powered up, open MicroStation's Global Positioning System dialog by clicking on the second icon in the Geographic toolbox: Opening the dialog may take a few seconds while MicroStation attempts to open the specified serial port and find the GPS device.
https://communities.bentley.com/products/microstation/w/microstation__wiki/8955/using-global-positioning-system-devices
Briefly, here's how it works: 1  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. 2  Each satellite contains a computer, an atomic clock, and a radio.
http://searchmobilecomputing.techtarget.com/definition/Global-Positioning-System
The Global Positioning System (GPS) is a network of about 30 satellites orbiting the Earth at an altitude of 20,000 km. The system was originally developed by the US government for military navigation but now anyone with a GPS device, be it a SatNav, mobile phone or handheld GPS unit, can receive the radio signals that the satellites broadcast. Wherever you are on the planet, at least four GPS satellites are ‘visible’ at any time. Each one transmits information about its position and the current time at regular intervals.
http://www.physics.org/article-questions.asp?id=55
Once open, the Global Positioning System dialog includes a toolbar along the top, and three tabs. The rightmost icon indicates the status of the GPS connection. It is green if MicroStation was able to connect to the GPS device and has received a valid report from the device within the last 2 seconds; otherwise it is red.
https://communities.bentley.com/products/microstation/w/microstation__wiki/8955/using-global-positioning-system-devices
The GPS is owned and operated by the U.S. Department of Defense but is available for general use around the world. Briefly, here's how it works: 21 GPS satellites and three spare satellites are in orbit at 10,600 miles above the Earth.
http://searchmobilecomputing.techtarget.com/definition/Global-Positioning-System
Global Positioning System (GPS) Share this item with your network: The GPS (Global Positioning System) is a constellation of approximately 30 well-spaced satellites that orbit the Earth and make it possible for people with ground receivers to pinpoint their geographic location. The location accuracy is anywhere from 100 to 10 meters for most equipment.
http://searchmobilecomputing.techtarget.com/definition/Global-Positioning-System
The first tab contains settings needed by the Global Positioning System interface. GPS Type. The Device Type field allows selection of either NMEA-Compatible or Garmin USB. NMEA GPS Settings. When the Device Type is set to NMEA-Compatible, you can select either Serial Port or File Playback as the source. The Serial Port setting is used when you have a live GPS device connected to your computer.
https://communities.bentley.com/products/microstation/w/microstation__wiki/8955/using-global-positioning-system-devices
If only 3 satellites are available, the GPS receiver can get an approximate position by making the assumption that you are at mean sea level. If you really are at mean sea level, the position will be reasonably accurate. However if you are in the mountains, the 2-D fix could be hundreds of metres off.
https://www.maptoaster.com/maptoaster-topo-nz/articles/how-gps-works/how-gps-works.html
The GPS is being used in science to provide data that has never been available before in the quantity and degree of accuracy that the GPS makes possible. Scientists are using the GPS to measure the movement of the arctic ice sheets, the Earth's tectonic plates, and volcanic activity. Mobile GPS technology has enabled today's smartphones with convenient and highly efficient means for end users to receive navigating instructions via a global positioning system process called trilateration. A phone's built-in GPS receiver also communicates with an array of satellites which provides navigation instructions for those either in an automobile or ...
http://searchmobilecomputing.techtarget.com/definition/Global-Positioning-System
MicroStation contains an interface to Global Positioning System (GPS) devices. The Global Positioning System consists of a constellation of satellites in earth orbit that broadcast radionavigation signals from which GPS devices can calculate reliable positions on a cost-free, continuous, worldwide basis.
https://communities.bentley.com/products/microstation/w/microstation__wiki/8955/using-global-positioning-system-devices
what type of information is available to scientists through a global positioning system (gps) device?
Scientists are using the GPS to measure the movement of the arctic ice sheets, the Earth's tectonic plates, and volcanic activity.