- 行业: Telecommunications
- Number of terms: 1485
- Number of blossaries: 0
- Company Profile:
Garmin designs, develops, manufactures and markets a diverse family of hand-held, portable and fixed-mount GPS-enabled products and other navigation, communications and information products for the general aviation and consumer markets.
A geometric surface, all of whose plane sections are either ellipses or circles.
Industry:Telecommunications
Current satellite position and timing information transmitted as part of the satellite data message. A set of ephemeris data is valid for several hours.
Industry:Telecommunications
The number of repetitions per unit time of a complete waveform, as of a radio wave (see L1 and L2 frequencies in this glossary).
Industry:Telecommunications
A high-tech version of hide-and-seek. Geocachers seek out hidden treasures utilizing GPS coordinates posted on the Internet by those hiding the cache.
Industry:Telecommunications
A math model representing the size and shape of the earth (or a portion of it).
Industry:Telecommunications
A specific orbit around where a satellite rotates around the earth at the same rotational speed as the earth. A satellite rotating in geosynchronous orbit appears to remain stationary when viewed from a point on or near the equator. It is also referred to as a geostationary orbit.
Industry:Telecommunications
The Global Orbiting Navigational Satellite System; the Russian counterpart to the United States’ GPS system.
Industry:Telecommunications
A pattern of regularly spaced horizontal and vertical lines forming square zones on a map used as a reference for establishing points. Grid examples are UTM, MGRS, and Maidenhead.
Industry:Telecommunications
The direction in which a vehicle is moving. For air and sea operations, this may differ from actual Course Over Ground (COG) due to winds, currents, etc.
Industry:Telecommunications
