What Do You Mean By Geostationary Satellite?

A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator, that revolves in the same direction the earth rotates (west to east).

BGAN, the new global mobile communications network, uses geostationary satellites.

What is geostationary satellite and its uses?

Geostationary satellite examples

Geosynchronous satellites are typically used for various purposes, such as communicating back and forth with spacecraft (like the Hubble Space Telescope and space shuttles), voice communication, Internet, broadcasting cable TV and radio signals, as well as weather forecasting.

How does a geostationary satellite work?

A Geosynchonous Orbit (GEO) takes a satellite around the Earth at a rate of once per day, keeping it roughly in the same area over the ground. The “stationary” part of geostationary describes how a satellite in this orbit remains fixed with respect to an observer on the ground.

How big is a geostationary satellite?

Geostationary orbit

A geostationary equatorial orbit (GEO) is a circular geosynchronous orbit in the plane of the Earth’s equator with a radius of approximately 42,164 km (26,199 mi) (measured from the center of the Earth).

Why are geostationary satellites called so?

The term geosynchronous refers to the satellite’s orbital period which enables it to be with the rotation of the Earth (“geo-“). Along with this orbital period requirement, to be geostationary as well, the satellite must be placed in an orbit that puts it in the vicinity over the equator.

What are 3 uses of satellites?

Common types include military and civilian Earth observation satellites, communications satellites, navigation satellites, weather satellites, and space telescopes. Space stations and human spacecraft in orbit are also satellites.

What is the most important application of geostationary satellite?

The first and still, arguably, most important application for communication satellites is in international telephony. Fixed-point telephones relay calls to an earth station, where they are then transmitted to a geostationary satellite.

What are the advantages of geostationary satellite?

Another advantage is the fact that because highly directional antennas can be used, interference from surface-based sources, and from other satellites, is minimized. Geostationary satellites have two major limitations.

What is the period of a geostationary satellite?

A geostationary orbit can be achieved only at an altitude very close to 35,786 km (22,236 mi) and directly above the equator. This equates to an orbital velocity of 3.07 km/s (1.91 mi/s) and an orbital period of 1,436 minutes, which equates to almost exactly one sidereal day (23.934461223 hours).

Is Moon a geostationary satellite?

Geostationary orbit is at 36,000 km from equator. The interesting thing is, satellite in any circular orbit smaller than geostationary orbit takes less than 24 hours to complete a revolution. Similarly, any orbit larger than geostationary orbit makes for an orbital period greater than 24 hours.

What are the 4 types of satellites?

Types of Satellites and Applications

  • Communications Satellite.
  • Remote Sensing Satellite.
  • Navigation Satellite.
  • Geocentric Orbit type staellies – LEO, MEO, HEO.
  • Global Positioning System (GPS)
  • Geostationary Satellites (GEOs)
  • Drone Satellite.
  • Ground Satellite.

How many geostationary satellites are there?

According to Satellite Signals, there are 402 satellites in geosynchronous orbit. At geosynchronous orbit, the “ring” around Earth can accommodate a number of satellites — 1,800 altogether, according to one analysis by Lawrence Roberts, published in the Berkeley Technology Law Review.

What are the characteristics of geostationary satellite?

Characteristics of geostationary satellite. Surface insolation is one of the major indicators for climate research over the Earth system. For the climate research, long-term data and wide range of spatial coverage from the data observed by two or more of satellites of the same orbit are needed.