Types Of Satellites And Their Uses Pdf

The satellites are launched with a specific objective in mind pertaining to several uses such as communications research in scientific areas forecasting the weather and intelligence.

Types of satellites and their uses pdf.

These orbit directly above the equator with a period equal to one earth day. There are different types of tether satellites including skyhooks format flying tethers momentum exchange tethers and electrodynamic tethers. The orbit of the polar satellite is called polar orbit. The type of satellite that is launched to monitor cloud patterns for a weather station will be different than a satellite launched to send television signals across canada.

A polar satellite is a low altitude satellite orbit around the earth in north south orbit passing over the north pole and south pole. Types of communication satellites. P assive satellites receive the electromagnetic. The geo satellites are at an altitude of 35 768 kms which orbit in equatorial plane with 0 degree inclination.

The communication satellites are used for spying in enemy countries i e. They complete exactly one rotation per day. Orbits are categorized by its altitude inclination with reference to the equatorial plane eccentricity synchronization parameters planet centered pseudo orbit and others. Satellites weigh around 2 500 kgs.

Satellites are mainly categorised as. Tether satellites are mainly used for altitude control stabilization propulsion maintaining relative positions of a larger spacecraft sensor system and momentum exchange. Communication satellites are of two types. Satellites can be classified based on their applications orbit in which they are placed.

The antennas are at fixed positions and use an uplink band of 1 634 5 1 660 5 mhz and downlink in the range of 1 530 1 559 mhz. Once out in the space all the different types of satellites follow similar physics principles and are governed by the same math equations. Types of satellites based on its application are. Satellites can be classified by their function since they are launched into space to do a specific job.

In the context of spaceflight a satellite is an object that has been intentionally placed into orbit these objects are called artificial satellites to distinguish them from natural satellites such as earth s moon. These fly at low altitudes about 160km and are used for earth observation and surveillance. The satellite must be designed specifically to fulfill its role. On 4 october 1957 the soviet union launched the world s first artificial satellite sputnik 1 since then about 8 900 satellites from more than 40 countries have been launched.

Polar or sun synchronous satellite.