Types Of Satellites And Their Uses Pdf

They complete exactly one rotation per day.

Types of satellites and their uses pdf.

The orbit of the polar satellite is called polar orbit. 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. These fly at low altitudes about 160km and are used for earth observation and surveillance. Passive satellites and active satellites.

The satellite must be designed specifically to fulfill its role. 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. There are different types of tether satellites including skyhooks format flying tethers momentum exchange tethers and electrodynamic tethers. It can be used for military purposes.

Communication satellites are of two types. The communication satellites are used for spying in enemy countries i e. Polar or sun synchronous satellite. 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.

P assive satellites receive the electromagnetic. A polar satellite is a low altitude satellite orbit around the earth in north south orbit passing over the north pole and south pole. The geo satellites are at an altitude of 35 768 kms which orbit in equatorial plane with 0 degree inclination. These orbit directly above the equator with a period equal to one earth day.

Hence in order to transmit the information or signal over long distances a single satellite or multiple satellites are used to redirect the signals. 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. Tether satellites are mainly used for altitude control stabilization propulsion maintaining relative positions of a larger spacecraft sensor system and momentum exchange. Orbits are categorized by its altitude inclination with reference to the equatorial plane eccentricity synchronization parameters planet centered pseudo orbit and others.

Types of communication satellites. Satellites are mainly categorised as. Satellites weigh around 2 500 kgs. Satellites can be classified based on their applications orbit in which they are placed.

Once out in the space all the different types of satellites follow similar physics principles and are governed by the same math equations.