Types Of Satellites And Their Uses Pdf

Communication satellites are of two types.

Types of satellites and their uses pdf.

They complete exactly one rotation per day. Satellites weigh around 2 500 kgs. Orbits are categorized by its altitude inclination with reference to the equatorial plane eccentricity synchronization parameters planet centered pseudo orbit and others. Satellites are mainly categorised as.

The geo satellites are at an altitude of 35 768 kms which orbit in equatorial plane with 0 degree inclination. These fly at low altitudes about 160km and are used for earth observation and surveillance. Tether satellites are mainly used for altitude control stabilization propulsion maintaining relative positions of a larger spacecraft sensor system and momentum exchange. Types of satellites based on its application are.

The orbit of the polar satellite is called polar orbit. 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. 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. These orbit directly above the equator with a period equal to one earth day.

Polar or sun synchronous satellite. Satellites can be classified by their function since they are launched into space to do a specific job. Types of communication satellites. The communication satellites are used for spying in enemy countries i e.

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. Once out in the space all the different types of satellites follow similar physics principles and are governed by the same math equations. 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. A polar satellite is a low altitude satellite orbit around the earth in north south orbit passing over the north pole and south pole.

It can be used for military purposes. Passive satellites and active satellites. P assive satellites receive the electromagnetic. Hence in order to transmit the information or signal over long distances a single satellite or multiple satellites are used to redirect the signals.

Satellites can be classified based on their applications orbit in which they are placed.