News- Launch of GSAT-6A Lohit K. Yadav
GSAT-6A gives India bigger eye in the sky Source: The Hindu * ISRO successfully placed a c synchronous transier orbit Carried on board: GSLV F-08 GSAT-6 which is already in the orbit Satellite will be placed at height of 36,000 km in a geostationary orbit Will be operating in the crucial S-band wavelength *
ISRO Vision: Harness space technology for National development, while pursuing space science research and planetary exploration Under department of space . Reports to PM of India o First chairman of ISRO: Vikram Sarabhai, also called as the father of Indian Space programme Current chairman of ISRO: Dr. K Sivan Antrix Corporation-Commercial arm of ISRO HQ: Bangalore
Types of satellite launched by ISRO 1. Communication Satellite: . Indian National Satellite (INSAT) Geosynchronous Satellite (GSAT) 2) Earth observation satellites: Remote sensing satellites 3) Experimental Satellites 4). Navigation satellite i) GPS Aided GEO Augmentation Navigation GAGAN) to provide satellite based navigation services with accuracy for civil aviation applications and to provide better Air Traffic Management over Indian Airspace.
Satellite System (IRNSS): Independent Indian i1) Indian Regional Navigation Satellite bbased positioning system for critical national applications. 5). Scientific & Exploration: Eg, Mars orbiter mission, Chandrayaan 1
Types of orbit Orbit of a Satellite is the well defined path around the earth in which it moves Gravitational pull of the earth and the velocity of the satellite are the two basic . . lite in any particular orbit. 1) 2) 3) Three basic types of orbit used: Geo-Synchronous orbits Polar or near polar orbits Sun-Synchronous orbits
1) Geo-Synchronous orbit The time required by the Satellite to cover one revolution is the same as that for the earth to rotate once about it's polar axis. . 2 In order to achieve this orbit period, this Satellite are at at very high altitude, nearly 36,000 km Located in the equatorial plane . 24h
From a point on equator, the Satellite appears to be stationary Direction of revolution is same as that of the earth ( west to east) Mainly used for commun metrological Satellite Due to higher altitude, they covers a wide area o Geosynchronous Orbits Axis * ication and Geostationary Angle of Inclination Geosynchronous
2) Polar (or near polar) orbits Polar Orbt Satellite Relatively medium or low orbits (approx 700-800 km) Orbit period varies from 90-103 minutes Each time newer segment of the earth will be under view of the satellite Complete coverage of the Earth's surface . .
3). Sun-Synchronous orbits Special case of polar orbit . Passes from North to the South poles Satellite passes the same part at 700-800 km altitudes as the earth turns below it roughly the same local time each day orbit areen linel
Lohit Kumar Yadav
IRSME. Graduated in Mechanical engineering. Secured AIR 1 in ESE 2017. Believes in Quality Education for all.