above video is about remote sensing orbits / remote sensing orbits in hindi. The main key points covered in this video are; orbits; different types of orbits : a)geostationary orbit. b)polar orbit. c)sun synchronous orbit.
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Components Of Remote Sensing :---
There are three major segments/components of Remote sensing -
1- platforms ( • remote sensing platfor... )
2- sensors ( • remote sensing sensors... )
3- orbits
ORBITS -------- ( In remote sensing, orbits plays as one of the major components of remote sensing )
The path followed by a satellite is referred to as its orbit.
Orbit selection can vary in terms of altitude (their height above the Earth's surface) and their orientation and rotation relative to the Earth.
Types of Orbits :---
1)Geostationary Orbit / Geo-synchronous equatorial orbit (GEO)
2)Polar Orbit
3)Sun-synchronous
1)Geostationary Orbit -------- Satellites at very high altitudes, which view the same portion of the Earth's surface at all times have geostationary orbits. These geostationary satellites, at altitudes of approximately 36,000 kilometers, revolve at speeds which match the rotation of the Earth so they seem stationary, relative to the Earth's surface.
This allows the satellites to observe and collect information continuously over specific areas. Weather and communications satellites commonly have these types of orbits.
2)Polar Orbit --------- A polar orbit travels north-south over the poles and takes approximately an hour and a half for a full rotation. As a result, a satellite can observe the entire Earth’s surface (off-nadir) in the time span of 24 hours.
Almost all the satellites that are in a polar orbit are at lower altitudes. Plus, they are often used for applications such as monitoring crops, forests and even global security.
3)Sun-synchronous --------- These orbits allows a satellite to pass over a section of the Earth. Since there are 365 days in a year and 360 degrees in a circle, it means that the satellite has to shift its orbit by approximately one degree per day. These satellites orbit at an altitude between 700 to 800 km.
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