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Difference Between Geostationary And Geosynchronous Satellite Pdf

difference between geostationary and geosynchronous satellite pdf

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Different orbits serve different purposes.

A satellite in a GEO orbit takes a full 24 hours to circle the Earth. That means a satellite in GEO is always directly over the same spot on Earth. GEO can also be called a Geostationary Orbit.

Geosynchronous vs Geostationary Orbits

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A geosynchronous orbit sometimes abbreviated GSO is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours, 56 minutes, and 4 seconds one sidereal day. The synchronization of rotation and orbital period means that, for an observer on Earth's surface, an object in geosynchronous orbit returns to exactly the same position in the sky after a period of one sidereal day. Over the course of a day, the object's position in the sky may remain still or trace out a path, typically in a figure-8 form , whose precise characteristics depend on the orbit's inclination and eccentricity. A special case of geosynchronous orbit is the geostationary orbit , which is a circular geosynchronous orbit in Earth's equatorial plane. A satellite in a geostationary orbit remains in the same position in the sky to observers on the surface. Communications satellites are often given geostationary or close to geostationary orbits so that the satellite antennas that communicate with them do not have to move, but can be pointed permanently at the fixed location in the sky where the satellite appears.

Geosynchronous orbit

From the center of the Earth, this is approximately 42, kilometers. This distance puts it in the high Earth orbit category. At any inclination, a geosynchronous orbit synchronizes with the rotation of the Earth. More specifically, the time it takes for the Earth to rotate on its axis is 23 hours, 56 minutes, and 4. This makes geosynchronous satellites particularly useful for telecommunications and other remote sensing applications. While geosynchronous satellites can have any inclination, the key difference to geostationary orbit is the fact that they lie on the same plane as the equator. This one special quality makes it unique from geosynchronous orbits.


honeycreekpres.org › Remote Sensing.


Basics of Space Flight

The geostationary orbit is used by many applications including direct broadcast as well as communications or relay systems. The geostationary orbit has the advantage that the satellite remains in the same position throughout the day, and antennas can be directed towards the satellite and remain on track. This factor is of particular importance for applications such as direct broadcast TV where changing directions for the antenna would not be practicable. It is necessary to take care over the use of the abbreviations for geostationary orbit. The idea of a geostationary orbit has been postulated for many years.

Our understanding of orbits dates back to Johannes Kepler in the 17th century. An orbit is the curved path that an object in space such as a star, planet, moon, asteroid or spacecraft takes around another object due to gravity. Gravity causes objects in space that have mass to be attracted to other nearby objects.

Clarke , A. Wireless World , 51 , — Flohrer , T. Fray , : Classification of geosynchronous objects. ESA , pp.

Geostationary Satellite Orbit, GEO

Geosynchronous orbit

A method to precisely estimate the azimuth bias for the geostationary satellite is introduced and evaluated with orbit-determination results. The present method of orbit estimation eliminates the azimuth bias of real tracking data using redundant ranging data from an external station and the predicted azimuth data. The accuracy of the orbit determination employing the corrected azimuth data is verified by comparing it to the ephemeris adjusted using ranging data from two ground stations. To confirm the accuracy, the longitude and latitude of the satellite ground track are compared with the optical telescope scanning results. The accuracy of the present orbit determination satisfies within 2.

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Geostationary orbit basics

Слушая сообщение, он выпил почти целый пакет апельсинового сока. Послание ничем не отличалось от многих других, которые он получал: правительственное учреждение просит его поработать переводчиком в течение нескольких часов сегодня утром. Странным показалось только одно: об этой организации Беккер никогда прежде не слышал. Беккер позвонил одному из своих коллег: - Тебе что-нибудь известно об Агентстве национальной безопасности. Это был не первый его звонок, но ответ оставался неизменным: - Ты имеешь в виду Совет национальной безопасности. Беккер еще раз просмотрел сообщение.

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