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Satellite Applications
 

Satellite Applications

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A brief introduction into Satellite Applications and their daily usage in the world & space .

A brief introduction into Satellite Applications and their daily usage in the world & space .

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    Satellite Applications Satellite Applications Presentation Transcript

    • { Satellite Applications by Serhan ÖZBEY A presentation made in requirements for EENG 473 TELECOMMUNICATIONS YASAR UNIVERSITY Department of Engineering 27/12/13
    • Since Sputnik 1 has been launched from Soviet’s in 1957 , thousands of satellites have been launched into orbit around the Earth. Satellites are being used for a large number of purposes.Many types including military and civilian Earth observation satellites , communication satellites , navigation satellites and weather satellites. We’re going to observe the main usages of satellites in world in this presentation. ABSTRACT
    • 1. Abstract 2. Contents 3. Satellites : At-a-Glance 4. Satellite Applications 5. Communication Satellites 6. Navigation Satellites 7. Observation Satellites 8. Weather Satellites CONTENTS
    •  a satellite is an artificial object which has been intentionally placed into orbit. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon  The world's first artificial satellite, the Sputnik 1, was launched by the Soviet Union in 1957 Satellites : At-a-Glance
    •  Satellites are being used for a large number of purposes  Space stations and human spacecraft in orbit are also satellites  About 6,600 satellites have been launched. The latest estimates are that 3,600 remain in orbit.Of those, about 1000 are operational ( active) Satellites : At-a-Glance
    •  Satellites are propelled by rockets to their orbits. Usually the launch vehicle itself is a rocket lifting off from a launch pad on land  Satellites are usually semi-independent computer-controlled systems. Satellite subsystems attend many tasks, such as power generation, thermal control etc .. Satellites : At-a-Glance
    •  Satellites has been an interest to military as nowadays it’s a big and important service  There’s three basic non-military satellite services :  Fixed satellite services  Mobile satellite systems  Scientific research satellites (commercial and noncommercial) Satellite Applications
    •  Fixed satellite services Handle hundreds of billions of voice, data, and video transmission tasks across all countries and continents between certain points on the Earth's surface Satellite Applications
    •  Mobile satellite systems Help connect remote regions, vehicles, ships, people and aircraft to other parts of the world and/or other mobile or stationary communications units, in addition to serving as navigation systems. Satellite Applications
    •  Scientific research satellites (commercial and noncommercial) Scientific research satellites provide meteorological information, land survey data (e.g. remote sensing), Amateur Radio, and other different scientific research applications such as earth science, marine science, and atmospheric research. Satellite Applications
    • Communications satellites allow radio, television, and telephone transmissions to be sent live anywhere in the world. Before satellites, transmissions were difficult or impossible at long distances. Communication Satellites
    • Advanced Extremely High Frequency
    • The signals, which travel in straight lines, could not bend around the round Earth to reach a destination far away . Because satellites are in orbit, the signals can be sent instantaneously into space and then redirected to another satellite or directly to their destination. Communication Satellites
    • Applications 1. Telephone 2. Television 3. Digital cinema 4. Radio 5. Internet access 6. Military 7. The future of satellite communication Communication Satellites
    • A satellite navigation or sat nav system is a system of satellites that provide autonomous geo-spatial positioning with global coverage. It allows small electronic receivers to determine their location to high precision (within a few metres) using time signals transmitted along a line of sight by radio from satellites Navigation Satellites
    • The signals also allow the electronic receivers to calculate the current local time to high precision, which allows time synchronisation. A satellite navigation system with global coverage may be termed a global navigation satellite system or GNSS. Navigation Satellites
    • GPS The United States' Global Positioning System (GPS) consists of up to 32 medium Earth orbit satellites in six different orbital planes, with the exact number of satellites varying as older satellites are retired and replaced. Operational since 1978 and globally available since 1994, GPS is currently the world's most utilized satellite navigation system. Navigation Satellites
    • Application 1. Automobiles 2. Aircraft 3. Boats and ships 4. Heavy Equipment 5. Cyclists & Hikers, climbers, 6. Spacecraft Navigation Satellites
    • Observation Satellites Earth observation satellites are satellites specifically designed to observe Earth from orbit, similar to spy satalites but intended for non- military uses such as environmental monitoring, meteo rology, map making etc.
    •  The single location where we can learn the most about our planet is found nowhere on Earth but high up above it.  The ability to fly satellites into space has changed all our lives in many ways, but the single greatest innovation has been the availability of new ways of seeing the world that satellites leave behind. Observation Satellites ERS2
    •  Most Earth observation satellites carry instruments that should be operated at a relatively low altitude Observation Satellites
    •  single satellite image has the potential to show the spread of air pollution across a continent, the precise damage done in a region struck by an earthquake or forest fires, or the entire span of a 500-km hurricane from the calmness of its eye to its outermost storm fronts. Observation Satellites
    •  this monitoring of the Earth’s environment will enable a reliable assessment of the global impact of human activity and the likely future extent of climate change. Observation Satellites
    •  A different type of instrument named a altimeter records very precisely the time it takes for a microwave or laser pulse to be bounced back to the satellite, measuring both land and sea height to an accuracy of a few centimetres. Observation Satellites
    • Google Earth Secret Places
    • Google Earth Secret Places
    • Google Earth Secret Places
    •  Unknown area Russia Censored places
    • Observation  Visible and Near Infrared: 0.6 μm – 1.6 μm – For recording cloud cover during the day  Infrared: 3.9 μm – 7.3 μm (Water Vapour), 8.7 μm, – 13.4 μm (Thermal imaging) Weather Satellite
    •  Weather satellites carry instruments called radiometers (not cameras) that scan the Earth to form images. These instruments usually have some sort of small telescope or antenna, a scanning mechanism, and one or more detectors that detect either visible, infrared, or microwave radiation for the purpose of monitoring weather systems around the world Weather Satellite
    • Types  Geostationary  Polar orbiting Weather Satellite
    •  Geostationary  Geostationary weather satellites orbit the Earth above the Equator at altitudes of 35,880 km (22,300 miles). Because of this orbit, they remain stationary with respect to the rotating Earth Weather Satellite
    •  Polar orbiting  Polar satellites are in sun- synchronous orbits , which means they are able to observe any place on Earth and will view every location twice each day with the same general lighting conditions due to the near-constant local solar time Weather Satellite
    •  Polar orbiting  Polar orbiting weather satellites offer a much better resolution than their geostationary counterparts due their closeness to the Earth. Weather Satellite
    • www.weatherquestions.com/How_do_weather_satellites_work.htm http://www.bibliotecapleyades.net/ciencia/ciencia_googleearth.htm www.howdoesitwork.com Resources