Antenna Aerial Gps
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 NEW MMCX GPS Antenna Aerial Blk for Garmin Holux Receiver  US $11.61
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 Callaway Golf uPro GPS Receiver FREE SHIPPING US $70.00
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 TomTom ONE Classic Automotive GPS Receiver USED US $25.00
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 Yellow Garmin GPSMAP 62 26 Intnl Handheld GPS System US $368.99
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 Garmin GPSMAP 62S 26 LCD Portable Handheld GPS System US $471.99
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 Callaway Golf Company uPro GPS Receiver US $88.00
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 Sony XNV 660BT Multimedia Double Din In Dash DVD Receiver w Navigation Camera US $439.95
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 GARMIN GPSMAP 740S GPS CHARTPLOTTER BUNDLE W DUAL FREQ TRANSOM MOUNT TRANSDUCER US $1,499.99
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 GlobalSat SDIO GPS Receiver US $4.73
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 Sony XNV 770BT 7 Double Din Car Navigation DVD CD Player Bluetooth Receiver US $539.95
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 GARMIN GPSMAP 421 Marine GPS Chartplotter New 010 00764 00 US $349.95
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 GARMIN GPSMAP 740S MARINE GPS CHARTPLOTTER w US COASTAL CHARTS 010 00835 03 US $1,450.00
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 New Sony XNV 770BT Double 2 Din CD DVD Mp3 Player GPS Navigation Bluetooth US $609.00
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 GARMIN GPSMAP 525 GPS Marine Navigation Chartplotter 010 00597 00 US $404.95
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 Magellan Triton 400 GPS ReceiverNEWFREE SH US $95.00
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 Garmin GPSMAP 421s Chartplotter Fishfinder without transducer US $399.00
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 GARMIN GPSMAP 421s GPS Sonar Chartplotter Transducr Fishfinder 010 00764 01 US $431.50
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 UNIVERSAL GPS ANTENNA SAT NAV AERIAL US $11.05
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 Garmin Gpsmap 740s Gps Chart Plotter Sounder Coastal Charts 010 00835 03 US $1,499.99
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 Car DVD GPS Navi Headunit Autoradio For Hyundai New Santa Fe 2006 2011 US $399.99
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 GARMIN GPSMAP 521S GPS MARINE SOUNDER CHARTPLOTTER NEW US $589.75
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 Black MMCX GPS Antenna Aerial for Garmin Holux Receiver US $11.92
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 Car DVD GPS Navi Autoradio Headunit For Ford Mondeo New Focus S Max Kuga US $379.99
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 Car DVD GPS Navi Headunit Autoradio For New MAZDA 6 2008 2011 Free Camera US $409.99
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 Marine ANTENNA GPS AERIAL RECEIVER USB Laptop VISTA 7 US $142.30
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 GARMIN GPSMAP 541 MARINE GPS CHARTPLOTTER BRAND NEW US $589.75
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 New GPS Active Antenna Aerial SMA Male Plug Connector adapter Cable 3m 9 Feet US $6.19
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 7 HD Car DVD GPS Navi Autoraido Headunit For Toyota New RAV4 Free Camera Ant US $399.99
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 Lowrance iFinder H2OC H2O C GPSWAAS Compact handheld GPS color Receiver US $109.99
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 Garmin GPSMAP 740s Chartplotter GMR18 HD Radar Combo US $2,319.00
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 PIONEER AVIC X1 AVIC X1R AVIC X1BT GPS ANTENNA SAT NAV AERIAL US $17.38
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 Sony XNV 770BT 2 Din CD DVD Mp3 Unit w GPS Bluetooth US $629.00
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 GPS antenna Aerial for pioneer AVIC Z2 AVIC Z3 AVICZ3 US $10.00
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 Car DVD GPS Headunit Autoradio For Kia Sportage Cerato Carnival Sorento Magentis US $389.99
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 Connects2 CT27UV25 AM FM Aerial Amplified Shark Antenna US $44.99
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 MCX GPS Antenna Aerial Garmin Road Angel 2 Navman Holux US $12.99
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 GPS NAVIGATION Antenna aerial for ECLIPSE AVN Series US $12.00
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 Garmin Nuvi 1490TV Sat Nav System US $376.18
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 Garmin Gpsmap 740 Gps Chart Plotter US $1,399.99
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 HD Car DVD GPS For TOYOTA RAV4 COROLLA Hilux Land Cruiser Prado Fortuner Yaris US $389.99
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 NEW TOMTOM VIA 125 GPS 45 EUROPE MAPS 5 TOUCH SCREEN US $314.60
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 Garmin GPSMAP 5212 US $2,998.20
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 GARMIN GPSMAP 4012 PRELOADED WORLDWIDE SATELLITE IMAGERY 010 00592 00 US $2,111.46
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 Garmin 010 00591 00 Garmin GPSMAP 4008 Kit US $1,831.69
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 Raymarine E62220 US Raymarine E90W Multifunction Display Kit US $2,333.25
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 NEW TOMTOM URBAN RIDER PRO EUROPEAN MAPS GPS MOTORCYCLE US $505.94
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 Garmin Gpsmap 4008 Preloaded Worldwide Satellite Imagery 010 00591 00 US $1,648.99
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 5M GPS External Antenna Aerial MMCX Male Connector Cable Handheld Receiver US $9.98
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 Universal Front Roof Mounted Aerial Antenna Mast and Base Freelander MG Rover O US $15.73
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 RoyalTek Acer RTA 1000 GPS aerial FM TMC Antenna US $24.88
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 39268 Garmin GPSMAP 62S Rugged High Performance Handheld Worldwide US $419.95
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 39269 Garmin GPSMAP 62st Rugged High Performance Handheld US Topo US $519.95
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 39267 Garmin GPSMAP 62 Rugged High Performance Handheld Worldwide US $329.95
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 12V WORKING SHARK FIN AERIAL CAR ROOF ANTENNA GPS AERO US $13.98
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 RAYMARINE E140W MULTIFUNCTION DISPLAY E62226 US US $5,999.99
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 $200 Rebate Garmin GPSMAP 546S GPS FF ChartPlotter Model 010 00774 02 US $949.88
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 Garmin 010 00594 01 Garmin GPSMAP 5212 US $3,116.81
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 Garmin 010 00594 01 Garmin GPSMAP 5212 Kit US $3,366.15
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 Raymarine E120w E62223US 12 in display 2 year warr US $3,999.00
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 Raymarine C120W System Pack C120W Display RD418D 10M Cable Model T62291 US $3,049.99
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 Garmin Gpsmap 4012 Preloaded Worldwide Satellite Imager US $2,069.99
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 GPS Re Radiation Antenna Aerial reradiating signal wireless SBG 190 US $55.33
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 NEW GARMIN NUVI 2460LT GPS EUROPEAN MAPS SAT NAV US $300.37
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 Real Time Vehicle GPS Tracking Device Locator Tracker US $189.99
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 NEW GARMIN GPSMAP 62ST EU TOPO MAPS HANDHELD GPS SATNAV US $521.81
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 GPS EXTERNAL ANTENNA AERIAL SMB MALE CONNECTOR CABLE US $8.29
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 GPS EXTERNAL ANTENNA AERIAL MCX MALE CONNECTOR CABLE US $8.29
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 GPS EXTERNAL ANTENNA AERIAL MMCX MALE CONNECTOR CABLE US $8.29
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 Sony XNV 770BT 7 Touchscreen Car DVD w Built in TomTom Navigation Camera US $669.00
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 Garmin GPSMAP 62S Handheld GPS Navigator US $392.28
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 Garmin GPSMAP 720 Touchscreen Marine Chartplotter Instant $13000 Rebate US $1,299.99
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 GARMIN GPSMAP 546 Marine GPS Navigator Chartplotter Fishfinder 010 00774 00 US $733.95
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 Garmin GPSMAP 4208 WAAS enabled Includes 12 parallel channel GPS ext receiver US $1,720.00
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 Garmin 010 00774 02 Garmin GPSMAP 546S Chartplotter Fishfinder Combo w o Transdu US $1,006.92
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 Raymarine E62220 US Raymarine E90W Multifunction Display US $2,160.42
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 GARMIN GPSMAP 521s GPS Chartplotter Fishfinder W O Transducer 010 00760 02 NEW US $543.95
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 Brand new digital TV antenna for DVB T Freeview Tuner US $34.76
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 GPS Antenna Amplifier Aerial for Parrot CK3400 CK 3400 US $25.28
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 NEW GARMIN NUVI 2585TV GPS UK EUROPEAN MAPS SAT NAV US $426.94
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 Garmin GPSMAP 740S Radar Pack w GMR 24HD Model 740S GMR24HD US $3,499.98
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Satellite System
The basic types of satellite system include geostationary (GEO), Low Earth Orbit (LEO), Medium Earth Orbit (MEO), and Highly Elliptical Orbit (HEO) satellites. There are also public and private satellite systems such as Television Receive Only (TVRO), Direct Broadcast Satellite (DBS), Global Positioning System (GPS), and multibeam satellite operations.
Geosynchronous satellites orbit the Earth on repeatedly regular points over time. Each GEO satellite is stationary over one spot above the equator and therefore does not need any tracking from receiving and transmitting antennas on the Earth. GEO satellites enable the coverage of weather events. They are especially useful for monitoring severe local storms and tropical cyclones. They are best for television transmission and high-speed data transmission.
Low Earth Orbit (LEO) satellite systems fly very closely to the surface of the Earth, up to 1,500 kilometres in altitude. They deliver more significant voice quality over GEOs and transmit signals with a small margin of delay. Some LEO systems are designed for satellite phones or global mobile personal communications systems. These can carry voice traffic among other data formats.
Medium Earth Orbit (MEO) satellite system operate at about 10,000 kilometres above the Earth, making it lower than GEO orbits but higher than LEO orbits. They have a larger capacity than LEOs. This enables them more flexibility in satisfying shifting market demands for voice or data services.
Highly-elliptical orbit (HEO) satellite systems orbit the Earth in an elliptical path unlike the LEO's and GEO's circular paths. Its elliptical orbit allows a wider view of the Earth and maximizes the amount of time each satellite spends in viewing populated areas. It therefore requires fewer satellites than LEOs while providing an excellent line of sight.
TVRO (Television Receive-Only) and DBS (Direct Broadcast Satellite) are satellite TV systems. TVRO relies on unencrypted feeds transmitted using open standards. They are also often referred to as C-Band Satellite TV, Big Dish TV, or Big Ugly Dish (BUD).
DBS works on higher frequencies. It is capable of transmitting higher power signals. DBS was primarily intended for home reception. This is why it is also known as Direct to Home satellite.
DBS satellites are owned by satellite TV providers. This means it is restricted to provide free channels.
A global positioning satellite system receives and compares the signals from orbiting GPS satellites to determine geographic location. Each satellite can transmit its exact location with a timed reference signal which the GPS uses to determine the distance between satellites. The location can be marked by calculating the point at which all distances cross. The information can be displayed in latitude or longitude format, or as a position on a computer map.
The multibeam satellite operation uses Spatial Division Multiple Access (SDMA) technology. This allows a single satellite to simultaneously communicate to 2 different satellites using several directional antennas.
About the Author
Author: Greg Dempsey - Business Telecommunications
Title: Satellite System
http://www.businesstelecommunication.net/satellite/satellite-system
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