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PRESENTATION ON VSAT [ VERY SMALL APERTURE TERMINAL ] Saturday, May 21, 2022
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PRESENTATION ON

VSAT [ VERY SMALL APERTURE

TERMINAL ]

Saturday, April 8, 2023

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VSATVSAT VSAT or Very Small Aperture Terminals VSAT or Very Small Aperture Terminals

are small, software-driven earth are small, software-driven earth stations.stations.

It is used for the reliable transmission It is used for the reliable transmission of data, video, or voice via satellite. of data, video, or voice via satellite.

It requires no staff or additional It requires no staff or additional technology to operate it. technology to operate it.

It simply plugs into existing terminal It simply plugs into existing terminal equipment. equipment.

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Short for “Small Aperture Terminal, an earthbound Short for “Small Aperture Terminal, an earthbound station used in satellite communications of data, voice station used in satellite communications of data, voice

and video signals, excluding broadcast television.and video signals, excluding broadcast television.

A VSAT should consists of two partsA VSAT should consists of two parts -- >-- >

VSAT

TransceiverDevice such as

Personal Computer(PC)

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A VSAT consists of two parts, a transceiver A VSAT consists of two parts, a transceiver that is placed outdoors in direct line of that is placed outdoors in direct line of sight to the satellite and a device that is sight to the satellite and a device that is placed indoors to interface the transceiver placed indoors to interface the transceiver with the end user's communications with the end user's communications device, such as a PC .device, such as a PC .

The transceiver receives or sends a signal The transceiver receives or sends a signal to a satellite transponder in the sky. to a satellite transponder in the sky.

The satellite sends and receives signals The satellite sends and receives signals from a ground station computer that acts from a ground station computer that acts as a hub for the system. as a hub for the system.

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Working of HUB stationWorking of HUB station Each end user is interconnected with the Each end user is interconnected with the

hub station via the satellite, forming a star hub station via the satellite, forming a star topology. topology.

The hub controls the entire operation of the The hub controls the entire operation of the network .network .

For one end user to communicate with For one end user to communicate with another, each transmission has to first go to another, each transmission has to first go to the hub station that then retransmits it via the hub station that then retransmits it via the satellite to the other end user's VSAT. the satellite to the other end user's VSAT.

VSAT can handle up to 56 Kbps. VSAT can handle up to 56 Kbps.

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Usage of VSATUsage of VSAT• The first commercial VSAT were C band (6 GHz)

receive-only systems by Equatorial Communications.

• VSAT are used by car dealerships affiliated with manufacturers such as Ford and General Motors

• They are used for transmitting and receiving sales figures and orders, as well as for receiving internal communications, service bulletins, and interactive distance learning courses from manufacturers. The Ford Star network, used by Ford and its local dealers, is an example of this.

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Usage of VSATUsage of VSAT

• VSAT technology is also used for 2-way satellite internet providers such as HughesNet and StarBand in the US.

• Nearly all VSAT systems are now based on IP, with a very broad spectrum of applications.

• As of December 2004, the total number of VSATs ordered stood at over 1 million, with nearly 650,000 in service. Annual VSAT service revenues were $3.88 billion.

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Configurations of VSATConfigurations of VSAT• A A star topologystar topology, using a central uplink site, such , using a central uplink site, such

as a network operations center (NOC), to as a network operations center (NOC), to transport data back and forth to each VSAT transport data back and forth to each VSAT terminal via satellite.terminal via satellite.

• A A mesh topologymesh topology, where each VSAT terminal , where each VSAT terminal relays data via satellite to another terminal by relays data via satellite to another terminal by acting as a hub, minimizing the need for a acting as a hub, minimizing the need for a centralized uplink site.centralized uplink site.

• A combination of both A combination of both star and meshstar and mesh topologies. topologies. These configurations These configurations are utilized to minimize the overall cost of the are utilized to minimize the overall cost of the network, and to alleviate the amount of data that network, and to alleviate the amount of data that has to be relayed through a central uplink site (or has to be relayed through a central uplink site (or sites) of a star or multi-star network. sites) of a star or multi-star network.

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VSAT customersVSAT customers Supermarket Shops.Supermarket Shops. Chemist Shops.Chemist Shops. Garages / vehicle sales / petrol stations / motor spares.Garages / vehicle sales / petrol stations / motor spares. Hotel chains.Hotel chains. Insurance offices.Insurance offices. Car rental offices.Car rental offices. Airlines, travel agents.Airlines, travel agents. Financial institutions - ATM machines.Financial institutions - ATM machines. Manufacturers - sales offices, service divisions, plants.Manufacturers - sales offices, service divisions, plants. Job centers.Job centers. Customs and tax offices / border passport control Customs and tax offices / border passport control

checkpoints.checkpoints. Data file and software distributors.Data file and software distributors. Pipeline monitoring, oil rigs.Pipeline monitoring, oil rigs. Rural telephony, data, videophone.Rural telephony, data, videophone. Schools.Schools. Environmental monitoring. Environmental monitoring.

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Spotlight VSAT Application: SiriCOMM

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About SiriCOMMAbout SiriCOMM

The primary mission of SiriCOMM Inc. is to The primary mission of SiriCOMM Inc. is to develop software to help the trucking industry develop software to help the trucking industry become more productive, use assets better, and become more productive, use assets better, and reduce operating costs. The company has over 40 reduce operating costs. The company has over 40 years experience in developing trucking industry years experience in developing trucking industry applications, but also realized that its software applications, but also realized that its software couldn’t reach its full potential without a couldn’t reach its full potential without a substantially improved means of communication substantially improved means of communication between truck drivers and trucking companies.between truck drivers and trucking companies.

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Characteristics of VSAT Characteristics of VSAT systemssystems

Reliable Communications Reliable Communications VSAT satellite communications VSAT satellite communications

provide virtually error-free digital data provide virtually error-free digital data communications and better than 99.9% communications and better than 99.9% network reliability.network reliability.

Remote CommunicationsRemote Communications

No matter how remote or No matter how remote or dispersed your operations are, VSAT dispersed your operations are, VSAT provide a link to your headquarters. VSAT provide a link to your headquarters. VSAT can provide remote diagnostics, remote can provide remote diagnostics, remote monitoring, and data streaming services monitoring, and data streaming services from remote or hazardous sites.from remote or hazardous sites.

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TimeTime VSAT deployment takes no more than 4-6 VSAT deployment takes no more than 4-6

weeks as compared to 4 to 6 months for leased weeks as compared to 4 to 6 months for leased lineslines. .

Network ManagementNetwork Management Network monitoring and control of the Network monitoring and control of the

entire VSAT network is much simpler than a entire VSAT network is much simpler than a network of leased lines, involving multiple carriers network of leased lines, involving multiple carriers at multiple locations. A much smaller number of at multiple locations. A much smaller number of elements needs to be monitored incase of a VSAT elements needs to be monitored incase of a VSAT network and also the number of vendors and network and also the number of vendors and carriers involved in between any two user terminals carriers involved in between any two user terminals in a VSAT network is typically one.in a VSAT network is typically one.

MaintenanceMaintenance A single point contact for operation, A single point contact for operation,

maintenance, rapid fault isolation and trouble maintenance, rapid fault isolation and trouble shooting makes things very simple for a client, shooting makes things very simple for a client, using VSAT services using VSAT services

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FlexibilityFlexibility

VSAT networks offer enormous VSAT networks offer enormous expansion capabilities. VSAT can be rapidly expansion capabilities. VSAT can be rapidly installed to support the network expansion installed to support the network expansion to any site, no matter however remote.to any site, no matter however remote.

CostCost

A comparison of costs between a A comparison of costs between a VSAT network and a leased line network VSAT network and a leased line network reveals that a VSAT network offers reveals that a VSAT network offers significant savings over a two to three years significant savings over a two to three years timeframe. timeframe.

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System IntegrationSystem Integration IP Based Wan Network Services  IP Based Wan Network Services  E-Mail ServiceE-Mail Service Mobile VSAT Communications System Mobile VSAT Communications System Data and Voice Connectivity Data and Voice Connectivity Fax Fax Video Video Installation, Moving And Set-up Services Installation, Moving And Set-up Services Broadcast Services Broadcast Services Contract Installation and Service on VSAT Networks Contract Installation and Service on VSAT Networks Real-Time Data Acquisition and Broadcast Real-Time Data Acquisition and Broadcast 7/24 Hour Service and Support 7/24 Hour Service and Support CDMS (Code Division Multiple Access) Technology CDMS (Code Division Multiple Access) Technology SCPC (Single Carrier Per Channel) Technology SCPC (Single Carrier Per Channel) Technology TDMA (Time-Division Multiple Access) Technology TDMA (Time-Division Multiple Access) Technology Multiple Network Configurations Multiple Network Configurations

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VSAT Site InstallationVSAT Site Installation The antenna needs to be mounted where it can The antenna needs to be mounted where it can

'see' the satellite and where it is safe from 'see' the satellite and where it is safe from unauthorised access. unauthorised access.

Ground Mount Ground Mount

This involves a tube lowered into a This involves a tube lowered into a hole which is then filled in with concrete.hole which is then filled in with concrete. The The pole should be accurately vertical so that when pole should be accurately vertical so that when you swing the dish around to find the satellite you swing the dish around to find the satellite the elevation angle stays the same all the time.the elevation angle stays the same all the time.

The indoor data processing unit (DPU)The indoor data processing unit (DPU)

The indoor data processing unit (DPU) The indoor data processing unit (DPU) should be located in a dry, cool and clean place. should be located in a dry, cool and clean place.

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SafetySafety

Installing a dish is normally Installing a dish is normally dangerous. Take care not to fall down and dangerous. Take care not to fall down and not to drop tools on others below. Be not to drop tools on others below. Be careful with ladders - always tie off the careful with ladders - always tie off the top to some secure point. A small electric top to some secure point. A small electric shock may make you fall off a ladder so shock may make you fall off a ladder so be extra careful.be extra careful.

TIPS TIPS : ---- : ---- If you are a beginner, If you are a beginner, practice the complete installation at ground practice the complete installation at ground level before moving everything to the roof.level before moving everything to the roof.

Accuracy Accuracy

The dish pointing needs to be The dish pointing needs to be near perfect as the transmit beam is near perfect as the transmit beam is narrower then the receive beam.narrower then the receive beam.

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Thanks

• Submitted by :---- Submitted to :--Amit Kumar Pandey Ashok Behra Sir