By making requirements analysis of the inter satellite link budget software, the software is divided into the interface part and the calculation function module and the overall design diagram is indicated as fig. Satellite operating downlink eirp dbw satellite operating down link eirp watts 6. This allows the received signal quality to be evaluated. Design and implementation of the intersatellite link. Satellite link budget caculations formula set referenceintelsat earth station technology handbook. Tools for link budgets, satellite aiming, modified polar mounts, dual feeds and sun. By making requirements analysis of the intersatellite link budget software, the software is divided into the interface part and the calculation. At the top of this web page is a link to link budgets index page.
Information about the wideband global satcom system also known as the wideband gapfiller satellites, including specifications, space vehicles, block ii followon, launch info, forecast. Complete all white boxes and then click calculate button to obtain results in the green boxes. Detailed and summary link budget reports noise, margin, and power summary reports rain analysis, predicted link availability, and required rain margins. Assuming that a telecommunication system is composed by a transmitter a medium and a receiver, the link budget is the. Wideband global satcom wgs space vehicles, budgetcosts. Satellite communications link budget calculator, lookangle. This leads to pages with precalculated satellite link budgets with useful default parameters inserted which may be amended and then recalculated. Waveform design for kaband satcom high data rate links. Design and implementation of the intersatellite link budget software. Com exam notes for satellite twoway link budgeting, satellite link budget calculator, satellite lookangle calculator, satellite link budget calculator.
Performance of gbs over wgs1, 2, 3 using dvbs and dvbs2. Proceedings of the 2006 ieee conference on military. This discussion is followed by two simple examples. Pdf wgs phased arrays support next generation dod satcom. Hd images and video of the earth from space wgs 5 usa 243 norad 39168 3d online satellite tracking. Overall design of the intersatellite link budget software. A link analysis was performed of the digital video broadcastsatellite dvbs second generation waveform dvbs2 using a commercial ku band and the wideband gapfiller satellite wgs satellite. A link budget is an accounting of all of the power gains and losses that a communication signal experiences in a telecommunication system. This leads to pages with precalculated satellite link budgets with useful default parameters inserted which may be. Calculation of satellite operating band width input data ratekbs link overhead factor%worst case fec rate coding. About customer link budget tool clbt clbt is a tool that satellite operators can easily customize with their own data and provide to their customers for performing link budgets. Overall design of the inter satellite link budget software. Gps l1 link budget satellite tranmitter transmitter power 25 watts 14. Online 3d satellite tracking, with more than 15,000 satellites, pass and flare predictor.
A link budget, in telecommunication and networking, is a written description of all the gains and losses by a transmitter during its active state. This software will provide the satcom planners with the tools to understand and optimize interbeam and user satcom terminal link budget parameters. Satellite telecommunications services, 2 way satellite, including transponder capacity, space segments, system circuit design and teleport interface. Also, note that a 1degree spot beam corresponds to a satellite. The international wideband global satcom wgs program.
Optional four satellite, asi calculator within geo bent pipe link. Arrowe technical services developers of satmaster pc software for the satellite professional. Boeing has received the first onorbit signals from the fourth wideband global satcom. Free satellite engineering software free satcoms uk software. Satmaster pro is a satellite link budget calculator with additional software tools for antenna aiming, dual feed spacing and sun outage prediction. Each wgs satellite provides service in both the x and ka frequency bands, with the unprecedented ability to crossband between the two frequencies onboard the satellite. Calculation of down link path loss downlink frequency ghz. From the link and power budget calculations, the cubesat antenna must achieve a minimum gain of 7 and 5 dbi at 8 and 11. In order to make a budget analysis of the intersatellite link performance quickly. Future military satcom system puts cybersecurity first. Radio link chain small satellite link budget calculation. An introduction to satellite link budget part 1 youtube. It is a sophisticated link budget tool that includes all the necessary satellite technical data, performance specifications, frequency plans, and maps required for. Fundamentals and applications, prenticehall, 1998, and is shown in table 1.
A nice example link budget for a satellite system is taken from page 229 of sklar, b. The 10th wgs satellite is scheduled to launch in 2019, and congress inserted money in the pentagons 2018 budget for wgs 11 and 12. Wgs 5 usa 243 norad 39168 3d online satellite tracking. This course enables the attendee to understand how a satellite link budget is calculated and how the various items of equipment within the system affect the outcome. Wgs4 military communications satellite launch satellite spy. A link analysis also known as a link budget is a theoretical mathematic model of how a satellite circuit should work. This paper will determine the optimum performance for dvbs and dvbs2 for a reference link using wgs as well as dvbs and dvbs2. From system noise figure to gt, swedish microwave abs. Both the gbs and the rcs systems plan to migrate to dvbs2 using the jipm around 2010.
Calculation of satellite operating band width input data ratekbs link overhead factor%worst case fec rate coding bitssymbol m effective in put data rate transmission rate bandwidth hz. The ninth wgs satellite awaits launch on a delta iv rocket in march of 2017. The inter satellite link budget software calculates according to the relevant parameters input by the users. Antenna design software includes a free application for antenna designers from qpar angus smwlink free software from swedish. Wideband global satcom wgs wideband gapfiller system. Ka band satellite communications design analysis and optimisation introduction various types of satellites, including geosynchronous earth orbit geo, medium earth orbit and low earth orbit. Wideband global satcom wgs satellite order and deliveries. One example involves a short range wireless link capable of 40kbitss kbps, which might be suitable to provide a laptop. Smwlink is a useful satellite link budget calculator for the satellite communication professional. The wideband global satcom system wgs is a high capacity satellite communications system planned for use in partnership by the united states department of defense dod, canadian. Separate command line program for batch processing of geo link budgets full version only. In section iii, we present a general kaband satcom link analysis to determine the signaltonoise ratios that are available for communications for typical system parameters and characteristics of interest.
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