Link Budgets
Version 10 (Christopher Sigman, 10/10/2018 01:16 am)
| 1 | 1 | J. Simmons | h1. Link Budget References |
|---|---|---|---|
| 2 | 1 | J. Simmons | |
| 3 | 2 | J. Simmons | {{>toc}} |
| 4 | 2 | J. Simmons | |
| 5 | 10 | Christopher Sigman | TODO: write a 1-2 sentence explanation of what a link budget is here, and a summary of what the purpose of this page is. |
| 6 | 10 | Christopher Sigman | |
| 7 | 1 | J. Simmons | h2. Background Material |
| 8 | 1 | J. Simmons | |
| 9 | 1 | J. Simmons | * "Link Budget Calculation":http://www.piscespacific.org/livesite/files/Link_Budget_Calculation.pdf |
| 10 | 1 | J. Simmons | * "Tutorial on Basic Link Budget Analysis":http://www.sss-mag.com/pdf/an9804.pdf |
| 11 | 8 | J. Simmons | * [[Link Budget Video Tutorials]] by Aaron Harper, Mach 30 volunteer |
| 12 | 1 | J. Simmons | |
| 13 | 1 | J. Simmons | h2. Example Calculations |
| 14 | 1 | J. Simmons | |
| 15 | 4 | J. Simmons | Much of this material was reviewed with the stakeholders and the IPT at the "Sprint 1 Stand Up 3 meeting":https://docs.google.com/document/d/17Wc4sMqlUissR5am6ANDcKP-psRQ41ysxOV0vrcgHJA/pub |
| 16 | 4 | J. Simmons | |
| 17 | 5 | J. Simmons | h3. Online Forms |
| 18 | 5 | J. Simmons | |
| 19 | 5 | J. Simmons | Online forms are useful for one off calculations, source code/math not necessarily available to Mach 30. |
| 20 | 5 | J. Simmons | * "Satellite Link Budget Calculator":http://www.satsig.net/linkbugt.htm - simple online form for uplink and downlink calculations |
| 21 | 5 | J. Simmons | * "Satellite Link Budget Calculator page":http://www.tutorialsweb.com/satcom/satellite-link-budget-calculator.htm - a mor complete set of calculations for uplink and downlink |
| 22 | 5 | J. Simmons | * "Geostationary Satellite Link Budget Calculations (Downlink)":http://www.satcom-services.com/VSAT/downlink.html - Geo calculations, not really useful for us, but nice user experience |
| 23 | 5 | J. Simmons | |
| 24 | 5 | J. Simmons | h3. Spreadsheets |
| 25 | 5 | J. Simmons | |
| 26 | 6 | J. Simmons | Spreadsheets require the correct software to run (typically MS Excel), but Mach 30 can investigate the implementation to use as a source for porting to Python library. |
| 27 | 1 | J. Simmons | * "KickSat Ground Station Link Budget":https://github.com/kicksat/groundstation/blob/master/Link%20Budgets.xlsx (MS Excel) - just about the right level of detail for current work (not surprising since KickSat has a similar level of technical complexity and available technical resources as Ground Sphere) |
| 28 | 6 | J. Simmons | * "Jan King's AMSAT link budget":http://www.amsatuk.me.uk/iaru/AMSAT-IARU_Link_Model_Rev2.5.3.xls (MS Excel) - the most extensive calculations, too much detail for now, but will likely be useful for future projects |
| 29 | 6 | J. Simmons | * "KA9Q JJSat link budget design spreadsheet":http://www.ka9q.net/jjsat/full_links.xls (MS Excel) - another set of right sized calculations for our current needs (came from "conceptual design work for JJSat":http://www.ka9q.net/jjsat/) |
| 30 | 6 | J. Simmons | * "ConaSat Link Budget Calculations for DTUSat":http://www.crn2.inpe.br/conasat1/projetos_cubesat/projetos/DTUSat%20-%20Technical%20University%20of%20Denmark%20-%20Denmark/DTUSat%20-%20COM%20-%20Link%20Budget.xls (MS Excel) - the history of this spreadsheet is a little unclear, but it is a very clean implementation of the required calculations |
| 31 | 1 | J. Simmons | |
| 32 | 3 | J. Simmons | h2. Selected Link Budget Source Document |
| 33 | 3 | J. Simmons | |
| 34 | 3 | J. Simmons | The Ground Sphere Mk 3 team has decided to build its Python Link Budget library on the calculations used in the "KickSat Ground Station Link Budget":https://github.com/kicksat/groundstation/blob/master/Link%20Budgets.xlsx. This spreadsheet includes nearly all of the required transmission effects and has been verified by "comparing its results to manual calculations":http://opendesignengine.net/dmsf_files/523?download=. |