oresat-dxwifi-hardware/Link-Model

Link Budget Models for the DxWiFi Channel

The source of these link model spreadsheets are from Jan King and are located at the AMSAT-UK IARU website. The spreadsheets have been customized from revision 2.5.5 which are signified by a suffix letter. In addition, for OreSat protocol information please visit our GitHub protocol page. For OreSat's primary communication link models please visit our GitHub C3 RF page

• The bulk-data mission uplink and downlink using UniClOGS (University Class Open Ground Station)

  • OreSat1_link_model_v2.5.5a_mission_data_uniclogs.xlsx (PDF summary)
  • S band - 2422 MHz - 1Mbps 802.11b
  • 45 deg minimum elevation
  • 1.4 dBi canted turnstile on satellite and 23 dBi parabolic reflector at ground station for uplink
  • 12 dBi helix on satellite and 23 dBi parabolic reflector at ground station for downlink

• The bulk-data mission downlink using a handheld ground station receiver

  • OreSat1_link_model_v2.5.5a_mission_data_handheld.xlsx (PDF summary)
  • S band - 2422 MHz - 1Mbps 802.11b
  • 45 deg minimum elevation
  • 12 dBi helix on satellite and 15 dBi quad helix/patch at ground station

Notes:

• The 'Transmitters' and 'Receivers' sheets have been customized
  • Block diagrams reflect correct design
  • System noise temperature is more precise
• The 'System Performance Summary' sheet has been customized
  • Power levels in dBm
  • More link details