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Return link design for PSD limited mobile satellite communication systems

  • US 20020058477A1
  • Filed: 12/01/2000
  • Published: 05/16/2002
  • Est. Priority Date: 09/28/2000
  • Status: Abandoned Application
First Claim
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1. A method for managing radio frequency (RF) transmissions from an RF system of at least one mobile platform operating within a predetermined coverage region to a space-based transponder orbiting within said coverage region, in a manner to maintain a signal-to-noise ratio (Eb/No) of said RF transmissions within a predetermined range, the method comprising the steps of:

  • using a first control loop to monitor, by a central controller, a signal-to-noise ratio of said RF transmissions received by said satellite transponder, and to transmit commands to said mobile platform via said satellite transponder for maintaining said signal-to-noise ratio within a predetermined range; and

    using a second control loop including a mobile system of said mobile platform to monitor and periodically adjust a power level of said RF transmissions to said satellite transponder to thereby maintain said power level of said RF transmissions at a previously commanded level.

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