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Thread: Ratio between messages with barometric and GNSS height.

  1. #1
    Passenger
    Join Date
    Jun 2016
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    2

    Ratio between messages with barometric and GNSS height.

    Hello,

    Does anyone know the ratio between emitted ADS-B position messages from aircrafts containing barometric vs. GNSS heights?

  2. #2
    Passenger
    Join Date
    Dec 2015
    Posts
    27
    Quote Originally Posted by JKF View Post
    Hello,

    Does anyone know the ratio between emitted ADS-B position messages from aircrafts containing barometric vs. GNSS heights?
    Just a few statistics from my receiver near Frankfurt, germany after running ModesDeco2 26 days uninterruptedly:
    Airborn position reports with pressure height: 50.270.000 (quite the same with velocity reports)
    Airborn position report with GPS HAE: 3.839
    targeting 76ppm of the messages providing a GPS height.

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