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Thread: Flarm Tracking

  1. #1
    Join Date
    Jan 2011
    Posts
    641

    Flarm Tracking

    Thank you Phillip Lee for the idea/equipment/tech support and Rex for installing the equipment.

    You can now track Gliders with Flarm at WSC

    http://live.glidernet.org/#c=38.9706...2&z=10&m=1&s=1

    We hope to get all pilots to register their Flarm equipment so it displays their contest numbers.



  2. #2
    Join Date
    Jan 2011
    Location
    Schleicher ASW-24
    Posts
    2,148

    Re: Flarm Tracking

    This looks like an exciting addition. I clicked on Menu and see there are parameters we can set on the display on the computer screen.
    One of these race days, maybe we could see a demo before dinner in the pilot club house.

    Click image for larger version. 

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    Peter Kelly

  3. #3
    Join Date
    Mar 2019
    Location
    KCVH
    Posts
    11

    Re: Flarm Tracking

    Thanks to all who flew Friday, we got the first range estimates. The furthest signal received was from Thomas Greenhill 47 nautical miles south over Vacaville with a signal to noise ratio of 6 dB. The signal can be decoded somewhere down around 1 dB, which suggests a maximum range of 81 nautical miles. BTW, it was quite fun to watch everyone live while at home taking care of a baby

    Click image for larger version. 

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    Click image for larger version. 

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  4. #4
    Join Date
    Jan 2011
    Posts
    641

    Re: Flarm Tracking

    Phillip - The pictures you show are in imperical#'s and I like the view better. Can you provide a link that would be better than what I posted?

  5. #5
    Join Date
    Mar 2019
    Location
    KCVH
    Posts
    11

    Re: Flarm Tracking

    Sure. The link is glidertracker.org. There is a settings menu in the top-left corner where you can choose Imperial units and the style of map etc. There are some things that display in metric no matter what (like the barogram), so I filed some bugs to them to hopefully get that resolved.

    Click image for larger version. 

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  6. #6
    Join Date
    Mar 2019
    Location
    KCVH
    Posts
    11

    Re: Flarm Tracking

    Looks like Ramy wins the reception record now.

    Click image for larger version. 

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  7. #7
    Join Date
    Jan 2011
    Posts
    650

    Re: Flarm Tracking

    Glad to see my flarm from 76 miles away near Auburn!
    Is it only receiving flarm signals or also ADSB?
    I am still trying to figure out how to use the web site. Maybe a pre configured link and short tutorial will help. Is there an option for replaying or is it live only?

    Ramy

  8. #8
    Join Date
    Mar 2019
    Location
    KCVH
    Posts
    11

    Re: Flarm Tracking

    I hope the following helps. These things are all over the place in Europe, but currently there are only 3 near Moriarty and now the one at Williams in the US, so I think we will all be learning together about all of the services. But, basically the idea is that it provides a service like the SSA tracker, except second-by-second and without the need to buy a SPOT/Inreach. This allows far greater coverage and even the ability to do contests with live scoring! Below is a brief summary that hopefully gives you a good starting point to explore.

    Also, I am willing to build more receivers if others want them and will host them.

    Overview


    There is a central place for everything related to the Open Glider Network (http://wiki.glidernet.org). The receivers pick up FLARM signals, and the general idea is summarized by the following image

    Click image for larger version. 

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    The receiver supplies data to the OGN servers on the internet, which provide an API to many services (like glidertracker.org). Generally, the data is only available "live." Some trackers cache the data for about a day (ktrax, live.glidernet.org). Since the received data is only FLARM, pilots need to associate their FLARM ID (typically the same as their 'Mode S' ID) with their registration/contest numbers in the OGN database here: https://ddb.glidernet.org. This allows trackers and whatnot to display the contest/registration numbers.

    Services

    Trackers

    - https://www.navplan.ch/#/traffic (this one also shows ads-b traffic)

    - https://ktrax.kisstech.ch/ktrax/

    - http://glidertracker.org/#lat=39.130...7&z=11&id=CN12
    - https://livetrack24.com (this provides 3D views in browser, Google Earth, and SilentWings and also integrates Spot/Inreach)
    - http://live.glidernet.org/#o=1&w=0
    - ... yeah, there are like a thousand of these. See the OGN wiki and pick what you like.

    Receiver Statistics

    - OGN Receiver Range Viewer
    - Grafana: SNR, temperature, etc. over time

    Search and Rescue (SAR)

    - http://wiki.glidernet.org/sar
    Last edited by rocketman768; 03-11-2019 at 10:24 PM.

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