Re: New APP for satellite observing

From: Daniel J. Grinkevich (
Date: Sun Sep 01 2013 - 16:37:07 UTC

  • Next message: Brad Young: "BY C 090113"

    Speaking of apps, is there one that you can enter your own TLEs into?
    I get ~215ms accuracy over 4G + GPS and ~60ms with Wifi + GPS.
    On Sun, Sep 1, 2013 at 10:53 AM, <>wrote:
    > Dear all,
    > I have just developed a new android application that might be useful to
    > other
    > observers of the list.
    > The app name is "Time The Sat" and it is basically a stopwatch. However,
    > it's
    > more than a stopwatch since it takes
    > care to correct the device clock and to retrieve the observer coordinates
    > as
    > well.
    > The observer location is retrieved using either the network or the internal
    > GPS, while times are always corrected
    > by means of our server (Internet connection is required)
    > Unfortunately, the management of GPS time, in many android devices, is not
    > reliable, leading in some cases
    > to errors even larger than 0.5 s. For this reason I decided to rely on the
    > clock of our server.
    > The program is very simple: when the user presses either a physical or
    > virtual
    > key, the program gets the time
    > and add a new entry in the list, reporting the code of the pressed key and
    > time.
    > The time synchronization can be performed either before or after the
    > observation. In this latter case, the program
    > automatically corrects all gathered times at the end of the observation.
    > This
    > is useful, when the observer wants
    > to open the app and to get times as quick as possible without bothering of
    > synchronizing the clock.
    > At the end of the session, the user can save a text file with the collected
    > times, or share the list using any installed
    > applications that manage text data, e.g. email, sms, editors...
    > The user can also decide to store the time correction, thus it's possible
    > to
    > avoid further synchronizations if the user
    > runs the app many times during the same session.
    > The synchronization accuracy should be usually better than 100 ms, at least
    > for what I can test in Italy, not far from the server.
    > The program is available for free on Google Play Store, under the name
    > "Time
    > The Sat" (search "time the sat satflare")
    > and at the following link:
    > Comments, problems and tests about the time accuracy are welcome!
    > Best regards,
    > Simone
    > _______________________________________________
    > Seesat-l mailing list
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