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HSERIN SERIN SERIN2

Discussion in 'Oshonsoft' started by camerart, Apr 28, 2014.

  1. camerart

    camerart Active Member

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    Hi E,

    I'm a bit lost when you talk about arctan, although I could do a calculation. I saw you mentioned a PIC which is an 18F series. After a search for which PIC to use, I've almost decided not to use 18F series and stick to the simulator that etc, for 16 series. I have just received 16F886 PICs today. I was hoping to use these.

    I can make the aerial to suit the angle, but later. I intend to use 360 degree optical discs for resolution, so can move one degree if necessary.

    C
     
  2. SwingeyP

    SwingeyP Member

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    I have to admit to not reading all the posts in this thread but I am a little confused. If you are building an RF tracker why the GPS data?
    If you're using GPS data why the RF tracker? - GPS would give the co-ordinates to point at ??
    If no GPS you lock onto a signal strength or a particular beacon signal or ub carrier etc etc ...?

    Can you tell me what it is you will be tracking, and what the transmitted signal from 'the thing' is.
    Also what frequency are we talking here? - It gets more complicated at LF

    Paul
     
  3. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

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    hi Paul,
    As I understand the App, is that the Remote unit, which can be mobile in someway has a GPS receiver built in.

    The Remote transmits its GPS position data back to a Base station using a 'weak' telemetry link, which cannot be always be relied on.
    So the Base station has a high gain directional aerial which is automatically pointed in the direction of the Remote,using the received GPS data.

    The Remotes GPS position is also used log the position of the Remote as it moves.

    Eric
     
  4. dave

    Dave New Member

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  5. camerart

    camerart Active Member

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    Hi Paul,

    As well as Eric's answer, where a GPS module sends back NMEA data, allowing the aerial to be aimed, I am hoping that the tracker will also be able to follow satellites as well as they send back NMEA data too. (Eric suggests I stick to one SOURCE for ease of design.) All the aerials are manageable sizes, so no LF.

    Camerart.
     
  6. camerart

    camerart Active Member

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  7. Ian Rogers

    Ian Rogers Super Moderator Most Helpful Member

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    Are you able to convert C code to basic?? I have math routines for cos, sin, tan, arccos, arcsin and arctan... But they are in C ... I could convert them to basic but it may take a while...

    The resolution is to 0.1 degree or 3 decimal places....
     

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