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Wireless signal tracking with GPS

Discussion in 'Northeastern US Wireless Forum' started by Pedal2Medal00, Jan 3, 2004.

  1. Pedal2Medal00

    Pedal2Medal00 Junior Member
    Junior Member

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    Location:
    Portland, Maine
    My Phone:
    LG VX6000
    Wireless Provider(s):
    Verizon Wireless
    Hello all,

    I have a question I have been wondering about for a while...

    I live in Portland, Maine and want to start a signal tracking website so for example as I travel along a road, I would be able to connect my cell phone to my computer and a GPS connected to my computer and have the cell phone record it's info onto a map powered by GPS. I want start a website for maine residents to look onto for cellular advise and my OWN precise cellular maps. Is anything like this possible? I want to avoid having 5 phones in front of me and every 30 seconds recording my location and the signal on each 5 phones.
     
  2. GoodmanR

    GoodmanR Silver Senior Member
    Senior Member

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    Location:
    New York, NY
    My Phone:
    Moto v3 Razr
    Wireless Provider(s):
    Cingular (Voice) + T-Mobile (Blackberry)
    Not really anything that I can think of. Any software that would have to be custom programmed for you...
     
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  3. Pedal2Medal00

    Pedal2Medal00 Junior Member
    Junior Member

    Joined:
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    Location:
    Portland, Maine
    My Phone:
    LG VX6000
    Wireless Provider(s):
    Verizon Wireless
    Does anyone do this, recording signal data with mulitple phones and services either manually or automatically? How?
     
  4. RichXKU

    RichXKU Once had +5 dBm RSSI
    Senior Member

    Joined:
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    Location:
    Southeast PA
    My Phone:
    Motorola i870
    Wireless Provider(s):
    Nextel
    Been there, done that, made These Maps

    A friend on HoFo wrote a script with Perl to record the location from the GPS, and the signal report from a cell phone which was returned when an AT+CSQ? string was sent. No, I don't have it. He's still tweaking it, but in the meantime you can program one yourself with even the simplest scipt in VB, Perl or whatever. all you need to do is:

    Open the COM port the GPS is on
    Open the COM port the phone is on

    Repeat this every x seconds:

    {Send the AT+CSQ? command to the phone
    Record the response from the phone
    Insert comma
    Record the next incoming string from the GPS
    Insert line feed
    Write line to file}

    What you should wind up with is a comma delimited txt file containing the response from the AT+CSQ? request, and the coordinates the GPS sent at the time of the phones response.
    Import this into Excel and trim away unneeded data until all you have left are the coordinates and the signal data (usually reported between 1 and 31)
    It would look something like this
    N,40.8116786074177,W,77.8261131413992,-77.8261131413992,,12,99,,1,A508,3FDF
    (a sample from the raw data used to make one of the maps above)

    The difficult part is finding a way to map this. I used ArcMap, which is Commercial GIS software, since that is my bag [​IMG] so it was pretty easy. I think MS MapPoint is able to process that as well, but can only seperate the signal into a maximum of 8 different levels.

    Hope this helps.

    Edit: just tried it with my VX4400 and it worked fine, I am able to get it to respond with the signal, the battery life, and the SID. There was a command which caused my S46 to respond with the Cell Site ID, but I forget what it was. It would be great if I could get the VX4400 to tell me what PN Offset it was using, and it would be ESPECIALLY great if I could get it to respond with the Ec/Io!
     
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  5. GoodmanR

    GoodmanR Silver Senior Member
    Senior Member

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    Location:
    New York, NY
    My Phone:
    Moto v3 Razr
    Wireless Provider(s):
    Cingular (Voice) + T-Mobile (Blackberry)
    Rich,

    Those are really neat.
     
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