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???
02/19/08 13:29
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 		 #151125 - Re: Accuracy of GSM based positioning
Responding to: ???'s previous message
Accuracy of the GSM based positioning is the trade off we make, for the lower cost of the GSM module compared to GPS module.

A more precise location ID may be obtained by calculating the signal strengths of the individual cell towers in the adjoining area by using the AT+CCED command.

As the signal strengths of the surrounding towers might be unique to a location, a more accurate fix is possible. This of course is theoretical and discounts the possibility of structures that absorb/reflect the signal, hence altering our fix.

List of 37 messages in thread
TopicAuthorDate
GSM based vehicle tracking: Code and Sub-Routines            01/01/70 00:00      
   GNU GPL terms and conditions?            01/01/70 00:00      
      Just a thought?            01/01/70 00:00      
         vehicle tracking, ....            01/01/70 00:00      
            Re:Vehicle tracking, ....            01/01/70 00:00      
         it's nice that he chose to share his work.            01/01/70 00:00      
      Re: GNU GPL terms and conditions?            01/01/70 00:00      
          Re: GNU GPL terms and conditions?            01/01/70 00:00      
         I see - but disagree            01/01/70 00:00      
            Re: I see - but disagree            01/01/70 00:00      
               the trouble is, though...            01/01/70 00:00      
               I say "Purge the EXE"            01/01/70 00:00      
                  Self-extracting ZIPs            01/01/70 00:00      
   Accuracy of GSM based positioning depends            01/01/70 00:00      
      Re: Accuracy of GSM based positioning            01/01/70 00:00      
         Multipath propagation and more            01/01/70 00:00      
            Radiation patterns            01/01/70 00:00      
            Theoretical            01/01/70 00:00      
               How's about adding GPS...?            01/01/70 00:00      
         Some more reading to do            01/01/70 00:00      
            wonderful new word, someone contact Webster            01/01/70 00:00      
               New to me too            01/01/70 00:00      
         Cell ID might not be enough            01/01/70 00:00      
            correction            01/01/70 00:00      
               Thanks !            01/01/70 00:00      
            Re: Cell ID might not be enough            01/01/70 00:00      
   Alternate download ZIP file            01/01/70 00:00      
      File sizes            01/01/70 00:00      
         Bright side            01/01/70 00:00      
   What's an "SRT"            01/01/70 00:00      
      SRT=Subroutine            01/01/70 00:00      
   Code for GSM based tracking.            01/01/70 00:00      
      No problem with that            01/01/70 00:00      
         Re: No problem with that            01/01/70 00:00      
   just curious            01/01/70 00:00      
      Accuracy of a GSM positioning system            01/01/70 00:00      
   Video of the GSM based tracking system in action            01/01/70 00:00      

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