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New Developer
Posts: 17
Registered: ‎02-11-2010
My Device: 8700
My Carrier: verizon

question about GPS cell tower.How Accuracy it is ?

i am developing gps location with Cell tower.

i use opencellid (http://www.opencellid.org)

 

but it seems the accuracy is very low. for example . i lauch my test app in my office. the opencellid server feed back a xml file . the longitude and latitude is 2.6 kilometres far away. is it a normal accuracy?

 

here is my code:

String url = http://www.opencellid.org/cell/get?key=xxxxx&mcc=xxx&mnc=xxx&cellid=xxx&lac=xx;

                httpConn = (HttpConnection) Connector.open(url, Connector.READ_WRITE,
                                true);
                httpConn.setRequestMethod(HttpConnection.GET);

inputstream = httpConn.openDataInputStream();

....read data use inputstream.

 

is it right?

seems very easy.

 

the data server feed back a xml file like this:

<rsp stat="ok">
<cell range="50000" lac="xxxxxxxxx" lat="xxxxxxx.xxxxxxxxxxx" nbSamples="20" lon="xxxxxxxxxx.xxxxxxxxxxxx" cellId="" mcc="xxxxxxxx" mnc="xxxxxxx"/>
</rsp>

 

 

does the range=50000 means that the precision is 50 kilometers?if so , it is too big a pricision number?

 

in fact. all i need is a precise gps location for both gps and non-gps device. the gps satellite is very precise. but can only be used outdoors.

 

any one have some advise for me?

 

 

 

Developer
Posts: 16,997
Registered: ‎07-29-2008
My Device: Z10 LE, Z30, Passport
My Carrier: O2 Germany

Re: question about GPS cell tower.How Accuracy it is ?

well, the website says:

There is some accuracy issue, as the cell can cover from several hundreds of meters to several kilometers

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