D diego Member Licensed User Longtime User Aug 11, 2010 #21 thanks Mike for your reply. I tried the GPS4ppc tool http://www.b4x.com/forum/open-source-projects/5208-gps4ppc-v2-0-a.html from Erel / Ariel and same result (variable position). Surely the internal GPS of my chinese phone isn't very good... The average seems to be a good way to solve it, works fine? I am thinking in another possible solution, rounding the lat/lon to 4 decimals, and it would have a precission about +-4 mt (I guess it would)
thanks Mike for your reply. I tried the GPS4ppc tool http://www.b4x.com/forum/open-source-projects/5208-gps4ppc-v2-0-a.html from Erel / Ariel and same result (variable position). Surely the internal GPS of my chinese phone isn't very good... The average seems to be a good way to solve it, works fine? I am thinking in another possible solution, rounding the lat/lon to 4 decimals, and it would have a precission about +-4 mt (I guess it would)
M mjcoon Well-Known Member Licensed User Aug 11, 2010 #22 diego said: I tried the GPS4ppc tool http://www.b4x.com/forum/open-source-projects/5208-gps4ppc-v2-0-a.html from Erel / Ariel and same result (variable position). Click to expand... Yes, it is only my version that has the averaging function option! It's a fairly simple bit of code... diego said: Surely the internal GPS of my chinese phone isn't very good... Click to expand... I think the problem is inherent in the physics and is only partly cured by WAAS, differential GPS or expensive survey-grade or military devices. diego said: The average seems to be a good way to solve it, works fine? Click to expand... Yes, provided you don't average bearings like I did! diego said: I am thinking in another possible solution, rounding the lat/lon to 4 decimals, and it would have a precission about +-4 mt (I guess it would) Click to expand... That will help only so long as the variability happens to be in the rounding slack. If it keeps crossing the rounding boundary it may be worse. Mike.
diego said: I tried the GPS4ppc tool http://www.b4x.com/forum/open-source-projects/5208-gps4ppc-v2-0-a.html from Erel / Ariel and same result (variable position). Click to expand... Yes, it is only my version that has the averaging function option! It's a fairly simple bit of code... diego said: Surely the internal GPS of my chinese phone isn't very good... Click to expand... I think the problem is inherent in the physics and is only partly cured by WAAS, differential GPS or expensive survey-grade or military devices. diego said: The average seems to be a good way to solve it, works fine? Click to expand... Yes, provided you don't average bearings like I did! diego said: I am thinking in another possible solution, rounding the lat/lon to 4 decimals, and it would have a precission about +-4 mt (I guess it would) Click to expand... That will help only so long as the variability happens to be in the rounding slack. If it keeps crossing the rounding boundary it may be worse. Mike.
M mjcoon Well-Known Member Licensed User Sep 11, 2010 #23 Monsterman22 said: I run the ComPorts.sbp on my device and this is what I get:... Click to expand... I've Googled for ComPorts.sbp and this is the only hit I get. If it's "the" ComPorts.sbp, where would I find it? Mike. Edit: Ah, found it by Googling for just ComPorts (when it shows up as a ZIP archive). Last edited: Sep 21, 2010
Monsterman22 said: I run the ComPorts.sbp on my device and this is what I get:... Click to expand... I've Googled for ComPorts.sbp and this is the only hit I get. If it's "the" ComPorts.sbp, where would I find it? Mike. Edit: Ah, found it by Googling for just ComPorts (when it shows up as a ZIP archive).