[talk-ph] Ultimate mapping challenge: marking the Station Balanacan in OSM

maning sambale emmanuel.sambale at gmail.com
Fri Aug 12 09:12:17 BST 2011


Thanks ed,

Has anyone from waypoints  or osm actually visited this reference point?

I actually found a few of these markers.

Example:
http://www.openstreetmap.org/browse/node/1287703706

My handheld GPS is off by 6.92 meters from the published PRS92 coordinates.


On Thu, Aug 11, 2011 at 2:52 PM, Ed Garcia <eppgarcia at gmail.com> wrote:
> Hi Maning,
>
> Take a look at:  http://waypoints.ph/gpsdata.php?wpt=MRQ1
>
> I thik that this is the same Balanacan Station refered to below.
>
> MRQ1 is just one of the 122 GPS station markers established during the PRS92
> project.  As some will describe it, PRS92 is the "improved" or "corrected"
> Luzon Datum  and these markers were supposedly set up by using highly
> accurate GPS systems during the project.  I only knew now that this is Main
> Reference.
>
> The coordinates on the website were already converted to WGS84 datum (from
> PRS92 as printed on the brochures of the said project).
>
> The Station Markers are locate all over the Philippines, please look at:
>
> http://waypoints.ph/categmap.php?cat=GPS
>
>
>
> On Thu, Aug 11, 2011 at 10:55 AM, maning sambale
> <emmanuel.sambale at gmail.com> wrote:
>>
>> The Balanacan Station is the main reference station for all surveying
>> in the Philippines.  A great challenge for any pinoy OSMer to visit
>> and mark. :)
>>
>>
>> http://newsinfo.inquirer.net/39553/marinduque-town-plays-host-to-rock-marking-ph%E2%80%99s-center
>>
>> http://marinduquegov.blogspot.com/2008/08/balanacan-station-mother-of-all-surveys.html
>>
>> According to this pdf,
>>
>> http://gepwebportal.com/docs/dump2000/1211250715-RevisedRegulationsOnLandSurveys.pdf
>>
>> Location is approximately here:
>>
>> http://www.openstreetmap.org/?mlat=13.561389&mlon=121.8675&zoom=14&layers=M
>> --
>> cheers,
>> maning
>> ------------------------------------------------------
>> "Freedom is still the most radical idea of all" -N.Branden
>> wiki: http://esambale.wikispaces.com/
>> blog: http://epsg4253.wordpress.com/
>> ------------------------------------------------------
>>
>> _______________________________________________
>> talk-ph mailing list
>> talk-ph at openstreetmap.org
>> http://lists.openstreetmap.org/listinfo/talk-ph
>
>
>
> --
> website administrator:
> - www.waypoints.ph
> - reeflife.eppgarcia.com
>
> PADI Divemaster #491048
>



-- 
cheers,
maning
------------------------------------------------------
"Freedom is still the most radical idea of all" -N.Branden
wiki: http://esambale.wikispaces.com/
blog: http://epsg4253.wordpress.com/
------------------------------------------------------



More information about the talk-ph mailing list