AI Assistant
Notifications
Clear all

Carlson Survey 2015 Ground to Grid Problems

4 Posts
4 Users
0 Reactions
361 Views
davis118
(@davis118)
Posts: 22
Member
Topic starter
Translate
English
Spanish
French
German
Italian
Portuguese
Russian
Chinese
Japanese
Korean
Arabic
Hindi
Dutch
Polish
Turkish
Vietnamese
Thai
Swedish
Danish
Finnish
Norwegian
Czech
Hungarian
Romanian
Greek
Hebrew
Indonesian
Malay
Ukrainian
Bulgarian
Croatian
Slovak
Slovenian
Serbian
Lithuanian
Latvian
Estonian
 

I am having issues with Carlson Survey 2015. I locate my control with a Hyper 2 using magnet on a RTK network. I only locate using grid coordinates and also check known geodetic control. My grid coordinates are spot on with the published data. I locate 4 road intersections for aerial reference. I then use the published monument like I would with a total station and apply the scale factor from the monument. I then compare this to the balanced traverse I took independent of the GPS observations. I then translate and rotate the traverse to the monument. They check within couple hundredths.

At this time, I export my line work to Google Earth with the scale factor published. The lines are over 300 feet off. I then do the same using ESRI. The same thing happens. I then compare the actual latitude and longitude. The coordinates are 300 feet off.

I then do the same using the old LDD. I get the correct latitude and longitude. Can someone tell me the deference?


 
Posted : March 1, 2015 9:59 pm
leegreen
(@leegreen)
Posts: 2186
Member
Translate
English
Spanish
French
German
Italian
Portuguese
Russian
Chinese
Japanese
Korean
Arabic
Hindi
Dutch
Polish
Turkish
Vietnamese
Thai
Swedish
Danish
Finnish
Norwegian
Czech
Hungarian
Romanian
Greek
Hebrew
Indonesian
Malay
Ukrainian
Bulgarian
Croatian
Slovak
Slovenian
Serbian
Lithuanian
Latvian
Estonian
 

> I then compare the actual latitude and longitude. The coordinates are 300 feet off.

Try sending to Google Earth without scale factor.

Sounds like scale factor is way wrong, and don't need to enter one for google earth.

Also in Carlson be certain GRID is toggled on with the correct datum projections. Do NOT use local.

300ft is way too much.


 
Posted : March 2, 2015 6:39 am
paul-in-pa
(@paul-in-pa)
Posts: 6034
Member
Translate
English
Spanish
French
German
Italian
Portuguese
Russian
Chinese
Japanese
Korean
Arabic
Hindi
Dutch
Polish
Turkish
Vietnamese
Thai
Swedish
Danish
Finnish
Norwegian
Czech
Hungarian
Romanian
Greek
Hebrew
Indonesian
Malay
Ukrainian
Bulgarian
Croatian
Slovak
Slovenian
Serbian
Lithuanian
Latvian
Estonian
 

I Am Pretty Sure Google Earth Is On The Grid

Since it always correlates well when I go to Google Earth with my grid info.

However from the information you supply it appears you are applying the scale factor to the wrong point.

Numbers do not jump that far off without some misapplied assistance.

Paul in PA


 
Posted : March 2, 2015 7:26 am
shawn-billings
(@shawn-billings)
Posts: 2691
Member
Translate
English
Spanish
French
German
Italian
Portuguese
Russian
Chinese
Japanese
Korean
Arabic
Hindi
Dutch
Polish
Turkish
Vietnamese
Thai
Swedish
Danish
Finnish
Norwegian
Czech
Hungarian
Romanian
Greek
Hebrew
Indonesian
Malay
Ukrainian
Bulgarian
Croatian
Slovak
Slovenian
Serbian
Lithuanian
Latvian
Estonian
 

I Am Pretty Sure Google Earth Is On The Grid

Google Earth kmz/kml files are Lat/Long


 
Posted : March 2, 2015 11:17 am