Turned through Angle Survey
Martin I think Andrew is referring to a Total Station survey, though I presume that data from an old fashioned theodolite would look much the same. What he needs, I guess, is an automatic way of correcting (calibrating?) the horizontal angles with regard to North when the traverse is connected in to fixed points at either end. Graham
Hi all, if you use a theodolite, you will have also an vertikal angle. So this is to calculate too. I would use Excel for the calculation - or not? To calculate the Data you have to write them in a table anyway. Greetings Markus -----Ursprüngliche Nachricht----- Von: therion-bounces@speleo.sk [mailto:therion-bounces@speleo.sk] Im Auftrag von Graham Mullan (External) Gesendet: Mittwoch, 10. Juni 2015 13:30 An: therion@speleo.sk Betreff: [Therion] Turned through Angle Survey Martin I think Andrew is referring to a Total Station survey, though I presume that data from an old fashioned theodolite would look much the same. What he needs, I guess, is an automatic way of correcting (calibrating?) the horizontal angles with regard to North when the traverse is connected in to fixed points at either end. Graham This message is intended solely for the designated recipient(s). It may contain confidential or proprietary information and may be subject to attorney-client privilege or other confidentiality protections. If you are not a designated recipient you may not review, copy or distribute this message. If you receive this in error, please notify the sender by reply e-mail and delete this message. Thank you. Diese Nachricht ist nur für vorgesehene Empfänger bestimmt. Die Nachricht kann vertrauliche oder persönliche Informationen enthalten und kann datenschutzrechtlichen Bestimmungen unterliegen. Wenn Sie kein vorgesehener Empfänger dieser Nachricht sind, ist es Ihnen untersagt, die darin enthaltenen Informationen einzusehen, zu vervielfältigen und zu veröffentlichen. Sollten Sie diese Nachricht versehentlich erhalten, bitten wir Sie, den Sender zu informieren, indem Sie auf diese Nachricht antworten und die Nachricht dann löschen. Vielen Dank.
I requested Survex to be modified to have theodolite turned horizontal angles but there have been other priorities. I have input LIDAR data as Theodolite data into Survex by using the horizontal circle readings as compass readings and then modify the compass calibration value for each station LIDAR data only until the horizontal angle matches the known or calculated magnetic compass reading between the instrument setup station and the initial reference object. You can get some very large compass calibration values. Theodolite vertical circle angle is usually 0 at Zenith with horizontal readings at 90 and 270 depending upon which face (Left or Right) the theodolite has been used to collect the data. Use excel to create inclinometer values. Appreciate that the above is not ideal and was very time consuming but it allowed me to get the Gaping Gill LIDAR data into Survex. Kevin On Wed, Jun 10, 2015 at 2:26 PM, Markus Boldt <markus.boldt@ratiopharm.de> wrote:
Hi all, if you use a theodolite, you will have also an vertikal angle. So this is to calculate too. I would use Excel for the calculation - or not? To calculate the Data you have to write them in a table anyway. Greetings Markus
-----Ursprüngliche Nachricht----- Von: therion-bounces@speleo.sk [mailto:therion-bounces@speleo.sk] Im Auftrag von Graham Mullan (External) Gesendet: Mittwoch, 10. Juni 2015 13:30 An: therion@speleo.sk Betreff: [Therion] Turned through Angle Survey
Martin
I think Andrew is referring to a Total Station survey, though I presume that data from an old fashioned theodolite would look much the same. What he needs, I guess, is an automatic way of correcting (calibrating?) the horizontal angles with regard to North when the traverse is connected in to fixed points at either end.
Graham
This message is intended solely for the designated recipient(s). It may contain confidential or proprietary information and may be subject to attorney-client privilege or other confidentiality protections. If you are not a designated recipient you may not review, copy or distribute this message. If you receive this in error, please notify the sender by reply e-mail and delete this message. Thank you.
Diese Nachricht ist nur für vorgesehene Empfänger bestimmt. Die Nachricht kann vertrauliche oder persönliche Informationen enthalten und kann datenschutzrechtlichen Bestimmungen unterliegen. Wenn Sie kein vorgesehener Empfänger dieser Nachricht sind, ist es Ihnen untersagt, die darin enthaltenen Informationen einzusehen, zu vervielfältigen und zu veröffentlichen. Sollten Sie diese Nachricht versehentlich erhalten, bitten wir Sie, den Sender zu informieren, indem Sie auf diese Nachricht antworten und die Nachricht dann löschen. Vielen Dank.
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participants (4)
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Andrew Atkinson -
Graham Mullan -
kevin dixon -
Markus Boldt