Traversing with gls-2000

Discuss Topcon hardware here.
Post Reply
User avatar
landmeterbeuckx
V.I.P Member
V.I.P Member
Posts: 1615
Joined: Tue May 01, 2012 5:19 pm
11
Full Name: Lieven Beuckx
Company Details: Studiebureau Beuckx
Company Position Title: Owner
Country: Belgium
Linkedin Profile: Yes
Has thanked: 183 times
Been thanked: 548 times

Traversing with gls-2000

Post by landmeterbeuckx »

I wanted to test a site with a gls-2000 assuming it could traverse automaticaly.

Now i hear froom the dealer thet it's necessary to measure the points before where you want to place the scanner. I always assumed that you give a position for the first point and a backsight and that the instrument itself calculates the foresight where a prism is placed.

Can anyone confirm which method is to be used? If all the station points have to be known before measuring it is pretty useless (personal opinion).
LSBbvba
Surveying services - 3D Laserscanning
Tel : +32477753126
www.lsbbvba.be
[email protected]
User avatar
Jason Warren
Administrator
Administrator
Posts: 4224
Joined: Thu Aug 16, 2007 9:21 am
16
Full Name: Jason Warren
Company Details: Laser Scanning Forum Ltd
Company Position Title: Co-Founder
Country: UK
Skype Name: jason_warren
Linkedin Profile: No
Location: Retford, UK
Has thanked: 443 times
Been thanked: 246 times
Contact:

Re: Traversing with gls-2000

Post by Jason Warren »

landmeterbeuckx wrote:I wanted to test a site with a gls-2000 assuming it could traverse automaticaly.

Now i hear froom the dealer thet it's necessary to measure the points before where you want to place the scanner. I always assumed that you give a position for the first point and a backsight and that the instrument itself calculates the foresight where a prism is placed.

Can anyone confirm which method is to be used? If all the station points have to be known before measuring it is pretty useless (personal opinion).
The GLS2000 can backsight / foresight, and not sure if the latest firmware allows it to do resections, will try and find out...
Jason Warren
Co_Founder

Dedicated to 3D Laser Scanning
LaserScanningForum
User avatar
landmeterbeuckx
V.I.P Member
V.I.P Member
Posts: 1615
Joined: Tue May 01, 2012 5:19 pm
11
Full Name: Lieven Beuckx
Company Details: Studiebureau Beuckx
Company Position Title: Owner
Country: Belgium
Linkedin Profile: Yes
Has thanked: 183 times
Been thanked: 548 times

Re: Traversing with gls-2000

Post by landmeterbeuckx »

Jason,
So you can start with 2 points, traverse say 20 stations. Measure a few stations with total station for gnss coordinates, do an adjustement with surveying software and calculate the pointcloud.

The measured prisms can be extracted out of the scans with x, y and z values? This is absolutely necesarry in my search for a (possible) new scanner.
LSBbvba
Surveying services - 3D Laserscanning
Tel : +32477753126
www.lsbbvba.be
[email protected]
User avatar
Jason Warren
Administrator
Administrator
Posts: 4224
Joined: Thu Aug 16, 2007 9:21 am
16
Full Name: Jason Warren
Company Details: Laser Scanning Forum Ltd
Company Position Title: Co-Founder
Country: UK
Skype Name: jason_warren
Linkedin Profile: No
Location: Retford, UK
Has thanked: 443 times
Been thanked: 246 times
Contact:

Re: Traversing with gls-2000

Post by Jason Warren »

landmeterbeuckx wrote:Jason,
So you can start with 2 points, traverse say 20 stations. Measure a few stations with total station for gnss coordinates, do an adjustement with surveying software and calculate the pointcloud.
Yes.
landmeterbeuckx wrote:The measured prisms can be extracted out of the scans with x, y and z values? This is absolutely necesarry in my search for a (possible) new scanner.
Yes, I will PM you my colleague`s details. He has worked with the GLS2000 in depth... ;)
Jason Warren
Co_Founder

Dedicated to 3D Laser Scanning
LaserScanningForum
User avatar
landmeterbeuckx
V.I.P Member
V.I.P Member
Posts: 1615
Joined: Tue May 01, 2012 5:19 pm
11
Full Name: Lieven Beuckx
Company Details: Studiebureau Beuckx
Company Position Title: Owner
Country: Belgium
Linkedin Profile: Yes
Has thanked: 183 times
Been thanked: 548 times

Re: Traversing with gls-2000

Post by landmeterbeuckx »

excellent. Thanks Jason
LSBbvba
Surveying services - 3D Laserscanning
Tel : +32477753126
www.lsbbvba.be
[email protected]
Oatfedgoat
Honorary Member
Honorary Member
Posts: 1047
Joined: Mon Oct 06, 2008 8:31 pm
15
Full Name: Matthew McCarter
Company Details: Costain
Company Position Title: BIM Manager
Country: England
Linkedin Profile: Yes
Has thanked: 5 times
Been thanked: 4 times

Re: Traversing with gls-2000

Post by Oatfedgoat »

landmeterbeuckx wrote:
The measured prisms can be extracted out of the scans with x, y and z values? This is absolutely necesarry in my search for a (possible) new scanner.
The prisms need to be measured on site using the scanner as back sight or fore sight observations. It is NOT possible to extract the prisms (prisms aren't scanned, they are measured) from software back in the office.

Disclaimer: I no longer work for Topcon and I also have seen that new software was recently released for all their mass data products, so functionality may have changed.
jimcaintech
I have made 30-40 posts
I have made 30-40 posts
Posts: 31
Joined: Sun Sep 01, 2013 8:41 am
10
Full Name: Jim Main
Company Details: Caintech Ltd
Company Position Title: Director
Country: Scotland
Linkedin Profile: Yes

Re: Traversing with gls-2000

Post by jimcaintech »

Whilst Magnet Collage software is fantastic, you still need to measure the prisms whilst carrying out the scans. You can register by tie points, this is effectively the same as resection. It does take longer though.
Post Reply

Return to “Topcon”