This is always a strange one - the residents should be thankful that somebody is going to the trouble of checking their properties are safe, but they ...
In Photoscan you manually fine tune the positioning on each image of the target, the same I think in Pix4D. Once you have shown the software what each...
Richard, post: 412796, member: 833 wrote: I've never heard a louder Therwump in my life.The whole ground erupted and flung stuff everywhere.I once dro...
You'll be getting a very simplistic survey if you just accept what comes out of the software. Anything much more than a bare earth surface needs a lot...
On an open field of 40 acres you are probably correct.One reason would be safety, on sites such as landfills or quarries with a lot of heavy plant mov...
At 400 ft. such targets are quite clear - we typically get residuals of 1-3cm. on the targets we use use as check points: the rest are used as ground ...
It is a target - i placed it, fixed to a permanent peg.I wasn't suggesting that you should put down targets, wait for Google to fly it and then use th...
Shelby H. Griggs PLS, post: 412040, member: 335 wrote: Rough calculations place my 18AH LiFePO4 batteries at about 24 hour run time for my Leica GNSS ...
leegreen, post: 411751, member: 2332 wrote: I suggest using 36"x36" aerial targets in Iron Cross pattern, and mark it in 5 or 6 images,The only proble...
Why did I make it? Just in the habit of making anything needed I suppose - there's a cupboard full of special jigs and targets made as one offs, but w...
Just to clarify a few points on the UK coordinate system.Great Britain use a European derivative of WGS84 known as ETRS89. GB mapping is on a single T...
JH is correct - as long as you ensure that your software has given you the ground distance and not the projection distance - too often I see that the ...
Have you taken into consideration the height above sea level? The scale factor is correct only at sea level height and will need to be corrected to th...
We send our calibration TS away for a full independent calibration every 3 or 4 years.As soon as it comes back it goes on a local baseline we have whi...
March 1988 - Geodimeter 440 and December 1988 - Geodimeter 440-LRThey have both been out today for their yearly calibration on the baseline we use - b...
leegreen, post: 410492, member: 2332 wrote: I should have should you are reaching the limits of entry level drone mapping.With a high end drone (likel...
Have you done a three point check? Ideally you need three tripods, but with your facilities you could set up three 5/8" bolts to screw the tribrach an...
The system is designed to work with the RMT held square to the line of sight. In practice holding it vertical shouldn't make much difference unless yo...
Andy J, post: 407339, member: 44 wrote: I'm a longtime Geodimeter user, but am having trouble coming up with a solution for you. There is a reason th...