Recent content by Darcy

What model of drone did you use for this? I'd say the image detail is lots good enough for our application. But, like you say, it's off a bit, so any distance or area measurements may be skewed because of that.

Thanks for the feedback! Yes, that's great advice to use longer distances for verification measurements. We might have to invest in a Leica Distance Measurer for taking those.

Thanks for all the good advice shared on this topic. I’ve learned quite a bit, since I’m totally new to this field of drone mapping. The process that’s forming in my mind for our application goes like this: 1. We’ll lay out several physical targets of a known size on each site before flying...

Can an orthomap with only relative accuracy, no defined global accuracy, be imported & manipulated in GIS software? I have not used any GIS software, so I have no experience in this regard.

Earthman, could you elaborate on this, please? You're saying an orthophoto is not the same as an aerial map showing surface features? I thought that's what an orthophoto is. But, I've never had the opportunity to create an orthophoto, so maybe I'm not understanding what their final product is.

This is a very valid point and is the main reason why we'd like to use drone mapping. I don't know if there is a standard interval for how often any one particular area is updated on Google Earth, but it usually seems to be several years at least.

An important difference between our application and yours is that we'll be visiting a site rarely more than once, and they're not necessarily new construction sites that have recently surveyed GCPs. I'll have to research Aeropoints more to determine how that would work for us. R.Perry, do you...

Are you using GCPs? If yes, what GPS equipment are you using to determine their location? If not using GCPs, are you getting that 4-8" accuracy with the drone's onboard GPS alone?

I'm new to this forum, and I'm posting this in the hopes of getting some valuable feedback. As a landscaping company, we’re wanting to start using a drone to measure sites for estimating purposes. We’d like to maintain an accuracy of at least 6”. I’ve heard someone suggest laying an object of...