Going to do my first drone projects. Not my drone but an associate's. Both of us sort of new to it. Will be processed by DroneDepoy.
First project is a gravel county road just over a mile long. Need to do new road design, utility planning, etc. Thinking maybe fly about 200 feet high. What spacing should control targets be placed? Planning on using 12 inch diameter, white plastic bucket lids to mark control points/panels. Would stake them down with a 3/8 inch spike and 2 inch diameter fender washer painted black in center of lid. Is this good enough to mark the control point? Each will be shot with a long RTK shot, at least two times.
Second site is about a 20 acre reservoir site. Need contours. What control point spacing would work here?
Third site is a 5 acre future industrial lot.
Fourth site is a twenty acre subdivision being planned.
Any hints, recommendations would be helpful, such as how high to fly and control point spacing.
Do surveyors have a rule like engineers not to practice in areas you are not competent?
Before I offered any drones services, I have a handful of "practice" site completed so I knew the process before offering the service.
Some missing info... if you are using typical p4p, I would drop the height to around 120. Don't allow gaps in a 900 to 1000' complete overlap target to target. On the corridor portion I do targets left side, both sides, right side, both sides, etc., starting and ending with doubles. That will take about an gour longer on this job that the standard 1000' left, right, left. It will tighten your work up and avoid return trips.
For targets i paint a checkerboard of blue and white using a large piece of cardboard for a template. 60d nail or mag hub in the center and i now have site control for construction. I always fly well beyond the required corridor so my control survives. It keeps the distortion on the published surface low and provides a context ortho for nearby design considerations. Again, the added time and expense is extremely cheap insurance...
I'd suggest reading the fine print at Drone Deploy. Last I read, they reserve the right to redistribute your photos. My clients would not appreciate that.
Lots of other things to consider.
After some trial and lot's of errors, you will get it figured out. To prevent error you may want to consult someone with more experience.
A drone with only 12mp camera is likely not to have a 1" sensor, and a mechanical shutter. The P4Pro and P4Pro 2.0 have a 20mp camera with a mechanical shutter.
The free 30 day trial of Drone Deploy does not accept Ground Control points.
Looks like you may be on track for failure.