I need to lay out a set of 10 points on the ground and measure their location as accurately as possible using GPS for an aerial survey.

I am aware that survey grade equipment can be expensive and complex... but does anyone know much about surveying?

What is the simplest way to do this? At this stage I would like +-50cm but appreciate that with accuracy comes cost....

[Edited on 21/2/17 by theduck]

My understanding is gps cannot give better than 5 m resolution,.

Whilst its true that a single GPS unit can't be that accurate there are ways and technologies to get it down to 1-2cm.

What I lack is the hardware and the knowledge to use said hardware so was after some advice.

[Edited on 21/2/17 by tegwin]

Leica Gs25 accuracy is currently 3mm !

Might be worth speaking to https://www.sccssurvey.co.uk/

They should be able to point you in the right direction.

Roger

Wow thats amazibg.... so ignore my comment, guerss you learn something everyday.

Normal single point GPS works to 5m. Sub-5m requires multiple base-stations and differential measurement from them.

I am sure the people that own the GPS brag about it being more accurate than 5M, wouldn't want the US military chucking a Tomahawk through the wrong Jihadi's window, would we ?

They're not GPS driven when in close range of the target IIRC, they're generally laser designated if they need more accuracy. 5m is less than the length of a normal estate car.

Some nice info here:
https://www.ordnancesurvey.co.uk/business-and-government/help-and-support/navigation-technology/gps-beginners-guide.html


[Edited on 21/2/17 by coyoteboy]