Spaying accuracy is one of the most important reasons that the fully automatic drones are not widely used in the pesticide spraying application. The accuracy is mainly constraint by the GPS positioning accuracy.
But what about using DGPS (not mean SBAS) in this application? It may cost around 10000 USD but I guess most of the users may be able to afford it. And fully automatic drone with DGPS will be able to spray pesticide more accurately than manually controlled drone.
Why DGPS is still not widely used in this area? What are the reasons?