I want to give a location (pix+radius, four corners or whatever) and a delivery schedule (once a week etc) This is the requirement. The timeline could be once

I want to give a location (pix+radius, four corners or whatever) and a delivery schedule (once a week etc) This is the requirement. The timeline could be once a week, once a month or once a .. - the point is not frequency but predictability. With Google Earth, Open Source, et al there is no predictability, that's why they are not answer for THIS potential customer.