midterm 1 extra credit: a farmer is purchasing an auto steer system for a tractor. the farmer is confused on the different correction sources that trimble offers. the auto steer system is going to cost $7,500. with this purchase the system will be able to use waas for free. the farmer would like to know more about each system. please describe each of the following bullet points for each correction source. • dgps signal delivery: how the dgps signal is delivered to the gps receiver. both in terms of the location of base stations as well as how the correction information is transmitted from the base station to dgps receiver. • dgps pass to pass accuracy: the overall pass to pass accuracy of the dgps correction solution. (please use trimble and omni-star site to help find this information) • satellite compatibility: dgps signal compatibility with gps and glonass satellites. • cost: find the cost per year for omni star xp and centerpoint rtx