DJI Phantom 4 Advanced

This drone was released in the spring of 2017. At the time of the writing it is the most advanced quad copter in its class. It has GPS position hold, a low distortion camera, free advanced autopilot options, indoor position hold, obstacle avoidance (note the two cameras in the front), 30-minute flight time (very high for a quad copter), and top speed of about 45 mph. At $1,200 (currently), it provides adequate imagery for many smaller surveys. It will map about 160 acres in one flight. Factors which determine the number of acres are wind, flight speed, photo overlap, altitude, ground resolution, battery age, and more. To understand better what the deliverable is from this drone it is necessary to understand the software which controls its flight path and performs data processing.