Calculational methods of avoiding flight conflict in low altitude airspace

According to the flight separation regulations of air traffic management rules and the analysis method of airspeed vector triangle, the basic condition to avoid conflict between aircrafts in low altitude airspace was studied, the airspeed vector relationship of aircraft A and B was revealed, the calculation model of changing velocity and heading angle was obtained, and two kinds of methods to avoid flight conflict were put forward.The calculation model was approved by experiments on DRS-98 radar simulator.It is concluded that the conflict can be avoided by changing heading angle in any time, the more the distance and heading difference between the aircrafts are, the less the heading angle change is.When the distance between aircrafts is more than 6 times fligh separation, changing velocity method should be used, and the aircrafts can keep their scheduled flight courses.