Abstract: With the gradual development of unmanned aerial vehicle and the expansion of its airspace range, the air space is becoming more and more limited. Integrating UAV systems into the controlled airspace will be one of the most necessary ways to solve the air space congestion problem. Based on the performance of the unmanned aerial vehicle and the requirements of the onboard equipment and facilities, combined with the delay of manned aircraft and UAV, the collision interval between them can be deduced. According to the principle of equivalent safety level, the target safety level between them can be obtained. A lateral collision risk model between UAV and manned aircraft based on the Reich model is developed. Then according to simulation examples, we assess the collision risk between UAV and manned aircraft in different controlled areas, calculate the collision risk, and compare it with the value of target safety level. The simulation results show that the deduced anti-collision separation used in controlled areas above 1000 meters meets the demand of ICAO, so it is usable in the controlled area.

Key words: airspace, Unmanned Aerial Vehicle(UAV), Reich model, collision risk