Research On The Location Of Take-off And Landing Points And Emergency Dispatch Under Low-altitude Rescue

In the construction of emergency rescue system,safety,efficiency and cost of rescue are important evaluation indexes.Air rescue is quick,but it is heavily influenced by the environment,while ground vehicle rescue has a better ability to adapt to the environment,but the rescue efficiency is poor.On the basis of considering the rescue environment,combining the two effectively,selecting the location of the facility points in the target rescue area and planning the dispatching scheme,and taking advantages of each,can ensure the safety of the rescue,improve the rescue efficiency and reduce the rescue cost.Firstly,according to relevant navigation regulations,this paper established terrain and meteorological constraint model and radar blind spot model of helicopter taking off and landing,put forward the optimization method of helicopter taking off and landing site,and completed the simulation of aircraft flight airspace;Then,the transfer points were selected by the above optimization method of landing site selection,and the properties of each facility points were defined,then,based on the connection mode of each facility point,four rescue modes were proposed,a twostage site selection model under aircraft performance constraints was established for the target rescue area,A* algorithm was designed to solve the model,and an example was designed to simulate the proposed model,which verified the superiority of the rescue method of air-ground transportation;Finally,considering the performance difference of aircraft in the process of aviation dispatching,a cooperative emergency dispatching model for air space was established,and based on the above site selection results and the simulation results of aircraft flight airspace,A* algorithm was designed to solve the cooperative scheduling problem,and the scheduling scheme of material transportation and casualty transportation was obtained,and the results of the model were compared and analyzed.The results show that the air-ground combined emergency dispatching model proposed in this paper can greatly reduce the rescue cost and rescue time and improve the rescue efficiency.