Comprehensive evaluation for airspace classification

The purpose of airspace classification is to ensure the safely, orderly and efficiently use of the airspace. and to satisfy different airspace user´s demand and configure air traffic control resource optimization. Based on disadvantage of airspace classification in use, the article first studied key factors to be considered in the future and put forward a kind of airspace classification criterion according to Chinese situation; secondly feature reduction method of rough set was adopted to confirm decision factors and necessary factors; finally the article illuminated comprehensive evaluation process of airspace classification project by giving an example of Nanjing Lukou airport airspace adopting technology of forecast and appraisement of communication system, navigation system and surveillance system. The study is expected to have referential values for the improvement of airspace resource use efficiency and to ensure aeronautical industry´s sound development.