The Comprehensive Evaluation Method for The Visibility Ability of ATCT Based on BP Network

Airport Traffic Control Tower (ATCT) is one of the most important facilities at civil aviation airports. The location and height of ATCT will directly affect the controller's observation and judgment. In order to evaluate and compare the visibility capability of different tower construction schemes, a comprehensive evaluation method is set up. This method includes building an index system of obligatory and preference indicators, forming calculation methods for each indicator, and establishing a comprehensive evaluation model. In the evaluation model, two networks have been constructed based on Coefficient Strategy (CS) and Level Strategy (LS) respectively. Selecting a certain airport in East China as a case study, CS-BP and LS-BP network models of 5-10-1 in topology have been set up after 12000 typical samples for training respectively. The research results show that LS-BP network has the smaller Mean Squared Error (MSE) and greater regression coefficient compared to CS-BP network. And the results of CS-BP were similar to Traditional Strategy (TS). Therefore, selecting LS-BP network to evaluate calculated indicators of given schemes and considering that scheme 3 was best. The entire method can serve as a reference for decision-making by air traffic control unit.