Design And Implementation Of Tower Montoring System Based On ADS-B

Into the 21 st century,China’s civil aviation has been rapid development of air transport,China’s air traffic control in 2015 to protect the landing more than 7.8 million sorties,equivalent to the air traffic control system,the average daily command of more than 10,000 flights in China’s airport to achieve security Take off and land.And in recent years with the development of UAV technology and China’s low-altitude airspace has been open,the various areas of society on the use of UAV is also increasing.In order to ensure the safety of air flight,so that some people and unmanned aerial vehicles can be co-flying in non-isolated airspace,China began to Automatic Dependent Surveillance-Broadcast(ADS-B)technology related to the application and promotion.Based on the actual needs of China’s aviation field and the technical characteristics of ADS-B,this paper designs and implements a monitoring system for aircraft loaded with ADS-B.The surveillance system will provide uniform monitoring of airplanes with ADS-B equipment,not only improving the efficiency of air traffic control and ensuring flight safety for airborne flights.The main work of this paper is as follows:⑴ Depth analysis and study of ADS-B related technologies,the performance advantages of ADS-B are expounded from the aspects of ADS-B technology principle,service and technical characteristics.And a detailed introduction to the ADS-B in foreign applications and achievements,clear the ADS-B technology research significance.⑵ Analysis the data format of ADS-B,and introducing the ADS-B data structure of the data items and their analytical methods.Finally completed the ADS-B data analysis module implementation,for the realization of the tower monitoring system to provide data support.⑶ Complete the design and implementation of the tower monitoring system,The functions include: chart interface display,flight situation information display,flight plan management,airport weather information display,aircraft historical situation and flight trajectory display,aircraft alarm calculation and display,map layer rendering and other functions.⑷ According to the functional requirements of the system,Analysis and design of the aircraft position estimation algorithm,the aircraft history trajectory smoothing algorithm,the aircraft collision selection algorithm and the aircraft intrusion detection algorithm.To ensure continuous display of the aircraft position,the smooth history of the aircraft track display,real-time aircraft collision alarm display and real-time aircraft intrusion alarm display.And improve the original aircraft ranging algorithm,to achieve a consideration of the Earth’s curvature and aircraft flight height of the ranging algorithm to improve the accuracy of the distance between aircraft.