A MODEL SIMULATION OF ADAPTIVE FILTERS APPLIED IN MODES DATA LINK
The key function of a Mode-S transponder is , upon receiving an Uplink Format (UF) interrogation, to generate the corresponding Downlink Format (DF) reply, and the Acquisition or Extended Squitter (AS or ES) spontaneously. Especially the Extended Squitter ensures the flight safety of the aircraft. According to the principle of DO-260A, adaptive filter should be used to deal with the GPS information in Extended Squitter, for filtering the observation noise. A new kind of adaptive filter based on α-β-γ algorithm is proposed in this paper. Compared to the traditional Kalman filter, the new filter reduces amount of computation, with almost not deterioration in performances. Meanwhile using Look up Table according to current SNR to determine a, p and y ensures the fast convergence of this algorithm. The effectiveness when using the new filter in target tracking, is demonstrated by a number of flight tests.
Mode-S transmission Adaptive filter Trace filtering and target tracking
Z.Fang C.Gong
National Key Laboratory of Science and Technology on Avionics Integration Technologies CARERJ(China National Aeronautical Radio Electronics Research Institute) Shang Hai, China
国际会议
2012 International Conference on System Simulation(2012年国际系统仿真学术会议)
上海
英文
312-315
2012-04-06（万方平台首次上网日期，不代表论文的发表时间）