摘要
应答着陆系统(Transponder Landing System,TLS)是一种基于应答机的精密进近着陆引导系统,采用相位干涉仪测角原理获得飞机的方位和仰角信息。从应答着陆系统的基本测角原理入手,分析了该系统的测角精度和误差来源。重点分析了因接收通道不平衡和多基线干涉仪测角的相位模糊引起的相位误差,并针对各自的特点提出了消除接收通道失衡和噪扰条件下解相位模糊的办法。通过计算机仿真验证了理论分析的正确性。
Transponder landing system is a transponder-based precise approach landing system.It adopts phase interferometer principle to obtain the azimuth and elevation information.This paper introduces the basic principle of angle measurement,analyzes the accuracy and error source about the angle measurement of this system.The phase error caused by the receiving channel unbalance and the phase ambiguity of multi-baseline interferometer is analyzed especially.Aiming to each characteristic,this paper puts forward the method to solve the receiving channel unbalance and the phase ambiguity under the condition of noise.The correctness of the theory analysis was demonstrated by computer simulation.
出处
《无线电工程》
2011年第10期30-32,36,共4页
Radio Engineering
基金
应答着陆系统需求论证及关键技术分析(DG100107)
关键词
应答着陆系统
相位干涉仪
误差分析
通道失衡
相位模糊
transponder landing system
phase interferometer
error analysis
channel unbalance
phase ambiguity
