应答着陆系统测角误差分析  

Analysis on Transponder Landing System Angle Measurement Error

作　　者：杨益欢[1] 赵修斌[1] 张建安[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

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)

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.

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 

分 类 号：TN914.43[电子电信—通信与信息系统]