一种组合调制的脉冲超宽带测控信号  

A Combined Modulation IR-UWB TT&C Signal

作　　者：孟祥利[1] 侯孝民[1] 廉昕[1] 

机构地区：[1]解放军装备学院光电装备系,北京101416

出　　处：《电讯技术》2017年第3期282-287,共6页Telecommunication Engineering

摘　　要：将脉冲超宽带(IR-UWB)信号应用于航天测控领域,能够有效提高当前航天测控系统的隐蔽性、抗干扰性和测量性能,具有重要的现实意义。将DS-PAM(Direct Spread-Pulse Amplitude Modulation)调制、TH-PPM(Time Hopping-Pulse Position Modulation)调制的信号和PSM(Pulse Shape Modulation)调制技术组合起来,可构成一种新的组合调制的脉冲超宽带信号,即DS-PAM-TH-PPM-PSM-UWB(Direct Spread-Pulse Amplitude Modulation-Time Hopping-Pulse Position ModulationPulse Shape Modulation-Ultra Wideband)信号。利用对数正态阴影模型分析其传输性能,在单频干扰信号条件下分析其抗干扰性能,利用模糊函数分析其测量性能。仿真结果表明,相比于传统的DSPAM-UWB信号和TH-PPM-UWB信号,该组合信号具有良好的传输性能、抗干扰性能和测量性能,为脉冲超宽带信号应用于航天测控领域提供了更多的选择。Applying Impulse Radio-Ultra Wideband （ IR-UWB ） signal in space tracking, telemetry and command（ TT＆amp;C） system can effectively improve concealment,anti-interference performance and measure-ment performance of TT＆amp;C system. This paper intends to combine Direct Spread-Pulse Amplitude Modula-tion（DS-PAM）,time hopping-pulse position modulation（TH-PPM） signal and pulse shape modulation （ PSM） technique to constitute a new combination of pulse modulated ultra-wideband signal called DS-PAM-TH-PPM-PSM-UWB （ Direct Spread-Pulse Amplitude Modulation-Time Hopping-Pulse Position Modulation- Pulse Shape Modulation-Ultra Wideband ） signal . By using the lognormal shadowing path loss model,the transmission performance is analyzed. Its anti-interference performance is analyzed under single-frequency signal interference condition and its measurement performance is analyzed using ambigui-ty function. Simulation results show that the transmission performance,anti-jamming performance and per-formance measurement of the combined signal are improved compared with conventional DS-PAM-UWB signal and TH-PPM-UWB signal. Therefore more choices are provided for application of IR-UWB signal in TT＆amp;C field.

关 键 词：航天测控 脉冲超宽带信号 传输性能 抗干扰性能 测量性能 

分 类 号：TN914.2[电子电信—通信与信息系统]