A Novel Generalized Simulation Technology of Aerospace TT&C Channel  

作　　者：ZHOU Yang ZHENG Zhe WU Siliang 

机构地区：[1]School of Information and Electronics,Beijing Institute of Technology

出　　处：《Chinese Journal of Electronics》2014年第1期204-208,共5页电子学报（英文版）

基　　金：supported by the Foundation of Shanghai Aerospace Science and Technology(No.20120541088)

摘　　要：A novel generalized simulation method is proposed to simulate the dynamic transmission delay of wideband and arbitrary signal in aerospace Tracking,telemetry and command(TT&C) channel. This method orthogonally demodulates the wideband and arbitrary Radio-frequency(RF) signal into complex baseband by a Local oscillator(LO) signal. Then the method of dynamic interpolation and delay reconstruction is proposed to obtain the delay reconstruction signal of complex baseband signal based on the variation rules of satellite-to-earth location. Meanwhile, the method of satellite-to-earth distance subsection and polynomial fitting is applied to obtain the delay reconstruction signal of LO signal. The simulated output signal is achieved through the synthesis of two delay reconstruction signals mentioned above. The proposed method can accurately simulate the variation characteristics of time delay and Doppler when wideband and arbitrary RF signal transmits in channel, without knowing any priori knowledge, such as signal form, signal parameters,and so on.A novel generalized simulation method is proposed to simulate the dynamic transmission delay of wideband and arbitrary signal in aerospace Tracking, telemetry and command （TT＆C） channel. This method orthogonally demodulates the wideband and arbitrary Radio-frequency （RF） signal into complex baseband by a Local oscillator （LO） signal. Then the method of dynamic interpolation and delay reconstruction is proposed to ob- tain the delay reconstruction signal of complex baseband signal based on the variation rules of satellite-to-earth loca- tion. Meanwhile, the method of satellite-to-earth distance subsection and polynomial fitting is applied to obtain the delay reconstruction signal of LO signal. The simulated output signal is achieved through the synthesis of two de- lay reconstruction signals mentioned above. The proposed method can accurately simulate the variation characteris- tics of time delay and Doppler when wideband and arbi- trary RF signal transmits in channel, without knowing any priori knowledge, such as signal form, signal parameters, and so on.

关 键 词：GENERALIZATION Simulation High pre-cision dynamic interpolation and delay reconstruction Satellite-to-earth distance subsection and polynomial fit-ting. 

分 类 号：V411.8[航空宇航科学与技术—航空宇航推进理论与工程]