基于动态内插技术的通用化测控信道模拟方法

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基于动态内插技术的通用化测控信道模拟方法

本发明提供一种基于动态内插技术的通用化测控信道模拟方法，其基本实施过程如下：步骤1：利用频率为f upL 的本振信号S upL0 (t)对地面站的发射信号S up (t)进行正交解调，得到复基带输入信号S upB (t)；步骤2：根据星地时间延时τ(t)，采用动态内插技术产生复基带输入信号S upB (t)的延时重构信号S uprB (t)；步骤3：在进行步骤2的同时，根据星地时间延时τ(t)，生成信号S upD (t)；步骤4：将S upD (t)正交调制到信号S * upL0 (t)，以得到本振信号的延时重构信号S upL1 (t)；步骤5：将复基带信号的延时重构信号S uprB (t)与本振信号的延时重构信号S upL1 (t)按照进行合成，得到最终的模拟输出信号S upr (t)。本发明可实现在信号体制、信号形式、信号参数等先验信息未知的情况下，精确模拟上、下行信道的动态传输效应。

General measurement and control channel simulation method based on dynamic interpolation technology

The invention provides a general measurement and control channel simulation method based on a dynamic interpolation technology. The basic implementation process of the general measurement and control channel simulation method comprises the steps that 1, intrinsic signals S_upL0(t) with the frequency being f_upL are used for conducting quadrature demodulation on emission signals S_up(t) of a ground station, and complex baseband input signals S_upB (t) are obtained; 2, delay reconstruction signals S_uprB(t) of the complex baseband input signals S_upB(t) are generated through the dynamic interpolation technology according to satellite-to-ground time delay tau(t); 3, while the step 2 is conducted, signals S_upD(t) are generated according to the satellite-to-ground time delay tau(t); 4, the S_upD(t) is 4 is subjected to quadrature modulation to signals S*_upL0(t) to obtain delay reconstruction signals S_upL1(t) of the intrinsic signals; and 5, the delay reconstruction signals S_uprB(t) of the complex baseband signals and the delay reconstruction signals S_upL1(t) of the intrinsic signals are synthetized according to a formula (please see the descriptions for the formula), and final simulation output signals S_upr(t) are obtained. According to the general measurement and control channel simulation method, the dynamic transmission effect of an uplink channel and a downlink channel can be precisely simulated without knowing apriori information such as signal systems, signal forms and signal parameters.