伪码均匀性对信号功率测量的影响

在扩频体制导航信号模拟源功率测量中,出现了长周期伪随机码调制信号的功率测量值波动范围明显大于短周期伪随机码调制信号功率测量值的现象。针对这一现象,该文从理论上分析了测量值产生波动的原因,并通过实验进行了验证,得出了伪随机码在测量时段内的码均匀性影响信号功率测量准确度的结论,提出了规避或降低由码均匀性引起测量误差的解决措施。

Research on Effect of Pseudo-code Homogeneity on Signal Power Measurement

In the power measurement of navigation signal simulator in spread spectrum,the fluctuation rang of power measurement value of long-period pseudo-code modulation signal is significantly more than that of short-period pseudo-code modulating signal.In view of this question,this paper analyzes the reason of fluctuation Abstractly.The experiment result indicates that the homogeneity of long-period pseudo-code brings effect upon the measurement result accuracy.Finally,this paper proposes the solutions to avoid or reduce the measurement errors caused by homogeneity of pseudo-code.