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在超宽带相参接收系统中，正交解调的 Ｉ、 Ｑ 两路输出的幅度和相位的不一致性以及直流偏置分量会严重影响系统的性能。本文就超宽带信号的正交解调误差对信号处理的影响进行了分析，提出了一种幅相特性不一致的校正方法，并给出了计算机仿真的结果。
In ultra-wideband coherent receiving systems, the amplitude and phase misalignments of I and Q outputs of quadrature demodulation as well as the DC offset components can seriously affect the performance of the system. In this paper, the influence of quadrature demodulation error of ultra-wideband signal on signal processing is analyzed. A correction method with inconsistent amplitude and phase characteristics is proposed and the result of computer simulation is given.