本振相位噪声对干涉式综合孔径辐射计性能的影响

Local Oscillator Phase Noise and Its Effect on Aperture Synthesis Interferometer Performance

从两路接收信号的相关系数方面分析相位噪声对毫米波综合孔径辐射计的影响。利用非线性方法对本振信号的相位噪声建立的模型进行仿真。研究了在相关系数幅度和相位不同的允许误差范围内对本振相位噪声的指标要求。

The effect of the phase noise of the local oscillator on the performance of millimeter-wave aperture synthesis radiometer is studied in this paper in terms of the correlation coefficient of two receiver signals. The phase noise of LO is modeled using a nonlinear equation, which describes the timming jitter effect of the LO. Simulations has been done for different error levels of the amplitude and angle of the correlation coefficients, in order to qualify the requirements on the LO phase noise level.