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随着通信和雷达的发展,脉冲信号的相位噪声成了影响整个系统性能的重要因素之一,采用传统模拟相位检波法测量脉冲信号相位噪声是一个非常大的挑战,因为这样的测试系统非常复杂,并且在测量相位噪声之前需要非常繁琐的校准程序,先进的正交数字相位解调和幅度解调技术能很好地解决这个问题。采用正交数字相位解调和幅度解调技术的系统不需要相位检波器和复杂的校准程序,利用极低噪声的参考源和互相关技术,提高了系统动态范围和测量灵敏度,实现了一键式精密测量脉冲相位噪声和调幅噪声。
With the development of communication and radar, the phase noise of the pulse signal has become one of the important factors that affect the overall system performance. It is a very big challenge to measure the phase noise of the pulse signal by the traditional analog phase detection method, because such a test system is very complicated , And requires very tedious calibration procedures before measuring phase noise. Advanced quadrature phase demodulation and amplitude demodulation techniques are a good solution to this problem. The system using orthogonal digital phase demodulation and amplitude demodulation technology does not require a phase detector and a complex calibration procedure. The system uses a very low noise reference source and cross-correlation technique to improve the system dynamic range and measurement sensitivity and achieve a key Accurate measurement of pulse phase noise and amplitude modulation noise.