信号产生器是雷达发射机中的关键部件。针对线性调频信号产生器，文中分析了系统的幅相误差来源以及误差对产生信号质量的影响，并建立了系统的幅相误差模型；在此基础上，分别提出了相应的幅度和相位校正措施，给出了具体的校正实现结构。仿真实验结果表明：提出的系统幅相校正方法能够有效地补偿引入的幅度和相位误差。

Signal generator is one of the key components in radar transmitter.In this paper the possible sources and the influences of the amplitude and phase errors are analyzed in the linear frequency modulated(LFM) signal generator system,respectively.The model of the amplitude and phase errors of system is constructed.At the same time based on the errors analyzed,the calibration measures of the amplitude and phase is proposed,respectively,particular realization structures are given.The simulation and experiment results show that the amplitude and phase errors can be compensated effectively by means of the proposed method.

TN830.3