【摘要】 基于溅散板型抛物面天线产生的已知参考信号 ,介绍了一种通过对FM/CW近程雷达回波中频信号进行二次采样抑制VCO扫频非线性的技术。给出了天线设计特点以及这种方法的基本原理和注意事项。此外 ,在暗室内进行的模拟实验表明 ,这种方法设计合理 ,可行有效 ,大大抑制了扫频非线性引起的一维成像频谱展宽和偏移现象更多还原

【Abstract】 A new technique to suppress the VCO nonlinearity by resampling the measured IF s ignal in short range frequency modulated continuous wave (FM/CW) radar based on a known reflecting reference is presented, which caused intentionally by a spec ially fabricated splash plate paraboloidal antenna. The basic principle and spe cial attentions are given in following discussion. Moreover, a confirmed experim ent in microwave non reflective chamber is simulated. The result shows the feas ibility of our self made antenna and the result is satisfactorily.更多还原