利用二次采样技术进行扫频测量非线性抑制  

Suppression of Sweeping Nonlinearity Based on Resampling Technique

作　　者：景永奇[1] 何国瑜[1] 许鼎[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《微波学报》2003年第4期92-95,共4页Journal of Microwaves

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 。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.

关 键 词：二次采样 溅散板型抛物面天线 扫频非线性 VCO 近程雷达 

分 类 号：TN823[电子电信—信息与通信工程]