基于六端口技术的双频连续波雷达  

Dual-tone continuous wave radar based on six-port technology

作　　者：丁瑶[1] 刘发林[1] 朱志臻[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,合肥230027

出　　处：《中国科学院研究生院学报》2010年第4期499-506,共8页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：安徽省自然科学基金(070412036)资助

摘　　要：提出了一种基于六端口技术的双频连续波雷达.该雷达利用六端口电路代替混频器,获取回波信号与发射信号间的相位差及多普勒频差,从而实现距离和速度测量.此外,还分析了噪声的传递特性,并提出了有效的抗噪声的方法,实现了比传统雷达更高的测量精度.仿真结果表明这种雷达测量过程简单,测量精度高.A novel dual-tone CW radar is proposed.Six-port circuit is used as a mixer to obtain the phase difference and Doppler frequency difference between the received and transmitted signals,and then the range and relative velocity of the target can be calculated.An anti-noise method is also proposed according to the measurement process and noise transfer principle.Simulation results show that this proposed radar has a higher accuracy with a simpler measure procedure.

关 键 词：六端口技术 双频连续波雷达 多普勒频率 反射系数 最小二乘估计 

分 类 号：TN958.94[电子电信—信号与信息处理]