新型软硬件结合式相位干涉仪  

New Phase Interferometer Combining Hardware and Software Technology

作　　者：孟真[1] 阎跃鹏[1] 

机构地区：[1]中国科学院微电子研究所,北京100029

出　　处：《微电子学与计算机》2011年第2期132-135,共4页Microelectronics & Computer

基　　金：国家"八六三"计划项目(2009AA12Z314)

摘　　要：提出了一种新型软硬件结合式结构的相位干涉仪.采用射频相位差测量器件AD8302在AD对等效电压信号采样后,采用卡尔曼滤波对等效电压信号进行优化估计、转化为相位差信息,求出目标辐射源的方向角.处理结果显示测量误差降低为AD8302直接输出的1/10左右.This paper presents a new phase interferometer system combining hardware and software technology to solve the problem.AD8302 is used to measure the phase difference directly instead of the down converter,and to export the equivalent voltage signal of the phase difference.After the equivalent voltage signal is sampled,the Kalman Filter is used to optimize the Voltage signal.Finally,the voltage signal is translated into the phase difference communication which can be used to calculate the location of the target.The calculation result shows that the phase difference measurement error reduces to only about 1/10 after using the Kalman filter.

关 键 词：相位干涉仪 AD8302 卡尔曼滤波 

分 类 号：TN8[电子电信—信息与通信工程]