基于PXI总线的MLS模拟器扫描角度精确测量

利用PXI总线检测技术实现MLS模拟器扫描角度的精确测量.重点对模拟器中频数字化之后的信号进行内插、滤波等处理,以提高扫描波束信号的时间分辨率和减小线性化引起的定时误差.提出了采用多基准电平的扫描角度测量方法,利用加权取平均的方法来平滑干扰噪声对定时精度的影响,并给出了加权系数的具体选取步骤.实验结果表明,内插和滤波可以减小线性化引起的扫描角度计算误差,采用多基准电平的方法可以有效克服干扰噪声对扫描角度测量的影响.

Precise Measurement of the MLS Simulator' s Scan Angle Based on PXI

The PXI technology is used to measure the MLS simulator's scanning angle precisely.After the digitalization of the intermediate frequency(IF) signal,MLS simulator's output signal is interpolated,filtered,etc.,so the time distinguishing ability of the scanning beam can be improved and the fiducial level's timing error caused by linearization can be reduced.The multiple-fiducial level(MFL) algorithm is proposed to be used in the measurement of the scanning angle,the precision is improved in whole by weighting...