全球定位系统2016，Vol.41Issue(4)：12-16,5.DOI:10.13442/j.gnss.1008-9268.2016.04.003
利用曲线拟合改善压控衰减器精度的方法
The Method of Applying the Curve Fitting to Improve the Accuracy of Voltage Variable Attenuators
摘要
Abstract
In satellite navigation signal simulators , digital attenuators cannot reach a high accuracy of power control .Replacing digital attenuators by voltage variable attenua‐tors ,a method for improving the accuracy of voltage variable attenuators with curve fitting based on moving least squares is proposed .By establishing the relationship between the in‐puts and outputs ,the accuracy of the voltage variable attenuator can be improved using the precise control word derived from expected attenuation .Experiment results demonstrate that the maximum error of attenuation is 0.1dB ,w hich decreases by 80% compared to digital at‐tenuators .关键词
移动最小二乘法/压控衰减器/曲线拟合/精度改善Key words
Moving least squares/voltage variable attenuator/curve fitting/accuracy improvement分类
信息技术与安全科学引用本文复制引用
汤先鹏,李柏渝,陈雷,吴礼杰,欧钢..利用曲线拟合改善压控衰减器精度的方法[J].全球定位系统,2016,41(4):12-16,5.基金项目
青年科学基金资助项目 （）
