原子钟辅助GPS定位的研究  

Study of atom clock aiding GPS positioning

作　　者：杨川[1] 王永生[1] 史利剑[1] 

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《全球定位系统》2005年第4期5-8,11,共5页Gnss World of China

摘　　要：铷钟可以用来预测接收机的时钟偏差,通过对时钟偏差估计的改善就可以提高定位的精度,特别是可以改善垂直精度。由于铷钟的漂移非常缓慢,基于自适应低通滤波器,设计了一种导航算法用于铷钟约束的GPS。通过一个例子对所提出的算法进行的验证。Since the Rubidium clock makes it possible to predict the receiver clock offset, positioning accuracy could be enhanced through an improvement in clock offset estimation, and Rubidium clock aid4ng will definitely improve the vertical accuracy. Since the Rubidium clock drifts very slowly, an alternative navigation algorithm was designed for Rubidium clock constrained GPS using the adaptive low-pass filter. The implementation aspects of the method is also discussed along with a numerical example to validate the proposed method.

关 键 词：GPS 铷钟 自适应滤波 算法 定位精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]