【摘要】 针对局域增强系统(LAAS)中导航定位精度问题,提出了一种新的基于模糊控制的载波平滑码(CSC)算法。该算法将载体的运动速度或者导航卫星的几何精度因子(GDOP)划分成不同的值域,当GPS信号出现周跳时,根据速度所在值域,利用模糊控制理论调节GPS信号的载波和码的加权值。可以使导航定位精度平滑,并使定位参差降低一半。给出了应用该方法的具体步骤,并通过静态试验证明了该算法的有效性。更多还原

【Abstract】 To enhance the accuracy of navigation and positioning in LASS, algorithm divides the speed of carrier or GDOP of navigation satellites into different domains. Fuzzy control theory is utilized to adjust the weights of carrier and code of GPS signal according to the domain of speed when the GPS signal slips. In this way the accuracy of navigation and positioning is improved and the residual is reduced by half, Some particular steps for the application of the algorithm are offered and the effectiveness is proved with the stateie test.更多还原