针对全球定位系统( GPS) 的微弱信号跟踪容易失锁问题, 提出一种新的跟踪方法. 利用平方根卡尔曼滤波算法, 在运算过程中运用误差协方差矩阵的平方根形式进行迭代, 有效减小了舍入误差带来的影响. 提出了一种新的GPS 信号跟踪测量模型, 在连续积分的基础上, 加入了非连续积分过程, 通过有效处理, 避免了导航信息位翻转对信号相关运算产生的影响-Weak signal tracking for the Global Positioning System (GPS), easy to loss of lock problem, propose a new tracking method using the square root of the Kalman filter algorithm, iterating use during operations in the form of the square root of the error covariance matrix, effectively reduced impact of rounding error. proposed a new GPS signal tracking measurement model based on continuous integral non-continuous integration process, through effective treatment and avoid navigation information bit flip signal operator affect