【摘要】 以车比雪夫大数定律为基础 ,研究基于捷联惯导系统 (SINS)的全球卫星定位系统 (GPS)完善性监测方法 .采用一个卡尔曼滤波器滤波 ,对卫星伪距故障幅值进行估计并判断哪颗卫星出现故障 .最后给出了卫星出现阶跃故障的仿真实例 .仿真结果表明 ,该方法能够及时准确地检测出GPS信号故障 ,计算量较低 ,适合于工程上应用更多还原

【Abstract】 A new approach of GPS integrity based on SINS is studied by means of the Chebyshevs law of great numbers. The magnitude of pseudoranges can be estimated and that which satellite is in trouble can be determined by using only a Kalman filter. A example is given in the case of step type pseudorange error. The simulation result proves that the new approach is very practical and efficient and the computation load is lower.更多还原