文中针对GPS/SINS组合导航系统中GPS信号失锁问题进行研究,采用基于神经网络的组合导航算法。在GPS信号失锁时间段内,用神经网络模拟GPS的信息,进行信息融合。文中给出了基于神经网络的组合导航系统模型,并进行了数学仿真研究,结果表明,引入了神经网络的组合导航系统,在GPS信号失锁时,能保证一定的导航精度。本文为组合导航系统中GPS信号失锁问题的解决提供了一种方法。

The paper is researched in the problem of GPS information lost in the GPS/SINS integrated navigation system, used the algorithm with neural network. During the outage of GPS, the information of GPS is simulated by the neural network, to supply the measured value to the system and the coupled navigation calculated is going on. The model of integrated navigation system with neural network is given in the paper. The simulation results show that the integrated system with the neural net could insure the precision even the GPS signal lost. The method mentioned in the paper offers a way of solving the problem of GPS signal lost in the integrated navigation system.