一种基于机动目标跟踪预测理论的卫星定位接收机终端定时方法研究

研究了实现卫星定位接收机终端时间与卫星系统时间保持实时同步的一种异步数据融合方法。该方法将移动目标的一步外推预测与卫星系统终端时差相结合，根据已获取移动目标信息及平滑信息获得具有实时性的定时数据；进一步外推的估计数据。首先，通过双星定位系统双向链路获取定时定位信息，将双向测距数据及时问同步误差数据进行处理、保存；其次，以平滑信息的数据及该时刻获取数据为基础，建立状态向量的动态模型；最后，将计算结果与直接获取测距数据进行对比．通过计算机仿真验证获取结果的卖时性与精度。

Discuss of Time Synchronization for Satellite Location Receiver Based on Motorized Target Calculating and Tracking Theory

A data fusion method of realizing receiver and sender of satellite location system to keep the synchronization time are presented. This method combines the calculating of motorized target and satellite time differ, getting the time data and calculate data based on what have been got at passed and present. At first, synchronization information from the Tow_stay located system, disposes and saves the data of synchronization time and distance detacted. Secondly, motorized model based on the past time data and present data are builded. At last, the result between the method and the derected data is compared, then proved the precision of result by computer imitation.