分布式POS时间同步算法及软件设计

Design of time synchronous algorithm and software for airborne distributed POS

分布式POS是一种基于惯性/卫星组合技术的柔性基线多节点高精度时空测量系统,是多任务航空遥感载荷高精度成像的关键装置。为了实现分布式POS系统高精度数据融合,该文设计了分布式POS数据采集以及数据融合的时间同步算法,设计分布式POS传递对准算法,编写分布式POS数据处理电路软件,并对算法进行车载实验验证。实验结果表明,分布式POS时间同步算法实现了分布式POS各节点位置、速度、姿态信息的高精度测量。

The distributed POS is a flexible baseline multi-node high-precision measurement system based on SINS/GPS integrated navigation technique. It is a key high-accurate imaging device for multitask airborne loading remote sensors. For highprecision data fusion of the airborne distributed POS,a time synchronization algorithm for data acquisition and data fusion of the distributed POS is proposed in this paper. A transfer alignment algorithm was designed. The software of data processing circuit for the distributed POS was compiled. The vehicle-mounted experiment was carried out to validate the algorithm. The experiment results show that the proposed time synchronization algorithm realized the high-precision measurement of multi-mode＇s position,velocity and attitude for distributed POS.