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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。然而,外部扰动及节点间的柔性连接使得分布式POS不能采用传统解析粗对准方法进行高精度初始对准。为实现分布式POS系统在外部扰动下获得高精度初始姿态,提出了基于惯性系双积分的抗干扰对准方法,通过双积分去噪原理极大降低外部扰动影响,最后对算法进行了三轴转台实验和飞行实验验证。实验结果表明,该方法能够有效隔离载体的动态干扰,实现了分布式POS各节点初始姿态信息的高精度测量。
Distributed POS is a flexible baseline multi-node high-precision space-time measurement system based on inertial / satellite combination technology and is the key device for high-precision imaging of multi-tasking aviation remote sensing load. However, the external disturbance and the flexible connection between nodes make the distributed POS unable to use the traditional analytical coarse alignment method for high-precision initial alignment. In order to realize high precision initial pose of distributed POS system under external disturbance, an anti-jamming alignment method based on double integral of inertial system is proposed. By using the principle of double integral de-noising, the influence of external disturbance is greatly reduced. Finally, Turntable experiment and flight experiment verification. The experimental results show that this method can effectively isolate the dynamic disturbance of the carrier and realize the high precision measurement of the initial attitude information of distributed nodes.