测量船船摇前馈数据处理方法研究及应用

船摇前馈是航天测量船稳定性设计方法之一。实践证明,船摇前馈对改善系统误差有益,目标速度前馈特别是加速度前馈的改善效果要比船摇前馈的好。分析原因,一方面是目标相对船摇来说变化慢,低频分量多,滤波后能够比较准确地得到所要的值,前馈精度也就高;另一方面是船摇前馈值特别是加速度前馈比较难以准确获得。因此,准确地计算前馈量,是补偿测量设备伺服系统滞后造成的误差,达到高精度地跟踪目标的关键之一。本文详细给出了船摇前馈量的具体计算公式,并在卫星发射任务中进行了应用和验证。

Processing of the Shaking Feedforward Data of Space Instrumentation Ships

Ship-shaking feedforward is a tracking and control vessel stabilization design method and it is field-proven to be beneficial to improvement of system error.Feedforward on object speed,especially acceleration feedforward,is better than feedforward on ship-shaking in the improvement.Two reasons result in this.First,object flight change is slower than ship-shaking change and has more low frequency components and thus provides for higher precision data following filtering.Second,ship-shaking feedforward,especi...