数据精度是舰载IRST的重要指标,安装误差是影响该精度的因素之一。分析了IRST在船上安装存在的误差,根据其稳定平台的工作原理,建立了五个坐标系,通过矩阵变换,推导了安装误差对IRST精度影响的计算方法。计算了多种工况下导致的误差,结果表明,安装误差对IRST精度影响较大,在纵横摇较大的情况下容易导致数据精度超差,因此,需要对其进行控制或补偿。

Data accuracy is an important index of the shipborne IRST, and the installation error is an influence factor of the data accuracy. According to the working principle of IRST, the errors of installation on board were analyzed, five coordinate systems were established. Through the matrix transformation, the calculation method the installation error of the effect on accuracy was derived. The errors caused to various working conditions were calculated. The results show that the installation error has a great influence on the IRST, and it is easy to lead to the data accuracy deviation when the vertical and horizontal shaking is too large so it is necessary to control or compensate for it.