光电吊舱测角精度分析

Study on angle measuring precision of optoelectronic pods

为了达到提高光电吊舱测角精度,进而提高装备光电吊舱的无人机目标定位精度,建立了光电吊舱测角数学模型,对影响光电吊舱测角精度的因素进行归纳推导,并通过举例计算测角精度,通过减小光电吊舱框架轴零位标定误差,选用高精度测角器和控制光电吊舱与载机的安装误差,而有效提高了光电吊舱的测角精度。此外,还提出了通过系统检测提高目标定位精度的建议。

The angle measuring precision of optoelectronic pods plays an important role in improving the positioning accuracy of the unmanneded aerial vehicle. This paper gives the mathematical model for angle measuring precision. The factors to influence the measuring precision are analyzed, and the method for computing the angle measuring precision is discussed. The discussions show that higher positioning accuracy can be achieved by reducing the calibration error of the framework shaft, using more accurate angle measuring equipment and reducing the installation error of the optoelectronic pod and the aerial carrier. Moreover, some suggestions on improving the positioning accuracy are proposed.