SWDC-4航摄相机导航屏升级实施方法研究

Research on Improvement of the Navigation Screen for SWDC-4 Aerial Camera

在航摄工作中,飞机上的机载定位系统定位精度较低,且无法与航摄仪内置GPS位置信息同步,而SWDC-4航摄仪没有飞行员导航屏,飞行员在飞行过程中无法实时获取飞机位置信息,导致了飞行轨迹、高度和设计的航线及高度存在较大的误差。针对SWDC-4航摄仪这一缺点进行升级改造,通过对VGA视频传输信号的分析,结合航摄仪内部的相关传输路线,研究了航摄仪可升级添加飞行员导航屏的具体方法。

In aerial photography,the positioning accuracy of the airborne positioning system is low and can not be synchronized with the location information of the built-in GPS.Moreover,the SWDC-4 aerial photographing device does not have a pilot navigation screen.The pilots thus can not obtain the location information in real time,which results in great errors of the flight path,height and design of the route and height.To deal with the shortcomings of SWDC-4 aerial camera,a specific method of updating the pilot's navigation screen by the aerial camera is studied through the analysis of the VGA video transmission signals and the relevant internal transmission routes.