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提出一种机载成像系统目标被动定位算法,应用机载成像设备,实现对图像中目标的精确定位。首先,根据镜头设计参数,计算得到理想小孔成像模型下图像中目标点坐标信息,并根据图像视场和分辨率,计算得到目标在成像系统坐标系下空间信息;其次,根据成像系统安装位置信息和载机姿态信息,计算得到目标在惯导坐标系下空间位置信息;最后,根据载机经纬度和高度信息,计算得到目标实际位置信息。通过对采集到的实验数据进行分析,结果表明,文中方法具有较高的定位精度和处理效率。
A target passive positioning algorithm for airborne imaging system is proposed. The on-board imaging equipment is used to realize the accurate positioning of the target in the image. Firstly, according to the lens design parameters, the coordinate information of the target point in the image of the ideal pinhole imaging model is calculated, and the spatial information of the target in the coordinate system of the imaging system is calculated according to the image field of view and the resolution. Secondly, Information and aircraft attitude information, calculate the target position in the inertial navigation system space; Finally, according to the longitude and latitude of the aircraft carrier and altitude information, calculate the actual location of the target information. Through the analysis of the collected experimental data, the results show that the method has high positioning accuracy and processing efficiency.