基于自检校的机载线阵CCD传感器几何标定

摘要

将基于附加参数的自检校光束法区域网平差技术应用于机载线阵CCD传感器几何标定中，以ADS40为对象，分析集成传感器成像几何关系，引入GPS观测值数学模型和IMU视轴偏心角模型，建立用于标定的自检校光束法区域网平差模型；在深入分析机载三线阵CCD传感器成像误差特性的基础上，建立有效的相机标定参数模型；并采用检校场ADS]0数据进行了标定试验，结果表明几何标定方法可行有效，可显著提高测量精度和可靠性。%The self-calibration bundle block adjustment technique based on the additional parameters is applied to the airborne linear CCD sensor geometric calibration. Taking the ADS40 sensor for example, the integrated sensor imaging relationship is analyzed firstly, and then the GPS observations model, the IMLI misalignment angle model are introduced. The self-calibration bundle block adjustment model for the calibration is set up. Upon the detailed investigation on the imaging error properties, the suitable sensor calibration parameter model is built up. Finally the ADS40 data on the test field is used for the calibration experiments. Experimental results prove that the geometric calibration method is correct and effective,which can significantly improve the measuring accuracy and the reliability.