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- 2016
地心直角坐标系下的航摄光学影像严密定位模型
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Abstract:
对地心直角坐标系(Earth-centered Earth-fixed, ECEF)中航空光学影像几何定位模型的应用潜力及难点进行了分析,提出了四元数初始姿态与欧拉补偿偏置角相结合的严密定位模型,避开了单独使用四元数时姿态参数去相关性、高频变化姿态精化模型表达,以及姿态与其他观测值联合平差等方面存在的困难,克服了单独使用欧拉角姿态时可能存在的奇异、多解等不足,能够吸收已有成熟的定位定姿系统(position and orientation system, POS)辅助光束法平差方法,实现了ECEF下航摄光学影像的严密定位。利用航空框幅式影像和三线阵影像进行了实验,证明了模型和方法的可行性。本文模型不受影像地理覆盖范围的限制,能为ECEF中包含航空光学影像在内的多源遥感数据的联合处理提供参考
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