【摘要】 针对具有高姿态测量精度、高姿态稳定度且探测器采用机械式交错拼接的光学卫星受到微量高频姿态误差影响时，所产生的全色数据与多光谱数据间微小几何定位误差问题，提出了基于高频修正姿态的高分辨率光学卫星全色与多光谱影像几何定位一致性修正方法。在推扫式光学遥感卫星成像原理的基础上建立严密成像几何模型，利用机械式交错拼接成像探测器的分时成像特性，结合几何定位约束及金字塔影像搜索策略的同名点匹配方法获取同名点数据，再利用同名点数据解算卫星成像过程中的高频姿态数据。最后，将解算得到的高频姿态用于对应多光谱影像的传感器几何校正处理中，得到基于高频修正姿态的多光谱影像数据。实验结果表明：该方法有效消除了由微量高频姿态误差引起的全色数据与多光谱数据间微小的几何定位偏差，使传感器几何校正后的多光谱数据与全色数据具有高精度几何定位一致性，将具有高姿态测量精度、高姿态稳定度且探测器采用机械式交错拼接的高分辨率推扫模式成像光学卫星的全色数据与多光谱数据间行方向的相对几何定位误差提升至0.15个多光谱像元，以为后续高精度影像融合产品的生产奠定基础。更多还原

【Abstract】 There are small geometric positioning errors between panchromatic data and multispectral data when optical satellites, which have high attitude measurement accuracy, high attitude stability, and detectors using mechanical staggered stitching, are affected by slight high-frequency attitude errors. In this paper, a high-resolution optical satellite panchromatic and multispectral image geometric positioning consistency correction method based on the high-frequency corrected attitude is proposed to address this problem, and the proposed method is validated by in-orbit satellite data. First, a rigorous geometric model is realized according to the principle of the push-broom satellite. Second, the time-sharing imaging characteristics between mechanical staggered stitching detectors are used to obtain the homonymous image point data by combining geometric positioning constraints and the matching method of the pyramid image search strategy, and the homonymous image point data are used to obtain the high-frequency attitude data in the satellite imaging process. Finally, the obtained high-frequency attitude data are used in the sensor geometry correction processing of multispectral images to obtain multispectral image data corrected by the highfrequency corrected attitude. The results indicate that the proposed method effectively eliminates the small geometric positioning error between panchromatic and multispectral data caused by the slight high-frequency attitude error, so that the geometrically corrected multispectral and panchromatic data have high-precision geometric positioning consistency. The proposed method can improve the relative geometric positioning error in the row direction between the panchromatic and the multispectral data to better than 0. 15 pixel of the multispectral image, which lays a solid foundation to produce high-precision image fusion products for high-resolution optical satellites with high attitude measurement accuracy, high attitude stability, and mechanical staggered stitching detectors.更多还原