Toward High Altitude Airship Ground-Based Boresight Calibration of Hyperspectral Pushbroom Imaging Sensors
Toward High Altitude Airship Ground-Based Boresight Calibration of Hyperspectral Pushbroom Imaging Sensors
复制标题
高空飞艇高光谱推扫式成像传感器地面视轴校准
DOI：
10.3390/rs71215883
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发表时间：
2015-12
期刊：
影响因子：
5
通讯作者：
Li Hanlun
中科院分区：
文献类型：
--
作者：
Zhang Aiwu;Hu Shaoxing;Meng Xiangang;Yang Lingbo;Li Hanlun
The complexity of the single linear hyperspectral pushbroom imaging based on a high altitude airship (HAA) without a three-axis stabilized platform is much more than that based on the spaceborne and airborne. Due to the effects of air pressure, temperature and airflow, the large pitch and roll angles tend to appear frequently that create pushbroom images highly characterized with severe geometric distortions. Thus, the in-flight calibration procedure is not appropriate to apply to the single linear pushbroom sensors on HAA having no three-axis stabilized platform. In order to address this problem, a new ground-based boresight calibration method is proposed. Firstly, a coordinate’s transformation model is developed for direct georeferencing (DG) of the linear imaging sensor, and then the linear error equation is derived from it by using the Taylor expansion formula. Secondly, the boresight misalignments are worked out by using iterative least squares method with few ground control points (GCPs) and ground-based side-scanning experiments. The proposed method is demonstrated by three sets of experiments: (i) the stability and reliability of the method is verified through simulation-based experiments; (ii) the boresight calibration is performed using ground-based experiments; and (iii) the validation is done by applying on the orthorectification of the real hyperspectral pushbroom images from a HAA Earth observation payload system developed by our research team—“LanTianHao”. The test results show that the proposed boresight calibration approach significantly improves the quality of georeferencing by reducing the geometric distortions caused by boresight misalignments to the minimum level.
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DOI：
10.1007/3-540-57956-7_63
发表时间：
1994-06
期刊：
--
影响因子：
--
作者：
R. Hartley;R. Gupta
通讯作者：
R. Hartley;R. Gupta
DOI：
10.1109/34.615446
发表时间：
1997-09-01
影响因子：
23.6
作者：
Gupta, R;Hartley, RI
通讯作者：
Hartley, RI
DOI：
10.1016/s0924-2716(01)00030-2
发表时间：
2001-06-01
影响因子：
12.7
作者：
Mostafa, MMR;Schwarz, KP
通讯作者：
Schwarz, KP
影响因子：
3.3
作者：
Francisca Parra;Francisca Parra;P. Meza;P. Meza;S. Torres;J. Pezoa;Héctor Mella
通讯作者：
Francisca Parra;Francisca Parra;P. Meza;P. Meza;S. Torres;J. Pezoa;Héctor Mella
影响因子：
1.1
作者：
Ching-Kuo Yeh;V. J. Tsai
通讯作者：
Ching-Kuo Yeh;V. J. Tsai