摘要
为实现高分辨率、多光谱、宽覆盖的遥感测量,对空间光学遥感器由3片TDI CCD组成的焦面组件进行了设计,并提出了一种新的拼接方法。根据空间光学遥感器采用的多光谱TDI CCD外形尺寸较大、几乎占满整个结构设计空间的特点,对其焦平面进行了紧凑型的机械交错拼接设计;根据紧凑型多光谱焦平面的特点,结合图像处理技术进行了拼接,对由CCD拼接仪产生的图像进行了放大和处理,以尽量消除因人眼视觉误差对拼接精度产生的影响,提高拼接精度;最后进行了拼接验证。结果表明,该方法拼接出的焦面各片CCD之间的搭接误差<3μm,两排CCD的平行度误差<3μm,共面性误差<5μm,满足空间光学遥感器的成像要求。
A focal plane of the space optical remote sensor which was composed of three TDI CCD was designed and A new assembly method was proposed for achieving high resolution,multispectral,wide coverage of remote sensing images.The focal plane of space optical remote sensor was staggered lap compact mechanical design according to its characteristics such as multi-spectral shape,larger size TDI CCD which almost full design structure space.The mosaic images generated by the splicing CCD was amplified and processed to eliminate possible errors which due tohuman visual impacing on the stitching accuracy and improve stitching accuracy based on the compact multi-spectral characteristics of the focal plane.Finally,the results of splicing were verified.The results showed that,based on the method of splicing,the focal plane of the CCD chip overlap error was less than 3 μm,the parallel error between two rows CCD less than 3 μm,the coplanar error less than 5 μm,and the imaging requirements of the space optical remote sensor could be satisfied.
出处
《光机电信息》
2010年第8期47-52,共6页
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