ZY-102C星数据在矿山遥感监测中的应用研究与分析

Study and analysis of application of ZY- 1 02C satellite data to remote sensing monitoring technology for exploration of mineral resources

利用资源一号(ZY-1)02C卫星(以下简称02C星)全色高分辨率相机(HR)和多光谱相机(MUX)数据,以河北承德多金属矿区和江西寻乌稀土矿区为实验区,开展了1∶5万矿山遥感监测应用研究;分析了应用过程中存在的问题,提出了解决方案和建议,对02C星数据在矿山遥感监测中的规模化应用起到了示范效果。研究结果表明:在数据处理流程上,对空间分辨率为2.36 m的02C星全色HR1与HR2数据需先进行正射纠正再拼接,对空间分辨率为10 m的多光谱数据MUX可采用假彩色合成方法进行模拟真彩色合成;在矿山地物识别上,与SPOT5图像比较,02C星图像可更好地反映出开采面、开采点、中转场和矿山建筑等矿山地物类型,不足之处是纹理信息较平滑、矿山地物的边界相对模糊,因而增加了室内解译的难度;在经济效益上,02C星数据的性价比优势明显。因此,尽管02C星数据处理和解译工作量较大,但其能满足1∶5万矿山遥感监测要求,总体经济效益显著。

With the HR/MUX data of ZY -1 02 C obtained from Chengde and Xunwu experimental areas as examples,the authors applied the remote sensing monitoring technology to the exploration of mineral resources at the scale of 1∶ 50 000. The problems in the application process were studied and analyzed, the solutions and recommendations, which play a demonstration role in the large - scale application of mineral exploration monitoring, were proposed. Some conclusions have been reached： In the data processing,the 02C HR1and HR2 data with 2. 36 m resolution must be orthorectified first before splicing, and the MUX data with 10 m resolution should be composed with simulated true color by using the false color composition method. In the aspect of mine object recognition, the 02C image can better reflect mining position, transit field, mine construction and other types of mining features in comparison with SPOT5 image, but its relative smooth texture information and relative fuzzy boundary of the mine ground objects increase the difficulty of indoor interpretation. In economic efficiency, the price advantage of 02C data is obvious. Although the 02C data processing and interpreting have larger workload, it can meet the remote sensing monitoring of mineral exploration at 1∶50 000 scale, and the overall economic benefit is significant.