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A Low-Cost Optical Remote Sensing Application for Glacier Deformation Monitoring in an Alpine Environment

机译:一种低成本光学遥感应用用于高山环境中的冰川变形监测

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摘要

In this work, we present the results of a low-cost optical monitoring station designed for monitoring the kinematics of glaciers in an Alpine environment. We developed a complete hardware/software data acquisition and processing chain that automatically acquires, stores and co-registers images. The system was installed in September 2013 to monitor the evolution of the Planpincieux glacier, within the open-air laboratory of the Grandes Jorasses, Mont Blanc massif (NW Italy), and collected data with an hourly frequency. The acquisition equipment consists of a high-resolution DSLR camera operating in the visible band. The data are processed with a Pixel Offset algorithm based on normalized cross-correlation, to estimate the deformation of the observed glacier. We propose a method for the pixel-to-metric conversion and present the results of the projection on the mean slope of the glacier. The method performances are compared with measurements obtained by GB-SAR, and exhibit good agreement. The system provides good support for the analysis of the glacier evolution and allows the creation of daily displacement maps.
机译:在这项工作中,我们介绍了一个低成本的光学监测站的结果,该监测站旨在监测高山环境中的冰川运动学。我们开发了完整的硬件/软件数据采集和处理链,可以自动采集,存储和共同注册图像。该系统于2013年9月安装,在勃朗峰地块(意大利西北)的Grandes Jorasses露天实验室内监视Planpincieux冰川的演变,并每小时收集一次数据。采集设备由在可见波段工作的高分辨率数码单反相机组成。使用基于归一化互相关的像素偏移算法处理数据,以估计观测到的冰川的变形。我们提出了一种像素到公制转换的方法,并给出了在冰川平均斜率上的投影结果。该方法的性能与GB-SAR的测量结果进行了比较,并显示出良好的一致性。该系统为冰川演化的分析提供了良好的支持,并允许创建每日位移图。

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