面向海洋监测的传感数据可用性评价技术

摘要

Wireless sensor network has grown into a critical method to monitor oceanic environment with the popularity and improvement of sensor facilities. However, differences in scope and density of sensor deployment inevitably contribute to different usability of sensor data in various locations. As a result, it is indispensable to build and evaluate different models, from which we can obtain high-quality data and conduct data cleaning. Based on the sensing model, energy consumption model and modified Leeway drift model, we propose the integrated judgment norms for ocean monitoring applications in two aspects, that is, reliability and timeliness of sensor data. Furthermore, modified methods of evaluating navigation route of data collecting vessels and selecting data sources are explored. Finally, experiments demonstrate the effectiveness of models and methods mentioned in the paper.%无线传感器网络已成为监测海洋环境信息的一种重要手段，然而由于传感设备部署的范围和密度不同，造成不同位置的感知数据的可用性差异很大，针对此建立模型并进行评价对于高质量的数据获取和清洗具有重要的意义。基于传感器节点的感知模型、能耗模型和改进的Leeway漂流模型，面向感知数据的可靠性和时效性两个方面，建立了围绕海洋监测应用的综合评判指标，进一步提出数据采集船航行路线的评价方法和数据源的选择方法，最后通过实验验证了提出模型和方法的有效性。