The Combination of Ground-Sensing Network and Satellite Remote Sensing in Huailai County

A sensor network was deployed around the remote test station at Huailai, Hebei province, China, for the purpose of substantially supporting the validation and application of remote sensing using ground-based earth observations. The observed parameters include soil moisture, solar radiation, albedo, surface temperature, and leaf area index (LAI). The ground sensors are equipped with automatic data loggers and a transferring unit that can instantaneously send the observational data to the data center using a wireless network. The observational data are then processed, analyzed, and published in online. After introducing the wireless sensor net hardware and software, some preliminary applications based on using the ground data to validate remote-sensing products are presented. The data of soil humidity from wireless sensor network (WSN) are closely related to those from the oven-drying method when the soil humidity is between 10% and 30%. From mid-July to early October, moderate-resolution imaging spectroradiometer land surface albedo product-MCD43B3-was highly consistent with the surface observational data from WSN during growing period of corn under an ideal black and white sky. Most of LAI of corn from LAI sensor are very close to the ground truth values from the harvest method. Visible Infrared Imaging Radiometer Suite (VIIRS) land surface temperature was basically consistent with the ground measured data. It is suggested that the wireless sensors can be widely deployed for validating remote-sensing products.

[1]  Frédéric Baret,et al.  Review of methods for in situ leaf area index determination Part I. Theories, sensors and hemispherical photography , 2004 .

[2]  K. Jon Ranson,et al.  The Boreal Ecosystem-Atmosphere Study (BOREAS) : an overview and early results from the 1994 field year , 1995 .

[3]  Liu Qinhuo,et al.  Improved harvesting method for corn LAI measurement in corn whole growth stages , 2010 .

[4]  Yong Tang,et al.  Optimal Nodes Selectiveness from WSN to Fit Field Scale Albedo Observation and Validation in Long Time Series in the Foci Experiment Areas, Heihe , 2015, Remote. Sens..

[5]  C. Justice,et al.  Validating MODIS Terrestrial Ecology Products: Linking In Situ and Satellite Measurements , 1999 .

[6]  Z. Niu,et al.  Watershed Allied Telemetry Experimental Research , 2009 .

[7]  Gong Peng Wireless Sensor Network as a New Ground Remote Sensing Technology for Environmental Monitoring , 2007 .

[8]  A. Lang Estimation of leaf area index from transmission of direct sunlight in discontinuous canopies , 1986 .

[9]  K. Hibbard,et al.  A Global Terrestrial Monitoring Network Integrating Tower Fluxes, Flask Sampling, Ecosystem Modeling and EOS Satellite Data , 1999 .

[10]  Qiang Liu,et al.  Modeling the land surface reflectance for optical remote sensing data in rugged terrain , 2008 .

[11]  Alan K. Betts,et al.  FIFE Surface Climate and Site-Average Dataset 1987–89 , 1998 .

[12]  Wang Jianghao,et al.  Regression Kriging Model-based Sampling Optimization Design for the Eco-hydrology Wireless Sensor Network , 2012 .

[13]  J. Privette,et al.  VALERI: a network of sites and a methodology for the validation of medium spatial resolution land satellite products , 2003 .

[14]  Zhilin Zhu,et al.  A remote sensing model for monitoring soil evaporation based on differential thermal inertia and its validation , 2003, Science in China Series D Earth Sciences.

[15]  Lin Sun,et al.  Validation of the land surface temperature derived from HJ-1B/IRS data with ground measurements , 2011, 2011 IEEE International Geoscience and Remote Sensing Symposium.

[16]  Qiang Liu,et al.  Multi-scale validation strategy for satellite albedo products and its uncertainty analysis , 2015, Science China Earth Sciences.

[17]  Kirk Martinez,et al.  Environmental Sensor Networks: A revolution in the earth system science? , 2006 .

[18]  Ke Yan,et al.  Design and Implementation of a Wireless Sensor Network-Based Remote Water-Level Monitoring System , 2011, Sensors.

[19]  Fan Chong,et al.  REMOTE SENSING AND SCALE TRANSFERING OF LEVITY PARAMETERS ON EARTH SURFACE , 2011 .

[20]  Qing Xiao,et al.  Heihe Watershed Allied Telemetry Experimental Research (HiWATER): Scientific Objectives and Experimental Design , 2013 .