The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Traditional method of visiting field and surveying farmers to estimate crop yield has been considered inefficient and impractical especially in cases when fields are not easily accessible. Remote sensing techniques, therefore, has been utilize to overcome these obstacles with good success. Normalize Difference Vegetation Index (NDVI) based models are considered to be most effective and utilized technique...
A trans-provincial river flow diversion project has been implemented in the Heihe River basin since 2000 to stop the further deterioration of its downstream Ejina natural oasis. An emergent three-year water saving project were was also carried out during 2001 to 2003 as to prevent the downstream Ejina oasis from further withering. In this paper, desertification degree and net primary productivity...
In this paper, an ontology-based framework of China Geographic National Conditions Monitoring (CGNCM) land cover extraction is presented. Using statistical analysis method, spectral, texture, spatial features of each land cover class are extracted from the referenced ZY-3 image acquired in summer, 2012. Stored in the form of OWL, the features of one class can be considered as the prototype of this...
Wenchuan in Sichuan Province, China, was hit by an 8.0 magnitude earthquake on 12 May 2008. Thousands of buildings were destroyed and thousands of people were hurt. History tells us that after earthquakes, floods and other natural disaster, infectious diseases often outbreaks. In this study, with the help of spatial information technologies including remote sensing and geography information system,...
With the development of the GIS and Compute technologies, the Vehicle Navigation System (VNS) is used widely now, however, the traditional VNS is not intuitive and imaginable enough for users. To solve this problem, a novel vehicle navigation system based on multiple-source data is researched in this paper. An improved architecture based on the traditional system is purposed by adding a multi-source...
The Shitoukoumen Reservoir is the major drinking water resources for the Changchun metropolitan region. The concentration of total suspended matter (TSM) is major water quality parameter that could be retrieved using remotely sensed data. 225 samples were analyzed during 12 times of field works from April 2006 to September 2008, in which the field work conducted on 17th July 2007 and 13th September...
This work was aimed at investigating the effectiveness of genetic algorithms (GA) - partial least square (PLS) regression in estimation of canopy equivalent water thickness (EWT) from MODIS image data of the SMEX'04 site. Calibration of MODIS spectral variables (single bands, band ratios and curvatures) against the AVIRIS-derived EWT at a degraded resolution resulted in a high correlation (R2=0.77)...
As one of the major satellite-estimated surface radiation budget (SRB) dataset, the clouds and the Earth's radiant energy system-monthly gridded radiative fluxes and clouds (CERES-FSW) data have been widely used in various applications. Although CERES/ARM validation experiment (CAVE) has performed the validation work of the input data of CERES-FSW, accuracy of the CERES-FSW data itself is still unknown...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.