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Using GPS trajectories to recommend pick-up points for taxi driver comes to be a promising approach of increasing profits and decreasing pollutions. In the existing methods, nearly all the GPS data of a city are computed for recommendation. However, it is time-consuming and not accurate enough owing to too much spatio-temporal noise. Therefore, we propose a novel method of recommending pick-up for...
Carbon to nitrogen ratio is the key factor of wheat growth. In this paper, the hyperspectral image(HSI)of environment and disaster monitoring and forecasting of small satellite constellation A (HJ-1A) in wheat turning green stage was acquired, and the in-situ wheat canopy spectral reflectance, leaf nitrogen content, leaf sugar content, as well as others physical and chemical parameters of winter wheat...
Atmospheric upward and downward radiations in visible and near-infrared bands are the key input parameters for radiative transfer modeling, imaging simulation and atmospheric correction. This study gives the numeral models and computing methods of the atmospheric parameters which are related to the two parameters according to four-stream radiative transfer theory. Focusing on the six bands of Landsat...
A new forest leaf area index (LAI) inversion method from multisource and multi-angle data combined with radiative transfer model and the strategy of k-means clustering and artificial neural network (ANN) was discussed. The four different temporal satellite images of Landsat-5 TM (L5TM) and Beijing-1 microsatellite multispectral sensors (BJI) were selected to construct multisource and multi-angle data...
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