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Plant biomass is an important parameter for crop management and yield estimation. The potential of compact polarimetric (CP) synthetic aperture radar (SAR) data in estimating biomass of oilseed rape crop (Brassica napus L.) is investigated in this study. Five CP SAR imagery was simulated using five fully polarimetric Radarsat-2 data, and the dynamic evolution of polarimetric features, relying on different...
Unique polarimetric information included in SAR data hasn't received deserved attention, especially in the retrieval of crops biophysical parameters. This paper finds that two polarimetric parameters, that is polarimetric scattering entropy (H) and mean scattering angle (α), have great potential in crops biophysical parameters retrieval. Polarimetric features extracted by eigenvector-based and model-based...
The scale and distribution of electric multiple unit maintenance base are important to improve the efficiency and capacity of high-speed railway network, but it is less studied in previous papers. On the basis of studying foreign experiences of distribution of electric multiple unit maintenance base, and examination and repair method, the paper analyzes the characteristics and affecting factors of...
Based on the characteristics of operation mode for systems of intercity railway lines, this paper analyzes the dynamic relationship between passenger flow and train service plan. The dynamic relationship is described by using mathematical methods in terms of the close correlation between properties of transport products and technical indicators of train service plan. A real-life instance of Beijing-Tianjin...
This paper refers to transaction cost, studying the stability of cartel and comparing it to the traditional balance scale of cartel through the perspective of a regular static model. Thus, we make 2 conclusions: Firstly, after introducing transaction cost, it's hard to meet the requirements of cartel's inner stability. Secondly, transaction cost reduces the profit of cartel and decreases marginal...
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