The objective of this paper is to present the contribution of a new dielectric constant characterisation for the modelling of radar backscattering behaviour. Our analysis is based on a large number of radar measurements acquired during different experimental campaigns (Orgeval'94, Pays de Caux'98, 99). We propose a dielectric constant model, based on the combination of contributions from both soil and air fractions. This modelling clearly reveals the joint influence of the air and soil phases, in backscattering measurements over rough surfaces with large clods. A relationship is established between the soil fraction and soil roughness, using the Integral Equation Model (IEM), fitted to real radar data. Finally, the influence of the air fraction on the linear relationship between moisture and the backscattered radar signal is discussed.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3787417 | PMC |
| http://dx.doi.org/10.3390/s8116810 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Capillary electrophoresis separations with Betaine:Urea, a deep eutectic solvent as the separation medium.
Anal Chim Acta
January 2025
School of Pharmacy, Jiangsu University, Zhenjiang, 212013, PR China. Electronic address:
Background: Capillary electrophoresis (CE) is a highly versatile separation technique widely used in analytical chemistry. Traditionally, CE can be categorized as either aqueous or non-aqueous systems based on the buffer solvents employed. For decades, non-aqueous CE has been predominantly associated with the use of organic solvents, a perception deeply ingrained in the scientific community.
View Article and Find Full Text PDFPoly(lactide)/poly(butylene adipate-co-terephthalate)/carbon nanotubes composites with robust mechanical properties, fatigue-resistance and dielectric properties.
Int J Biol Macromol
January 2025
Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei 230022, China.
A styrene-glycidylmethacrylate-1-allyl-3-vinylimidazole epoxy functionalized ionomer (EFI) was synthesized, and the EFI and carbon nanotubes (CNTs) were co-introduced into poly(lactide)/poly(butylene-adipate-co-terephtalate) (PLA/PBAT) blends to fabricate high performance composites with excellent mechanical properties, fatigue-resistance and dielectric properties. It is revealed that EFI can improve the interaction force between PLA and PBAT by inducing the interfacial crosslink reaction, thereby improving the melt strength of the samples. EFI can also refine the dispersion of CNT in the composites owing to the non-covalent force between EFI and CNT, promote the formation of filler network inside composites, which is demonstrated by DMA and rheological test results.
View Article and Find Full Text PDFMastering the Copolymerization Behavior of Ethyl Cyanoacrylate as Gel Polymer Electrolyte for Lithium-metal Battery Application.
Angew Chem Int Ed Engl
January 2025
Beijing University of Chemical Technology, State Key Laboratory of Organic-Inorganic Composites, 15 North Third Ring Road East, 37830, Beijing, CHINA.
Polymers with strong electron-withdrawing groups (e.g., cyano-containing polymers) are attractive for a wide range of applications due to their high dielectric constant and outstanding electrochemical stability.
View Article and Find Full Text PDFSynergistic Chloroform-Methanol Binary Solvent Mixture Is Inherently Spatially and Dynamically Heterogeneous.
J Phys Chem B
January 2025
Centre for Lasers & Photonics, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
Nonideality in a binary solvent mixture is manifested through anomalies in various physical properties like viscosity, dielectric constant, polarity, freezing point, boiling point, and so forth. Sometimes, such anomalies become much more prominent, leading to a synergistic behavior, where the physical property of the mixture is way different from its bulk counterparts. Various alcohols/chlorinated methane binary solvent mixtures show such a synergistic behavior.
View Article and Find Full Text PDFMagnetoelectric properties and Morin type spin transitions of Na-doped GaFeO.
J Phys Condens Matter
January 2025
Department of Physics, University of Kerala, Karyavattom 695581, Thiruvananthapuram, Kerala, India.
The effects of Na doping on the structure magnetic, electric, and magnetoelectric properties of GaFeOwere studied. Rietveld refinement of the XRD data reveals the formation of a single-phase trigonal structure with no impurity on Na doping up to 50% and a significant increase in lattice strain with doping. FTIR and Raman analysis further supported the phase purity of the samples.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!