Zobrazeno 1 - 10
of 52
pro vyhledávání: '"M. Raffy"'
Autor:
M. Raffy, Camille Gontier
Publikováno v:
Mechanical Systems and Signal Processing. 19:714-735
This paper deals with the estimation of the statistical dispersion of the modal parameters of a structure, frequencies and damping ratios obtained from subspace identification. The main objective is to apply, after some useful modifications, the theo
Autor:
Kamel Soudani, M. Raffy
Publikováno v:
International Journal of Remote Sensing. 25:3073-3090
In homogeneous forest textures, it has been recently confirmed experimentally that, for sufficiently large ground surfaces, the Leaf Area Index (LAI) has weak variations with respect to ground surface variations. This allows computing the LAI of mixe
Autor:
Denis Blamont, M. Raffy
Publikováno v:
International Journal of Remote Sensing
International Journal of Remote Sensing, Taylor & Francis, 2003, 24 (11), pp.2289-2307
International Journal of Remote Sensing, Taylor & Francis, 2003, 24 (11), pp.2289-2307
The use of remotely sensed multispectral images in the process of cartography is a current operation, for example, in geographical information systems (GIS). A nomenclature is attached to any cartography. The present paper approaches the problem of t
On the variability of the LAI of homogeneous covers with respect to the surface size and application
Publikováno v:
International Journal of Remote Sensing. 24:2017-2035
The leaf area index (LAI) of different 100-m 2 forest plots was measured with accuracy at a resolution of 5 or 10 m 2 . The results numerically confirm that the LAI can be considered as a weakly fluctuating surface parameter for homogeneous forests a
Publikováno v:
Canadian Journal of Remote Sensing. 25:403-411
RESUMEDans le cadre de recherches menees sur la spatialisation des modeles ecologiques, un modele de simulation de la dynamique forestiere a ete concu. L'objectif est d'observer l'emergence d'un comportement global du peuplement quand seules des regl
Autor:
M. Raffy, C. Gregoire
Publikováno v:
International Journal of Remote Sensing. 19:2527-2541
Models used in remote sensing are based on the assumed relationship between measured radiances and the physical parameters of the soil surface. A number of them are semi-empirical, in the sense that they contain constants adjusted to take account of
Autor:
M. Raffy
Publikováno v:
Remote Sensing Reviews. 15:257-264
This work is an application of recent results on quantification of covered areas from mono or multi‐spectral measurements. We show that the results lead us to consider this problem in the frame work of fuzzy sets for which we give the membership fu
Autor:
M. Raffy
Publikováno v:
International Journal of Remote Sensing. 15:2381-2392
Quantification of the surface covered by a parameter distributed at the soil's surface is a current work in remote sensing. The numerical value obtained is always concerned with the resolution of the sensors. We analyse the usual thresholding procedu
Autor:
M. Raffy, C. Gregoire
Publikováno v:
International Journal of Remote Sensing. 15:2393-2401
The importance of APAR models for the study of biomass production from space requires an analysis of their performances on natural mixed pixels. This is the objective of present study which gives quantitative values for the role of heterogeneity on t
Autor:
M. Raffy
Publikováno v:
International Journal of Remote Sensing. 15:2353-2357
(1994). Change of scale theory: a capital challenge for space observation of earth. International Journal of Remote Sensing: Vol. 15, No. 12, pp. 2353-2357.