Qu’est-ce que le speckle?

Sel et poivre? Le chatoiement (terme retenu en français pour le terme Speckle utilisé en anglais) correspond à une grande variabilité des réponses entre pixels…

Mécanismes de rétrodiffusion

Des mécanismes de diffusion ? Les ondes radar (domaine des micro-ondes centimétriques) interagissent avec les objets placés au sol et sont diffusées dans toutes les…

L’équation radar

Que décrit l’équation radar? Que décrit l’équation radar?Pour un système imageur radar qui émet des impulsions, il est important de pouvoir mesurer la part d’énergie…

Qu’est ce que la rétrodiffusion radar ?

Dans cette rubrique, vous découvrirez les principaux concepts qui s’appliquent à tout système d’imagerie radar. Le système radar est actif. L’antenne réceptrice reçoit la partie…

La ecuación radar

¿Qué describe la ecuación del radar? Para cada sistema radar, el rendimiento obtenido dependerá de si puede medir o no el eco que regresa de…

¿Qué es el speckle?

¿Sal y pimienta? No, esta no es una clase de cocina, pero lo cierto es que el speckle hace que la interpretación de las imágenes…

Mecanismos de scattering

Mecanismos de scattering Las microondas interactúan con los objetos en el suelo. De hecho, eso es lo que estamos tratando de medir con nuestros satélites…

¿Qué es el backscattering radar?

En este tema aprenderá los principales conceptos que se aplican en todo sistema de imágenes de radar. El concepto del término “backscattering” (se podría traducir…

What is Radar Backscatter?

In this topic you will learn about the main concepts that apply in every radar imaging system.  The concept of the term ‘backscatter‘ is often…

Backscatter Mechanisms

Scattering mechanisms? Microwaves interact with objects on the ground. In fact, that is what we are trying to measure with our radar satellites, in order…

The Radar Equation

What does the radar equation describe? For every radar system, the performance is based on how well it can measure the echo returning from an…

What is Speckle?

Salt’n pepper? No, this is not a cooking lesson, but speckle certainly makes the interpretation of SAR imagery more spicy. If you look closely at…

References

  • Bourgeau-Chavez, L.L., Lee, Y.M., Battaglia, M., Endres, S.L., Laubach, Z.M. & Scarbrough, K. (2016): Identification of
    Woodland Vernal Pools with Seasonal Change PALSAR Data for Habitat Conservation. In: Remote Sensing, 8, 490.
  • Clinuvel (2019):Understanding the Electromagnetic Spectrum. <https://www.clinuvel.com>.
  • Centre for Remote Imaging, Sensing & Processing (CRISP, 2001): SAR Imaging – Frequency, Polarisation and Incident Angle. Microwave Frequency. <https://crisp.nus.edu.sg/~research/tutorial/freqpol.htm>.
  • Edmund Optics Inc. (2019): Introduction to Polarization.
    <https://www.edmundoptics.com/resources/application-notes/optics/introduction-to-polarization/>.
  • Esch, S. (2018): Determination of Soil Moisture and Vegetation Parameters from Spaceborne C-Band SAR on Agricultural
    Areas. Dissertation. University of Cologne.
  • European Space Agency (ESA, 2013): Satellite frequency bands. <https://www.esa.int/Applications/Telecommunications_Integrated_Applications/Satellite_frequency_bands>
  • European Space Agency (ESA, 2014): Special Features of ASAR.
    <https://earth.esa.int/handbooks/asar/CNTR1-1-5.html>.
  • European Space Agency (ESA, 2019): Radar Course 2. <https://earth.esa.int/..,>.
  • European Space Agency (ESA, 2019): Radar Course 3. <https://earth.esa.int/..,>.
  • Evans, T. (2013): Habitat Mapping of the Brazilian Pantanal using Synthetic Aperture Radar Imagery and Object Based
    Image Analysis. <Evans Master Thesis>.
  • Flores-Anderson, A.I., Herndon, K.E., Thapa, R.B. & Cherrington, E. (2018): The Synthetic Aperture Radar (SAR)
    Handbook: Comprehensive Methodologies for Forest Monitoring and Biomass Estimation.
    <https://gis1.servirglobal.net/TrainingMaterials/SAR/SARHB_FullRes.pdf>.
  • Gaber, A., Soliman, F., Koch, M. & El.Baz, F. (2015): Using full-polarimetric SAR data to characterize the surface
    sediments in desert areas: A case study in El-Gallaba Plain, Egypt. In: Remote Sensing of Environment, 162, 11-28.
  • Jagdhuber, T. (2012): Soil parameter retrieval under vegetation cover using SAR polarimetry. Ph.D. dissertation, Univ.
    Potsdam, Germany [Online]. Available: http//: opus.kobv.de.
  • Jack, H. (2013). Manufacturing Processes. Surfaces. <http://engineeronadisk.com/V3/engineeronadisk-67.html>.
  • Jet Propulsion Laboratory (JPL, 2019): Polarimetry. <https://nisar.jpl.nasa.gov/technology/polsar/>.
  • Le Toan, T. (2007): Introduction to SAR Remote Sensing. Advanced Training Course on Land Remote Sensing. <https://earth.esa.int/landtraining07/D1LA1-LeToan.pdf>.
  • Meng, H., Wang, X., Chong, J., Wei, X. & Kong, W. (2017): Doppler Spectrum-Based NRCS Estimation Method for Low
    Scattering Areas in Ocean SAR Images. In: Remote Sensing, 9, 219.
  • Moreira, A., Prats-Iraola, P., Younis, M., Krieger, G., Hajnsek, I. & Papathanassiou, K. P. (2013): A Tutorial on Synthetic
    Aperture Radar. In: IEEE Geoscience and Remote Sensing.
  • Nave, R. (2005): HyperPhysics. The Rayleigh Criterion.
    <http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/Raylei.html>.
  • National Aeronautics and Space Administration, Science Mission Directorate (NASA, 2010): Introduction to the Electromagnetic Spectrum. Retrieved [10.03.2020], from NASA Science website: http://science.nasa.gov/ems/01_intro
  • Pohl, C., Tempfli, K., & Huurneman, G.C. (2004): Active Sensors. In: Kerle, N., Janssen, L.L.F. & Huurneman, G.C. (Editors): Principles of Remote Sensing. An introductory textbook. ITC Educational Textbook Series, 95-120.
  • Richards, J.A. (2009): Remote Sensing with Imaging Radar.  <https://www.springer.com/de/book/9783642020193>.
  • Schumann, G.J.-P. & Moller, D.K. (2015): Microwave remote sensing of flood inundation. In: Physics and Chemistry of
    the Earth
    , 83, 84-95.
  • Small, D. (2011): Flattening Gamma: Radiometric Terrain Correction for SAR Imagery. In: IEEE Transactions on
    Geoscience and Remote Sensing
    , 49, 3081-3093.
  • Utah State University (2019): Orchard irrigation. <https://www.intermountainfruit.org/orchard-irrigation/swc>.
  • Woodhouse, I. H. (2006): Introduction to microwave remote sensing. Taylor & Francis, New York.
    <https://www.crcpress.com/Introduction-to-Microwave-Remote-Sensing/Woodhouse/p/book/9780415271233>.