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Lecture 6: Thermal Radiation
3.Thermal infrared: emitted, can only be detected using electro-optical sensors (3.0 - 5.0 and 8 - 14 µm). Microwave Radar sensors, wavelengths range from 1mm - 1m (Ka, Ku, X, C, S, L & P) Spectral bands Three important spectral bands in remote sensing: ¥visible light ¥infrared radiation ¥microwave radiation Image from NASA 1987.
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Lecture 7: Propagation, Dispersion and Scattering
topex.ucsd.edu¥ For visible light, water vapor, dust, and other particles ranging from a few tenths of a micrometer to several micrometers in diameter are the main scattering agents. The amount of scatter is greater than Rayleigh scatter and the wavelengths scattered are longer. ¥ Pollution also contributes to beautiful sunsets and sunrises. The
Thermal Radiation
topex.ucsd.eduThermal radiation is emitted by all objects above absolute zero (-273.15 °C) ! Spectrum of this radiation (i.e. intensity vs wavelength) usually follows the
USE OF COLOR IN REMOTE SENSING - University of …
topex.ucsd.edu2 Some optical remote sensing systems such as Landsat and Spot are basically modeled after the human visual system: they record images in …
USE OF COLOR IN REMOTE SENSING - topex.ucsd.edu
topex.ucsd.edu2 Some optical remote sensing systems such as Landsat and Spot are basically modeled after the human visual system: they record images in multiple, rather narrow wavelength bands (similar to
Waves and Weather - topex.ucsd.edu
topex.ucsd.eduWhere do waves come from? ==> Wind! Any two fluids (with different density) moving at different speeds can produce waves. In our case, air is one fluid and the water is the other.
The Gravity Field of the Earth - Part 1 (Copyright 2002 ...
topex.ucsd.eduThe mass is in orbit about the center of the Earth so the outward centrifugal force is balanced by the inward gravitational force; this is Kepler’s third law. If we measure the radius of the satellite orbit r and the orbital frequency ω s, we can estimate GM e. For example the satellite Geosat has
A Principles of Synthetic Aperture Radar
topex.ucsd.eduilluminate the earth over a large elliptical footprint. The reflected energy returns to the radar where it is recorded as a function of fast time in the range direction and slow time, or echo number, in the azimuth direction. 33
Reference Earth Model - WGS84 - University of California ...
topex.ucsd.edue is the value of gravity on the equator and m is approximately equal to the ratio of centrifugal force at the equator to the gravitational acceleration at the equator. In practice, geodesists get together at meetings of the International Union of Geodesy and Geophysics (IUGG) and agree on such things as the parameters of WGS84.
Electromagnetic Radiation and Polarization
topex.ucsd.eduthrough space, and how it interacts with other matter, it is useful to describe the processes using two different models: • the wave model, and • the particle model.! EM waves are energy transported through space in the form of ... Gauss's law for magnetism: Maxwellʼs Faraday rotation: Ampereʼs circuital law: E = electric field (vector)
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researchweb.iiit.ac.in• The main difference between thermal infrared and near infrared is that thermal infrared is emitted energy, whereas the near infrared is reflected energy, similar to visible light. Thermal Remote Sensing Atmospheric Transmission The windows normally used for aircraft platforms are in the 3-5 micron and 8-14 micron wavelength regions
Lecture 7: Propagation, Dispersion and Scattering
topex.ucsd.edu¥ For visible light, water vapor, dust, and other particles ranging from a few tenths of a micrometer to several micrometers in diameter are the main scattering agents. The amount of scatter is greater than Rayleigh scatter and the wavelengths scattered are longer. ¥ Pollution also contributes to beautiful sunsets and sunrises. The