By Seelye Martin
Totally up to date, with major new insurance of advances in satellite tv for pc oceanography and effects from new satellite tv for pc missions, the second one variation of this well known textbook introduces scholars to how distant sensing works, how one can comprehend observations from Earth-observing structures, and the observations' value to actual and organic oceanography. It offers complete reasons of radiative move, ocean floor houses, satellite tv for pc orbits, tools and techniques, noticeable distant sensing of biogeochemical homes, infrared and microwave retrieval of sea floor temperature, sea floor salinity retrieval, passive microwave measurements, scatterometer wind retrieval, altimetry and SAR. additionally integrated are descriptions of the net documents the place information may be received, and readers can receive on-line instruments for operating with the information - allowing hands-on engagement with real-world observations. this is often an excellent textbook for graduate and complicated undergraduate scholars in oceanography, distant sensing and environmental technology, and a realistic source for researchers and execs operating with oceanographic satellite tv for pc facts.
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Additional info for An Introduction to Ocean Remote Sensing
For LEO, IADC (2007) recommends that, when the satellite approaches the end of its lifetime, it be deorbited into the atmosphere. 002 –60 –135 –90 –90 0 45 90 135 180 Fig. 5. Graphic of the South Atlantic Anomaly (SAA) showing the contours of the relative probability for space systems to suffer single anomalous events caused by high-energy protons at an altitude of 1000 km. See the text for further description. ) the geosynchronous belt. For both sets of orbits, to minimize the generation of debris by break-up of the satellites, all fuel tanks should be depressurized and any energy contained in momentum wheels should be depleted.
For a nadir view, the FOV is a circle; because of the Earth’s curvature at off-nadir view angles, the FOV is an ellipse. 2 Cross-track or whiskbroom scanners The next sub-sections describe three scanning techniques that are primarily used in the visible/infrared and in low Earth orbits, while Chapter 8 describes the analogous microwave scanners. First, whiskbroom scanners construct images from the combination of the satellite motion along its trajectory and the rotation of a telescope–mirror combination relative to the spacecraft.
7 shows the terminology and geometry for a satellite sensor viewing the Earth’s surface. On this figure, the point on the surface beneath the satellite is its nadir point; the point observed by the instrument is its scan point. Zenith means directly overhead. 198mm CUUK2533-01 CUUK2533/Martin ISBN: 978 1 107 01938 6 16 November 25, 2013 Background Sensor Sun θS θV θ Satellite nadir point Satellite scan point Fig. 7. The angles used to describe the sensor view direction and the solar angle relative to a spherical Earth.