By Seelye Martin
Absolutely up-to-date, with major new assurance 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, find out how to comprehend observations from Earth-observing platforms, and the observations' value to actual and organic oceanography. It offers complete motives of radiative move, ocean floor homes, satellite tv for pc orbits, tools and techniques, seen distant sensing of biogeochemical houses, 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 information the place information could be acquired, and readers can receive on-line instruments for operating with the information - allowing hands-on engagement with real-world observations. this is often a fantastic textbook for graduate and complicated undergraduate scholars in oceanography, distant sensing and environmental technological know-how, and a realistic source for researchers and pros operating with oceanographic satellite tv for pc facts.
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Additional info for An Introduction to Ocean Remote Sensing
In Earth observations, geosynchronous satellites provide observations of weather, SST and ocean color, and provide data relay services. The Sun-synchronous orbit is retrograde with I > 90°, and has an altitude of about 800 km, or a much lower altitude than the geosynchronous orbits. The Sun-synchronous period is about 90 minutes, corresponding to about sixteen orbits per day. The reason why this orbit is called Sun-synchronous is that throughout the year each orbit crosses the equator at the same local time of day.
The geosynchronous orbits are located at an altitude of 35 800 km above the equator. The geostationary orbit is a special case; it lies in the Earth’s equatorial plane (I = 0°). In this orbit, although the satellite is orbiting the Earth such that it moves in and out of the Earth’s shadow, its position remains over a fixed equatorial location so that it continuously observes the same surface area. The plane of the more general geosynchronous orbit is tilted relative to the equator (I = 0°), so that, although the mean surface position of this satellite is stationary, its ground path is described by a figure eight centered on the equator (Elachi, 1987).
The following summary shows that each particular orbit has advantages and disadvantages. Because no single orbit allows coverage of all space and time scales, there is no such thing as a “perfect” satellite orbit or system. Instead, the choice of orbit depends on the phenomenon under investigation. The geosynchronous orbits are located at an altitude of 35 800 km above the equator. The geostationary orbit is a special case; it lies in the Earth’s equatorial plane (I = 0°). In this orbit, although the satellite is orbiting the Earth such that it moves in and out of the Earth’s shadow, its position remains over a fixed equatorial location so that it continuously observes the same surface area.