By Gennady I. Belchansky
Lively (imaging radar) and passive (radiometer) microwave platforms are more and more used for Arctic ecological learn. regrettably, previously ecologists attracted to distant sensing frequently lacked entry to the total suite of actual and analytical innovations of microwave platforms, info processing, and ecological functions simply because an appropriate reference e-book didn't exist. Arctic Ecological study from Microwave satellite tv for pc Observations solutions this call for through summarizing the most microwave satellite tv for pc functions for Arctic ecological examine. This booklet is beneficial to experts with a history in microwave concepts, in addition to to different ecologists drawn to functions of microwave lively and passive distant sensing for tundra, boreal woodland, and Arctic sea-ice habitat and marine mammal stories. It provides a quick advent to Arctic ecological difficulties, the function of satellite tv for pc sensing for tracking Arctic ecosystems, and comparable facts processing functions. the amount then examines result of Arctic sea-ice habitat experiences utilizing OKEAN-01 satellite tv for pc info, then presents a comparative research of multisensor satellite tv for pc tracking of habitat utilizing OKEAN-01, SSM/I and AVHRR satellite tv for pc tools. It additionally describes the review of relative info content material of ALMAZ-1, ERS-1, JERS-1 SAR, and Landsat-TM info for determining rainy tundra habitats. The booklet concludes with result of delicate boreal wooded area style detection to watch power affects of weather swap on boreal woodland constitution.
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Extra info for Arctic Ecological Research from Microwave Satellite Observations
The focusing algorithm allows control of a spatial resolution by means of the multi-look technique, and provides a set of window functions for flexible adjustment of the synthesized gain pattern. Chapter 9 describes some aspects of polar bear regional ecology studies using simultaneous satellite telemetry and microwave remote sensing data collected by OKEAN-01 and SSM/I instruments. These aspects include regional and seasonal changes in habitat parameters; daily, seasonal and annual variability of movement rates; individual and group-specific direction and migration patterns, and a characteristic of using a particular type of habitat.
The microwave radiometers use only real apertures and measure the microwave energy emitted and/or reflected from terrain features. Radar systems are divided into radar-altimeters, scatterometers (measuring the radar backscatter from wind-induced capillary waves), and imaging radars providing high (synthetic aperture radar—SAR) and middle (real aperture radar—RAR) resolution day/night and all-weather images of ocean, land and ice surfaces. There are three main principles of frequency selection for all microwave instruments (Curlander and McDonough, 1991).
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