Remote Sensing from Air and Space, Second Edition

Remote Sensing from Air and Space, Second Edition
Author(s):    R. C. Olsen
Published:   2016
DOI:             10.1117/3.2234477
eISBN: 9781510601512  |  Print ISBN13: 9781510601505
Description:

In this new edition of an SPIE bestseller, R. C. Olsen examines the definition and uses of remote sensing from a military perspective. The book discusses the instruments and principles that support a wide range of systems: optical, thermal, and radar. The text focuses on satellites-including power, data storage, and telemetry systems-because this knowledge is important for the development of new remote sensing systems. A new chapter dedicated to LiDAR develops the necessary physics for each domain and presents a few appropriate operational systems. A radiometry component has been added to the infrared (IR), radar (SAR), and LiDAR sections. Full-color images, as well as detailed examples and problems sets, make this a valuable textbook for students and engineers alike.

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Remote sensing is a field designed to enable people to look beyond the range of human vision. Whether it is over the horizon, beyond our limited range, or in a spectral range outside our perception, we are in search of information.1 The focus in this text will be on imaging systems of interest for strategic, tactical, and military applications, as well as information of interest to those domains.To begin, consider one of the first airborne remote-sensing images. Figure 1.1 shows a photograph by Gaspard-Félix Tournachon2 (Tournachon was also known by his pseudonym, Nadar). He took this aerial photo of Paris in 1868 from the Hippodrome Balloon, tethered 1700 feet above the city. Contrast this image with the photo taken by astronauts on Apollo 17, roughly one hundred years later (Fig. 1.2). Tournachon’s picture is a fairly classic remote-sensing image—a representation from a specific place and time of an area of interest. What sorts of things can be learned from such an image? Where, for instance, are the streets? What buildings are there? What are the purposes of those buildings? Which buildings are still there today? These are the elements of information that people want to extract from such imagery. The following material establishes a model for extracting information from remote-sensing data. The examples used here are also meant to illustrate the range of information that can be extracted from remote-sensing imagery, as well as some of the consequences of wavelength and resolution choices made with such systems.

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