نتایج جستجو برای: landsat 8

تعداد نتایج: 661911  

Journal: :Remote Sensing 2014
Matthew Montanaro Allen Lunsford Zelalem Tesfaye Brian Wenny Dennis Reuter

The science-focused mission of the Landsat 8 Thermal Infrared Sensor (TIRS) requires that it have an accurate radiometric calibration. A calibration methodology was developed to convert the raw output from the instrument into an accurate at-aperture radiance. The methodology is based on measurements obtained during component-level and instrument-level characterization testing. The radiometric a...

2014
Bryan A. Franz Sean W. Bailey Norman Kuring P. Jeremy Werdell

The Operational Land Imager (OLI) is a multi-spectral radiometer hosted on the recently launched Landsat-8 satellite. OLI includes a suite of relatively narrow spectral bands at 30-meter spatial resolution in the visible to shortwave infrared that make it a potential tool for ocean color radiometry: measurement of the reflected spectral radiance upwelling from beneath the ocean surface that car...

Journal: :Journal of remote sensing 2023

Satellites have provided high-resolution ( < 100 m) water color (i.e., remote sensing reflectance) and thermal emission imagery of aquatic environments since the early 1980s; however, global operational quality products based on these data are not readily available (e.g., temperature, chlorophyll- a , turbidity, suspended particle matter). Currently, because postprocessing required, only use...

2016
Tri Dev Acharya Dong Ha Lee In Tae Yang Jae Kang Lee

Water bodies are essential to humans and other forms of life. Identification of water bodies can be useful in various ways, including estimation of water availability, demarcation of flooded regions, change detection, and so on. In past decades, Landsat satellite sensors have been used for land use classification and water body identification. Due to the introduction of a New Operational Land I...

Journal: :Remote Sensing 2015
Manuel A. Aguilar Andrea Vallario Fernando J. Aguilar Andrés García Lorca Claudio Parente

Greenhouse detection and mapping via remote sensing is a complex task, which has already been addressed in numerous studies. In this research, the innovative goal relies on the identification of greenhouse horticultural crops that were growing under plastic coverings on 30 September 2013. To this end, object-based image analysis (OBIA) and a decision tree classifier (DT) were applied to a set c...

Journal: :Remote Sensing 2015
Alyssa K. Whitcraft Inbal Becker-Reshef Brian D. Killough Christopher O. Justice

Agriculture is a highly dynamic process in space and time, with many applications requiring data with both a relatively high temporal resolution (at least every 8 days) and fine-to-moderate (FTM < 100 m) spatial resolution. The relatively infrequent revisit of FTM optical satellite observatories coupled with the impacts of cloud occultation have translated into a barrier for the derivation of a...

Journal: :Remote Sensing Applications: Society and Environment 2021

Over Himalayas, the detection of seasonal snow cover variations via remote sensing is challenging due to presence rugged terrain and shadow effects. Moreover, traditional per-pixel-based change methods less competent identify inner-pixel subtle with coarse resolution satellite imagery. In present work, we have proposed subpixel-based (SCD) algorithm examine impact topographic correction (TC) on...

Journal: :Remote Sensing 2015
Dennis C. Reuter Cathleen M. Richardson Fernando A. Pellerano James R. Irons Richard G. Allen Martha Anderson Murzy D. Jhabvala Allen W. Lunsford Matthew Montanaro Ramsey L. Smith Zelalem Tesfaye Kurtis J. Thome

The Thermal Infrared Sensor (TIRS) on Landsat 8 is the latest thermal sensor in that series of missions. Unlike the previous single-channel sensors, TIRS uses two channels to cover the 10–12.5 micron band. It is also a pushbroom imager; a departure from the previous whiskbroom approach. Nevertheless, the instrument requirements are defined such that data continuity is maintained. This paper des...

ژورنال: علوم آب و خاک 2017

A limited number of agricultural weather stations measure moisture in the soil surface. Furthermore, soil moisture information may be required in areas where there is no weather station. The aim of the present study was to use Landsat 8 satellite images to estimate soil surface moisture in an area without agricultural meteorological stations. Gravimetric soil moisture for a total of 14 samples ...

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