نتایج جستجو برای: تصویر landsat 8
تعداد نتایج: 677953 فیلتر نتایج به سال:
.................................................................................................................... iv Introduction ................................................................................................................. 1 Background and Study Area ....................................................................................... 2 Methods ...........................
مطالعه حاضر در سه بخش، با هدف بررسی تغییرات و تحولات پوشش اراضی، شناسایی و طبقهبندی خاکها و ارزیابی کیفی تناسب اراضی منطقه اردستان برای دو محصول مهم منطقه (یونجه و جو) با استفاده از روشهای فائو (محدودیت ساده و پارامتریک) و تکنیکهای تصمیمگیری چندمعیاری (ahp و fuzzzy ahp) و همچنین مقایسه کارایی روشهای مبتنی بر منطق بولین و فازی صورت گرفت. به منظور بررسی روند تخریب اراضی منطقه در طی سه دهه ...
Spatiotemporal quantification of surface water and flooding is essential given that floods are among the largest natural hazards. Effective disaster response management requires near real-time information on flood extent. Satellite remote sensing only way monitoring these dynamics across vast areas over time. Previous mapping efforts have relied optical time series, despite cloud contamination....
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...
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...
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...
در بررسیهای فونستیک سال 2011 دامنه جنوبی رشته کوههای زاگرس ایران، یک نمونه ماده از گونه Amphipyra kautti Hacker, 2002 متعلق به خانواده Noctuidae و زیرخانواده Amphipyrinae مناطق کوهستانی استان کهگیلویه بویراحمد جمع آوری شناسایی شد. این که برای اولین بار ایران گزارش میشود، همراه با ویژگیهای افتراقی، تصویر الگوی بال اندام تناسلی شده ارائه است. اطلاعات مربوط دیگر همین جنس مطالعه نیز
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...
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...
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