نتایج جستجو برای: synthetic aperture radar

تعداد نتایج: 191587  

ژورنال: :مجله مهندسی برق دانشگاه تبریز 2015
منیره کوشش غلامرضا اکبری زاده

چکیده: تبدیل کرولت (curvelet)، نوع جدیدی از الگوریتم آنالیز چندمقیاسه بوده که برای پردازش تصاویر sar بسیار مناسب است. این تبدیل، جزو تبدیل­های هندسی محسوب می­شود که برای رفع مشکلات اساسی تبدیل­های ویولت (موجک) و گابور در تشخیص لبه­ها و منحنی­ها توسعه پیدا کرد. تبدیل curvelet را می­توان در جهت رسیدن به بخش­بندی بهتر و شناسایی اهداف در تصاویر ماهواره­ای sar با دقت بسیار بالا به کار برد. در این مق...

Journal: :journal of communication engineering 0
iman heidarpour shahrezaeri department of electrical and electronic engineering- malek ashtar university of technology morteza kazerooni department of electrical and electronic engineering- malek ashtar university of technology mohsen fallah department of electrical and electronic engineering- malek ashtar university of technology

design, simulation and optimal selection of cosine-linear frequency modulation waveform (cnlfm) based on correlated ambiguity function (af) method for the purpose of synthetic aperture radar (sar) is done in this article. the selected optimum cnlfm waveform in contribution with other waveforms are applied directly into a sar image formation algorithm (ifa) and their quality effects performance ...

2016
Anamika Sharma

It is a high-resolution radar imaging is interdisciplinary and has wide interests among many various areas.In it remote sensing, Synthetic Aperture Radar images are widely usually used to map the land of the terrain.in defense industry, it type of radar imaging of moving objects is an important tool for automatic target recognition. In this review paper, we provide a comprehensive review of rec...

Journal: :مهندسی فناوری اطلاعات مکانی 0
رضا شاه حسینی reza shah-hosseini مصطفی اسمعیلی mostafa esmaeili عبدارضا صفری abdoreza safari سعید همایونی said homayouni جلال امینی jalal amini حمید عزت آبادی پور hamid ezzatabadipour

coregistration of optical and radar imageries is a major pre-processing step in many remote sensing applications including change detection and interferometric processing. specially, the coregistration faced more difficulties in radar imageries due to the high noise level and intense spatial-temporal decorrelation. hence, non-automatic coregistration methods are much more time consuming and ine...

The main purpose of this paper is to develop the method of characteristic functions for calculating the detection characteristics in the case of the object surrounded by rough surfaces. This method is to be implemented in synthetic aperture radar (SAR) systems using optimal resolution algorithms. By applying the specified technique, the expressions have been obtained for the false alarm and cor...

By increasing the applicability of ground-based SAR (GBSAR) systems in geoscience and remote sensing, the development and evaluation of new systems have gained attention. GBSAR systems can be utilized for monitoring areas that are hard to or cannot be seen by the airborne or spaceborne systems. Furthermore, they have better spatial and temporal resolutions and are cost-effective and easy to imp...

Journal: :IEEE Journal of Selected Topics in Signal Processing 2010

Journal: :EURASIP Journal on Advances in Signal Processing 2006

Journal: :Remote sensing and digital image processing 2021

Demonstrates the benefits of usage fully polarimetric synthetic aperture radar data in applications Earth remote sensing, with educational and development purposes. Includes numerous up-to-date examples real from spaceborne platforms possibility to use a software support lecture practicals. Reviews theoretical principles an intuitive way for each application topic. Covers depth five domains (fo...

Journal: :EURASIP J. Adv. Sig. Proc. 2006
Marco Martorella John Homer James Palmer Victor Chen Fabrizio Berizzi Brad Littleton Ian Dennis Longstaff

1The school of ITEF, The University of Queensland, Brisbane 4072, Australia 2Department of Information Engineering, University of Pisa, Via G. Caruso 16, 56122 Pisa, Italy 3 School of Information Technology & Electrical Engineering, University of Queensland, Brisbane 4072, Australia 4Radar Modelling & Analysis Group, Electronic Warfare & Radar Division, Defence Science & Technology Organisation...

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