نتایج جستجو برای: تناظریابی تصاویر sar

تعداد نتایج: 32922  

2017
Myung-Ha Song Ye-Rin Kim Jae-Ho Bae Chang-Hun Lee Sang-Yull Lee

NY-SAR-35 is a cancer/testis (CT) antigen that was identified by serological analysis of recombinant complementary DNA expression libraries. The gene encoding NY-SAR-35 is located on the × chromosome and is aberrantly expressed in a number of cancer types and germ cells, such as those in the testes, but not in normal tissue. It has been reported that treatment with a demethylating agent induced...

ژورنال: :علوم و فنون نقشه برداری 0
محسن قنبری m. ghanbari department of geodesy and geomaticsدانشکده مهندسی نقشه برداری وحید اکبری v. akbari uit- the arctic university of norway, tromsø, norwayدانشکده فیزیک و تکنولوژی- uit-the arctic university of norway- نروژ علی اکبر آبکار a. a. abkar k.n.toosi university of technologyدانشگاه خواجه نصیرالدین طوسی محمودرضا صاحبی m. r. sahebi k.n.toosi university of technologyدانشگاه خواجه نصیرالدین طوسی

در این مقاله، یک روش نظارت نشده برای آشکارسازی تغییرات با استفاده از تصاویر پلاریمتری رادار با روزنه ترکیبی ارائه گردیده است. آماره آزمون ویشارت تصحیح یافته متقارن، به منظور ارزیابی برابری دو ماتریس کواریانس چندمنظر مربوط به دو تصویر پلاریمتری sar در دو زمان مختلف بکار گرفته شده تا تصویر تک باندی خروجی آن در یک الگوریتم نظارت نشده حد آستانه گذاری قرار گیرد و در نهایت نقشه تغییر/عدم تغییر بدست آ...

Journal: :رادار 0
محسن جعفری صفا خزایی

in recent years, synthetic aperture radar (sar) images have played an important role in the detection and monitoring of ground targets because of their advantages such as independence from climatic conditions and sensitivity to the target geometry. the complexity of sar imaging sensors, especially in the conversion process from raw data to image, has made it difficult to interpret the behavior ...

B. Zakeri I. Kalantari

Polarimetric Synthetic Aperture Radar (Pol.-SAR) allows us to implement the recognition and classification of radar targets. This article investigates the arrangement of scatterers by SAR data and proposes a new Look-up Table of Region (LTR). This look-up table is based on the combination of (entropy H/Anisotropy A) and (Anisotropy A/scattering mechanism α), which has not been reported up now. ...

Journal: :IEICE Transactions 2010
Tomohiko Ogawa Haruo Kobayashi Yosuke Takahashi Nobukazu Takai Masao Hotta Hao San Tatsuji Matsuura Akira Abe Katsuyoshi Yagi Toshihiko Mori

This paper describes an algorithm for Successive Approximation Register (SAR) ADCs with overlapping steps that allow comparison decision errors (due to, such as DAC incomplete settling) to be digitally corrected. We generalize this non-binary search algorithm, and clarify which decision errors it can digitally correct. This algorithm requires more SAR ADC conversion steps than a binary search a...

2015
Mohamed Elhefnawy Widad Ismail

The present research is an introductory paper on Synthetic Aperture Radar (SAR) systems. A review on topics and techniques related to the longrange and shortrange SAR systems are presented. The longrange SAR image is constructed using RangeDoppler Algorithm (RDA); while the RangeMigration Algorithm (RMA) is implemented with shortrange SAR for image formation. The simulation results indica...

1997
Tom Logan

Researchers at the Alaska SAR Facility (ASF) have developed a hybrid package of YMP and T3D based SAR processing algorithms using the Arctic Region Supercomputing Center (ARSC). The capabilities include; radiometric calibration, low-pass filtering, creation of simulated SAR images, image-to-image correlation, terrain correction, incidence angle normalization, and large scale mosaicking. Using t...

2011
Satoshi Hisanaga Koji Wakimoto Koji Okamura

It is possible to interpret the shape of buildings based on synthetic aperture radar (SAR) images acquired using airborne SAR systems. However, the pixel values of SAR images have high dynamic range intensity, and SAR images are not displayable without dynamic range intensity compression. We therefore have developed a dynamic range intensity compression method suitable for SAR image features. U...

Journal: :Infection and immunity 1997
A L Cheung K Eberhardt J H Heinrichs

The synthesis of protein A in Staphylococcus aureus is regulated by global regulatory loci such as sar and agr. Phenotypic data indicate that both sar and agr suppress protein A synthesis; like agr, sar also regulates protein A production at the transcriptional level. To determine the genetic requirement of sar in protein A suppression, we transformed shuttle plasmids containing various sar fra...

ژورنال: :نشریه دانشکده فنی 2003
لیلا هاشمی بنی علی عزیزی محمدحسن هاشمی بنی فرهاد صمدزادگان

تکنیک(sfs)،از جمله روشهایی است که جهت تولید dtm از مناطق با texture ضعیف،مطرح میباشد که با در نظر گرفتن ارتباط درجات خاکستری تصویر،توپوگرافی سطح زمین و جهت تابش نور،امکان بازسازی dtmاز یک تصویر را امکان پذیر میسازد. در این تحقیق،جهت پیاده سازی این الگوریتم براساس مدل لامبرتین از دو نوع داده،شبیه سازی شده و واقعی،استفاده شده است. مدل رقومی زمین برای تصویر شبیه سازی شده از یک سطحbilinear با دقت ...

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