کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
447758 1443191 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new Doppler ambiguity resolution technique for SAR data based on SPECAN processing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
A new Doppler ambiguity resolution technique for SAR data based on SPECAN processing
چکیده انگلیسی

In this paper, we describe an approach for Doppler ambiguity resolution. This approach adopts the fact that unwrapped Doppler centroid is a linear function of range frequency for a given antenna squint angle. On this basis, an alternative azimuth compression method is addressed and performed in range frequency domain to accumulate target energy in the azimuth direction. The resulting trajectories behave as some straight lines with the average slope proportional to absolute Doppler centroid. This slope can be well estimated by image-contrast methods. Theoretical analysis and real measured SAR data show that the proposed approach works well in high- and relatively low-contrast scenes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AEU - International Journal of Electronics and Communications - Volume 65, Issue 11, November 2011, Pages 906–914
نویسندگان
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