دانلود مقاله ISI انگلیسی شماره 81311
ترجمه فارسی عنوان مقاله

پردازش تصویر مورفولوژیکی برای تشخیص منبع FM و محلی سازی

عنوان انگلیسی
Morphological image processing for FM source detection and localization
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
81311 2009 11 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Signal Processing, Volume 89, Issue 6, June 2009, Pages 1070–1080

ترجمه کلمات کلیدی
تجزیه و تحلیل زمان-فرکانس؛ جهت برآورد ورود - پردازش تصویر؛ خود راه انداز
کلمات کلیدی انگلیسی
Time–frequency analysis; Direction of arrival estimation; Image processing; Bootstrap
پیش نمایش مقاله
پیش نمایش مقاله  پردازش تصویر مورفولوژیکی برای تشخیص منبع FM و محلی سازی

چکیده انگلیسی

We consider the problem of direction finding for frequency modulated signals impinging on an array of sensors. Making use of a time–frequency representation of the data, we are able to exploit the non-stationary nature of the source signals. We employ morphological image processing to estimate time–frequency signature segments of each source. For the direction finding we apply beamforming techniques on averaged spatial time–frequency distribution matrices. When they occur, overlapping segments are splitted and re-combined after direction finding. The re-combination of segments is based on a bootstrap test, which resamples time–frequency auto-term locations. The proposed method also allows direction finding for the underdetermined case, i.e. when there are more sources than the number of array sensors. Furthermore, it detects the number of sources present, and the detector performance is compared to information based criteria.