Change Detection Method for Wavelength- Resolution SAR Images Based on Bayes' Theorem: An Iterative Approach
Artikel i vetenskaplig tidskrift, 2023

This paper presents an iterative change detection (CD) method based on Bayes' theorem for very high-frequency (VHF) ultra-wideband (UWB) SAR images considering commonly used clutter-plus-noise statistical models. The proposed detection technique uses the information of the detected changes to iteratively update the data and distribution information, obtaining more accurate clutter-plus-noise statistics resulting in false alarm reduction. The Bivariate Rayleigh and Bivariate Gaussian distributions are investigated as candidates to model the clutter-plus-noise, and the Anderson-Darling goodness-of-fit test is used to investigate three scenarios of interest. Different aspects related to the distributions are discussed, the observed mismatches are analyzed, and the impact of the distribution chosen for the proposed iterative change detection method is analyzed. Finally, the proposed iterative method performance is assessed in terms of the probability of detection and false alarm rate and compared with other competitive solutions. The experimental evaluation uses data from real measurements obtained using the CARABAS II SAR system. Results show that the proposed iterative CD algorithm performs better than the other methods.



Data models

Radar polarimetry


Iterative methods


Bayes' theorem

Stability analysis

Gaussian distribution

wavelength-resolution SAR images

iterative change detection


Dimas Irion Alves

Instituto Tecnológico de Aeronáutica (ITA)

Bruna Gregory Palm

Blekinge Tekniska Högskola

Hans Hellsten

Högskolan i Halmstad

Renato Machado

Instituto Tecnológico de Aeronáutica (ITA)

Viet Thuy Vu

Blekinge Tekniska Högskola

Mats I. Pettersson

Blekinge Tekniska Högskola

Patrik Dammert

Chalmers, Elektroteknik, Signalbehandling och medicinsk teknik

IEEE Access

2169-3536 (ISSN) 21693536 (eISSN)

Vol. 11 84734-84743


Sannolikhetsteori och statistik

Annan elektroteknik och elektronik



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