Man-Made Target Detection from Polarimetric SAR Data via Nonstationarity and Asymmetry
2016 (English)In: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, ISSN 1939-1404, E-ISSN 2151-1535, Vol. 9, no 4, 1459-1469 p., 7405260Article in journal (Refereed) PublishedText
Detection of man-made targets in urban areas using polarimetric synthetic aperture radar (PolSAR) data has become a promising research area since it has a close relationship with urban planning, rescue service, etc. This paper presents an improved man-made target detection method for PolSAR data based on nonstationarity and asymmetry. Nonstationarity in azimuth direction is already utilized to separate man-made and natural targets in urban areas. However, there are still some drawbacks. Some small man-made targets and roads cannot be effectively detected. In addition, nonstationarity can also occur in some other natural surfaces, such as cropland with Bragg resonance. Therefore, to resolve these problems, we incorporate reflection asymmetry into the azimuth nonstationarity extraction method to improve the man-made target detection accuracy, i.e., removing the natural areas and detecting the small targets. Airborne ESAR data and spaceborne PALSAR data are used to validate the performance of the proposed method. The result obtained by our proposed method shows a 20% higher accuracy than the result based on original nonstationarity extraction method. Natural areas with Bragg resonance are removed. Moreover, most of the buildings and some metallic fences along the road can also be accurately detected.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2016. Vol. 9, no 4, 1459-1469 p., 7405260
Man-made target detection, nonstationarity, polarimetric SAR (PolSAR), reflection asymmetry
IdentifiersURN: urn:nbn:se:kth:diva-187179DOI: 10.1109/JSTARS.2016.2520518ISI: 000375868800011ScopusID: 2-s2.0-84959153263OAI: oai:DiVA.org:kth-187179DiVA: diva2:929339
QC 201605182016-05-182016-05-182016-06-08Bibliographically approved