National Research Foundation. Abstract A newly developed test statistic for equality of two complex covariance matrices following the complex Wishart distribution and an associated asymptotic probability for the test statistic has been used in a segmentation algorithm. The segmentation algorithm is based on the MUM (Merge Using Moments) approach, which is a merging algorithm for single channel ...

In this paper, a fully polarimetric time-frequency analysis method is introduced to decompose synthesized polarimetric and interferometric SAR images into range-frequency and azimuth-frequency domain. This 4-D representation permits to characterize the frequency response of the scene reflectivity, observed under different azimuth look-angles. A statistical analysis of polarimetric parameters pe...

The paper presents a new form of polarimetric interferometric information visualization: polarimetric coherence signatures. These signatures combine the idea of conventional polarization signatures and the concept of interferometric coherence. The polarimetric coherence signature plot shows the magnitude of the interferometric coherence as a function of the polarization ellipse parameters (elli...

The Naval Research Laboratory has recently begun a new basic research program designed to lay the foundation for future Navy applications of high-resolution polarimetric and polarimetric-interferometric radar systems. Despite many years of research, there is a serious lack of high-resolution, polarimetric ocean backscatter data in the radar community from which to fuel advanced applications, su...

This paper proposed a method of unsupervised classification of polarimetric SAR data based on image clustering and H/A/α decomposition. Fully polarimetric L band data collected by ALOS PALSAR system was used in this paper. The study site locates in Tianjin, China. The area is characterized by rural residence, bare soil, water body and pond. An unsupervised classification method is proposed for ...

We develop a method for obtaining 3D polarimetric integral images from elemental images recorded in low light illumination conditions. Since photon-counting images are very sparse, calculation of the Stokes parameters and the degree of polarization should be handled carefully. In our approach, polarimetric 3D integral images are generated using the Maximum Likelihood Estimation and subsequently...

This paper presents a verification processor, developed under ESA contract, for the generation of polarimetric, interferometric and polarimetric-interferometric geocoded products derived from SAR data obtained from the ALOS PALSAR instrument. The processor, developed with a modular approach, contains the following main elements: Phase-preserving fine resolution processor; Phase-preserving ScanS...

Different decomposition approaches have been proposed in order to analyse and interpret SAR polarimetric images. These are based either on the complex voltage reflection matrix, like Pauli, or on power reflection matrix, like the covariance or coherency matrix. They produce polarimetric parameters which are appropriate to retrieve information on the scattering process of the target. If the targ...

We report an experimental implementation of long-range polarimetric imaging through fog over kilometric distance in real field atmospheric conditions. An incoherent polarized light source settled on a telecommunication tower is imaged at a distance of 1.3 km with a snapshot polarimetric camera including a birefringent Wollaston prism, allowing simultaneous acquisition of two images along orthog...

Radar backscattering properties can be extremely sensitive to the freeze/thaw states of the ground surface. This study aims to evaluate the changes of L-band microwave scattering characteristics between thawed and frozen conditions by using polarimetric scattering mechanism indicators. ALOS PALSAR polarimetric mode data acquired in winter and spring seasons over Eastern Siberia are used in this...