Microwave imaging is a promising alternative to conventional mammography methods. At microwave frequencies, normal and malignant tissues show high contrasts in their electrical properties. Microwave Imaging (MWI) systems can be used to construct three-dimensional profiles of the electrical properties of the body part that is being examined. MWI systems illuminate the body part with electromagne...

Microwave imaging for breast cancer detection has been of significant interest for the last two decades. Recent studies focus on solving the imaging problem using an inverse scattering approach. Efforts have mainly been focused on the development of the inverse scattering algorithms, experimental setup, antenna design and clinical trials. However, the success of microwave breast imaging also he...

The effect of antenna array size, transmit power, component noise and other parameters on the performance of microwave imaging algorithms is characterized, with the focus on indoor applications where objects are in the array nearfield. A large antenna array testbed was built to capture threedimensional images of objects in the 17-20GHz band, and the quality of these images evaluated. The standa...

Genetic algorithms, as kind of fast, simply and highly fault-tolerant algorithms for near-field microwave detection of breast cancer; are useful processing method. For the image has not been dealt with high demands, which can quickly detect the interested area, and by bypassing the nonline Inversion of the problem brought about difficulties. The article mechanism to the imaging reflecting from ...

Motivated by the critical need for complementary and/or alternative modalities to X-ray mammography for early stage breast cancer detection, we have proposed a method of ultrawideband microwave imaging for detecting backscattered energy from small malignant breast tumors. This thesis presents a detailed numerical and experimental investigation of the proposed microwave imaging system. In the pr...

A prototype imaging system for active microwave tomography using cylindrical geometry has been developed, making is possible to obtain images of the dielectric properties of biological targets at 2.45 GHz. The system requires no mechanical movements to illuminate the body from multiple directions (views) and measure the scattered fields. In this way a complete data set consisting in 64 views is...

Motivated by applications in microwave engineering and diffusion tensor imaging, we study the problem of deconvolution density estimation on the space of positive definite symmetric matrices. We develop a nonparametric estimator for the density function of a random sample of positive definite matrices. Our estimator is based on the Helgason-Fourier transform and its inversion, the natural tools...

Sea-ice freeboard heights for 17 ICESat campaign periods from 2003 to 2009 are derived from ICESat data. Freeboard is combined with snow depth from Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) data and nominal densities of snow, water and sea ice, to estimate sea-ice thickness. Sea-ice freeboard and thickness distributions show clear seasonal variations that reflec...

This note is intended to serve primarily as a reference guide to users wishing to make use of the Tropical Rainfall Measuring Mission data. It covers each of the three primary rainfall instruments: the passive microwave radiometer, the precipitation radar, and the Visible and Infrared Radiometer System on board the spacecraft. Radiometric characteristics, scanning geometry, calibration procedur...