Brightness-Temperature Retrieval Methods in Synthetic Aperture Radiometers

A Compressive Sensing Approach for Synthetic Aperture Imaging Radiometers

The aperture synthesis technology represents a promising new approach to microwave radiometers for high-resolution observations of the Earth from geostationary orbit. However, the future application of the new technology may be limited by its large number of antennas, receivers, and correlators. In order to reduce significantly the complexity of the on-board hardware requirements, a novel metho...

Antenna Array Design in Aperture Synthesis Radiometers 169 Antenna Array Design in Aperture Synthesis Radiometers

During the past few decades, there has been growing interest in the use of microwave and millimeter wave radiometers for remote sensing of the Earth. Due to the need of large antennas and scanning mechanism, the conventional real aperture radiometer becomes infeasible for high spatial resolution application. Interferometric aperture synthesis was suggested as an alternative to real aperture rad...

A Review of the Three-dimensional Field Displacement Retrieval Methods Using Interferometric Synthetic Aperture Radar Observations (InSAR) With Emphasis on the Precision of Each of these Methods

Interferometric Synthetic Aperture Radar (InSAR) technology provides a useful tool for quantitatively measuring the deformation of the earth, influenced by natural factors (earthquake, subsidence, and landslide) and human factors (construction of structures, drilling, and the overexploitation of underground water aquifers). In this context, time-series analysis of radar images allows the monito...

Compensation of elevation angle variations in polarimetric brightness temperature measurements from airborne microwave radiometers

This paper presents a method for compensating the elevation angle fluctuations occurring in airborne radiometry due to aircraft roll and pitch. The correction is based on a radiative transfer model, and is demonstrated by real data from conical scans over the ocean, showing good results.

Synthetic Aperture Methods for Medical Ultrasonic Imaging