Radiometric Receiver for Passive Microwave Imaging System

Receiver Design for Passive Millimeter Wave (PMMW) Imaging

Passive Millimeter Wave (PMMW) sensors are used for remote sensing and security applications. They rely on radiometric receivers to sense very small power differences. The performance of radiometric receivers should be characterized in different ways than communications and radar receivers. In communications we typically think in terms of carrier-to-noise ratio (CNR) or signal-to-noise ratio (S...

Receiver Site Optimisation for Passive Coherent Location (PCL) Radar System

The Radar Remote Sensing Group in University of Cape Town has developed accurate modelling method that uses 3D maps of the Western Cape to predict the signal path loss between a transmitter, aircraft and a receiver in the Passive Coherent Location (PCL) system. The core objective of this thesis is to investigate the use of this modelling method to optimise the location of receivers in order to ...

Microwave Imaging Using SAR

Polarimetric Synthetic Aperture Radar (Pol.-SAR) allows us to implement the recognition and classification of radar targets. This article investigates the arrangement of scatterers by SAR data and proposes a new Look-up Table of Region (LTR). This look-up table is based on the combination of (entropy H/Anisotropy A) and (Anisotropy A/scattering mechanism α), which has not been reported up now. ...

Infrared and Passive Microwave Radiometric Sea Surface Temperatures and Their Relationships to Atmospheric Forcing

A Data Focusing method for Microwave Imaging of Extended Targets

This paper presents a data focusing method (DFM) to image extended targets using the multiple signal classification (MUSIC) algorithm. The restriction on the number of transmitter-receiver antennas in a microwave imaging system deteriorates profiling an extended target that comprises many point scatterers. Under such situation, the subspace-based linear inverse scattering methods, like the MUSI...