Stephen J. Frasier
13 records found
1
Authored
A contrast-based phase calibration algorithm for digital beamforming remote sensing radars using three contrast metrics is presented. The algorithm corrects time-varying antenna array phase errors that defocus digital beamforming remote sensing radar imagery. Amplitude errors ...
A contrast-based phase calibration algorithm for digital-beamforming radars using three contrast metrics is presented. The performance of the algorithm is studied using a combination of simulated and real radar data. We find that the entropy metric yields the smallest calibrat ...
Phased-array design for biological clutter rejection
Simulation and experimental validation
For many years, spatial and temporal inhomogeneities in precipitation fields have been studied using scanning radars, cloud radars, and disdrometers, for example. Each measurement technique has its own advantages and disadvantages. Conventional profiling radars point verticall ...
The University of Massachusetts Microwave Remote Sensing Laboratory (MIRSL) has augmented the Turbulent Eddy Profiler (TEP) with an acoustic source to implement a Radio Acoustic Sounding System (RASS). TEP is a volume-imaging 915 MHz radar wind profiler. It can be thought of a ...
The Turbulent Eddy Profiler (TEP) is a volume-imaging 915 MHz radar designed for atmospheric boundary-layer turbulence studies. TEP is a pulsed, phased-array radar using digital beamforming techniques to provide four-dimensional images of refractive index fluctuations and wind ...