Engineering topics
Publications and source records attributed to Durden, S..
This paper presents the design and RF characterization of 94.1 GHz Cassegrain dual-reflector antenna for the proposed Cloud Profiling Radar (CPR) instrument.
Observations of Doppler velocity of hydrometeors form airborne Doppler weather radars normally contains a component due to the aircraft motion. Accurate hydrometeor velocity measurements thus require correction by subtracting this velocity from the observed velocity.
the Tropical Rainfall Measuring Mission (TRMM) will carry the first spaceborne radar for rainfall observation.
Classification, decomposition and modeling of polarimetric SAR data has received a great deal of attention in the recent literature. The objective behind these efforts is to better understand the scattering mechanisms which give rise to the polarimetric signatures seen in SAR image data.
The NASA/JPL Airborne Rain Mapping Radar (ARMAR) on board the NASA DC-8 aircraft, several airborne multi-channel radiometers on board the NASA ER-2 aircraft, and the doppler radars on board the NOAA P-3 aircraft were deployed for rainfall observations collected over the Western Pacific Ocean during the TOGA/COARE experiment in January and February of 1993. Results of rain system observations are given.
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NASA/JPL AIRSAR data were acquired over Minto Flats, Alaska on 18 July 1993. These data.
This paper addresses the problem of finding a parametric for for the rain drop size distribution which 1) is an appropriate model for tropical rainfall, and 2) involves statistically independent parameters.
It is easy to understand heuristically why single-frequency spaceborne radar measurements, by themselves, are not sufficient to solve the inverse problem of retrieving an exact underlying rain-rate profile.
This paper presents some crucial design parameters and a strawman system design for a nadir-looking 94-GHz spaceborne cloud profiling radar.
The NASA/JPL Airborne Rain Mapping Radar (ARMAR) was deployed for rainfall observations during TOGA/COARE on the NASA DC-8 aircraft. A total of approx. 30 hours of rain profiling measurements were collected over the Western Pacific Ocean during January and February 1993.
We describe a computationally efficient nearly-optimal Bayesian algorithm to estimate rain profiles, given a radar reflectivity profile at a single attenuating wavelength.
Wetlands are important for their role in global climate as a source of methane and other trace gasses.
An approach for reducing the ambiguity in the retrieved rainfall profile from spaceborne rain radar is to use the path integrated attenuation as a constraint.
Several algorithms to calculate a rain-rate profile from a single-frequency air- or space-borne radar backscatter profile and a given path-integrated attenuation have been proposed.
This paper substantiates earlier findings that radar measurements in the Oregon transect cannot be uniquely related to biomass, and that instead inversion algorithms should be used,.