The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
Tropospheric wind profiling using radar "Interferometry" (a feasibility study of a compact mobile system)
-
1990
[PDF-68.13 MB]
Details:
-
Personal Author:
-
Corporate Authors:
-
NOAA Program & Office:
-
Description:We compare the feasibility ofusing three-beam Doppler,spaced-antenna (SA), and Imaging Doppler Interferometer (IDI) techniques fortropospheric wind profiling at 400 MHz. The SA and IDI methods appear to be the most suited for a compact mobile system because narrowbeams and therefore large antennas are not required. The SA technique is a proven technology in the troposphere at 50 MHz. An extension to a 400 MHz system appearsto be straightforward. We expect that with the SA method 30-min averages of the wind from 0-10 km can be retrieved with an uncertainty of ±2 m/s. We find the IDI technique for measuring troposphericwinds at 400 MHz to be a particularly promising though yet unproven technology. Advantages include a potential capability of high resolution imaging ofthe wind field in the radar volume not attainable by the SA method. Disadvantages include the necessity for having several highly localized and persistent scattering centers in the volume, and the inherently low effective signal-to-noise ratios associated with the shorter dwell times needed to locate the scatterers, which results in higher power requirements. The ability of the IDI to detect these scatterers at 400 MHz in the troposphere has not been tested. Under ideal conditions, we expect uncertaintiesin the IDI wind estimates to be comparable to those obtained with the SA technique.
-
Keywords:
-
Series:
-
Document Type:
-
License:
-
Rights Information:CC0 Public Domain
-
Compliance:Library
-
Main Document Checksum:
-
Download URL:
-
File Type:
