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Automatic tuning of Bragg condition in a radio-acoustic system for PBL temperature profile measurement

Journal Article:

Abstract

A Radio-Acoustic Sounding System (RASS) with acoustic wavelength lambda/sub a/ approx. 1m was designed and successfully tested. The system proved to be capable of measuring the vertical temperature profile in the Planetary Boundary Layer (PBL) with an accuracy and vertical resolution comparable to that of traditional apparatus (radiothermosondes borne by tethered or disposable balloons, thermosondes borne by aircraft and so on), yet combined with the advantages typical of remote sensing techniques. Up to the summer of 1983 the system needed attendance by an operator who had to identify the acoustic sounding frequency affording the fundamental condition of Bragg resonance between acoustic and radio wavelengths. Features and performance of the new completely automatic RASS arrangement are presented. These include the possibility of obtaining average thermal vertical profiles at preset time intervals. Maximum range of the possibility of obtaining average thermal vertical profiles at preset time intervals. Maximum range of measurements obtained in about 1000 1/2-h averages was: in 90% of cases greater than or equal to 600 m; in 50% of cases greater than or equal to 1100m. Such results indicate the usefulness of automatic RASS as a tool for meteorological purposes and for the application of air pollution control strategies.
Publication Date:
Jan 01, 1985
Product Type:
Journal Article
Reference Number:
EDB-85-166961
Resource Relation:
Journal Name: Atmos. Environ.; (United Kingdom); Journal Volume: 19:6
Subject:
54 ENVIRONMENTAL SCIENCES; ACOUSTIC RADAR; PERFORMANCE TESTING; TEMPERATURE GRADIENTS; REMOTE SENSING; AIR POLLUTION; AIR POLLUTION CONTROL; AIR QUALITY; BOUNDARY LAYERS; DESIGN; EXPERIMENTAL DATA; GEOPHYSICS; MEASURING METHODS; METEOROLOGY; CONTROL; DATA; ENVIRONMENTAL QUALITY; INFORMATION; LAYERS; MEASURING INSTRUMENTS; NUMERICAL DATA; POLLUTION; POLLUTION CONTROL; RADAR; RANGE FINDERS; TESTING; 500200* - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)
OSTI ID:
5182636
Research Organizations:
Universita, Torino, Italy
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: ATENB
Submitting Site:
HEDB
Size:
Pages: 973-978
Announcement Date:

Journal Article:

Citation Formats

Bonino, G, and Trivero, P. Automatic tuning of Bragg condition in a radio-acoustic system for PBL temperature profile measurement. United Kingdom: N. p., 1985. Web.
Bonino, G, & Trivero, P. Automatic tuning of Bragg condition in a radio-acoustic system for PBL temperature profile measurement. United Kingdom.
Bonino, G, and Trivero, P. 1985. "Automatic tuning of Bragg condition in a radio-acoustic system for PBL temperature profile measurement." United Kingdom.
@misc{etde_5182636,
title = {Automatic tuning of Bragg condition in a radio-acoustic system for PBL temperature profile measurement}
author = {Bonino, G, and Trivero, P}
abstractNote = {A Radio-Acoustic Sounding System (RASS) with acoustic wavelength lambda/sub a/ approx. 1m was designed and successfully tested. The system proved to be capable of measuring the vertical temperature profile in the Planetary Boundary Layer (PBL) with an accuracy and vertical resolution comparable to that of traditional apparatus (radiothermosondes borne by tethered or disposable balloons, thermosondes borne by aircraft and so on), yet combined with the advantages typical of remote sensing techniques. Up to the summer of 1983 the system needed attendance by an operator who had to identify the acoustic sounding frequency affording the fundamental condition of Bragg resonance between acoustic and radio wavelengths. Features and performance of the new completely automatic RASS arrangement are presented. These include the possibility of obtaining average thermal vertical profiles at preset time intervals. Maximum range of the possibility of obtaining average thermal vertical profiles at preset time intervals. Maximum range of measurements obtained in about 1000 1/2-h averages was: in 90% of cases greater than or equal to 600 m; in 50% of cases greater than or equal to 1100m. Such results indicate the usefulness of automatic RASS as a tool for meteorological purposes and for the application of air pollution control strategies.}
journal = {Atmos. Environ.; (United Kingdom)}
volume = {19:6}
journal type = {AC}
place = {United Kingdom}
year = {1985}
month = {Jan}
}