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Detection and modeling of the acoustic perturbation produced by the launch of the Space Shuttle using the Global Positioning System

Bowling, T.J. und Calais, Eric und Dautermann, Thomas (2010) Detection and modeling of the acoustic perturbation produced by the launch of the Space Shuttle using the Global Positioning System. In: EOS Trans AGU. 2010 Fall Meeting of the American Geophysical Union, San Francisco.

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Offizielle URL: http://www.agu.org

Kurzfassung

AF: Institute for Communication and Navigation, German Aerospace Center, Oberpfaffenhofen, Germany AB: Rocket launches are known to produce infrasonic pressure waves that propagate into the ionosphere where coupling between electrons and neutral particles induces fluctuations in ionospheric electron density observable in GPS measurements. We have detected ionospheric perturbations following the launch of space shuttle Atlantis on 11 May 2009 using an array of continually operating GPS stations across the Southeastern coast of the United States and in the Caribbean. Detections are prominent to the south of the westward shuttle trajectory in the area of maximum coupling between the acoustic wave and Earth’s magnetic field, move at speeds consistent with the speed of sound, and show coherency between stations covering a large geographic range. We model the perturbation as an explosive source located at the point of closest approach between the shuttle path and each sub-ionospheric point. The neutral pressure wave is propagated using ray tracing, resultant changes in electron density are calculated at points of intersection between rays and satellite-to-reciever line-of-sight, and synthetic integrated electron content values are derived. Arrival times of the observed and synthesized waveforms match closely, with discrepancies related to errors in the apriori sound speed model used for ray tracing. Current work includes the estimation of source location and energy.

Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Detection and modeling of the acoustic perturbation produced by the launch of the Space Shuttle using the Global Positioning System
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Bowling, T.J.Purdue University
Calais, EricPurdue University
Dautermann, ThomasThomas.Dautermann@dlr.de
Datum:13 Dezember 2010
Erschienen in:EOS Trans AGU
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:DE: [1220] GEODESY AND GRAVITY / Atmosphere monitoring with geodetic techniques DE: [2487] IONOSPHERE / Wave propagation DE: [6929] RADIO SCIENCE / Ionospheric physics DE: [6969] RADIO SCIENCE / Remote sensing SC: SPA-Aeronomy (SA) MN: 2010 Fall Meeting
Veranstaltungstitel:2010 Fall Meeting of the American Geophysical Union
Veranstaltungsort:San Francisco
Veranstaltungsart:internationale Konferenz
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W - keine Zuordnung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):W -- keine Zuordnung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation
Institut für Kommunikation und Navigation > Navigation
Hinterlegt von: Dr. Thomas Dautermann
Hinterlegt am:10 Jan 2011 08:27
Letzte Änderung:10 Jan 2011 08:27

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