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Discussion of the Direct Detection Rx-power Distribution as derived from Intensity Statistics and Comparision with Measurements

Perlot, Nicolas und Giggenbach, Dirk und Bischl, Hermann und David, Florian (2003) Discussion of the Direct Detection Rx-power Distribution as derived from Intensity Statistics and Comparision with Measurements. In: Proceedinges of the SPIE, Vol. 4976. LASE 2003, Atmospheric Propagation , San Jose, California, USA, 25�31 January 2003, San Jose, California (USA).

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Kurzfassung

The intensity of a laser beam after propagation through turbulent media such as the atmosphere may follow different probability density functions (PDFs) depending on the fluctuation regime. For non-coherent receivers the aperture averaging effect reduces the power scintillation leading to a different PDF. Since the analytical approach of deriving the received power PDF knowing the joint-PDF of the intensity at more than just a few points becomes rapidly complex, we review here a much more simplified approach as well as a simulative approach. Both approaches are based on the results of scintillation theory. First, starting from the PDF of the intensity and its spatial correlation, aperture sub-areas can be defined over which the intensity is assumed equal and independent from other sub-areas' intensity. Under those conditions the power PDF is easily worked out. The validity of this method is evaluated according to the level of spatial correlation of the intensity. In a second method, intensity variables are sampled from the Rx-aperture and an approximation of the power PDF is obtained by generating multivariate correlated intensity values. Weak and strong fluctuation regimes are treated separately and the effects of different resolution of the input-intensity-field are discussed. In addition, this paper compares the predicted power characteristics to those deduced from experimental data where the intensity characteristics (PDF, spatial correlation) have been evaluated.

Dokumentart:Konferenzbeitrag (Paper)
Zusätzliche Informationen:LIDO-Berichtsjahr=2003,
Titel:Discussion of the Direct Detection Rx-power Distribution as derived from Intensity Statistics and Comparision with Measurements
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Perlot, NicolasNICHT SPEZIFIZIERT
Giggenbach, DirkNICHT SPEZIFIZIERT
Bischl, HermannNICHT SPEZIFIZIERT
David, FlorianNICHT SPEZIFIZIERT
Datum:2003
Erschienen in:Proceedinges of the SPIE, Vol. 4976
Referierte Publikation:Ja
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Optical Free Space Transmission, Direct Detection, Rx-Power Distribution, Intensity Statistics
Veranstaltungstitel:LASE 2003, Atmospheric Propagation , San Jose, California, USA, 25�31 January 2003
Veranstaltungsort:San Jose, California (USA)
Veranstaltungsart:internationale Konferenz
Veranstalter :SPIE - The International Society of Optical Engineering
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W KN - Kommunikation/Navigation
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W KN - Kommunikation/Navigation
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Multimedia Satellitennetze (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Digitale Netze
Hinterlegt von: Dr.-Ing. Dirk Giggenbach
Hinterlegt am:10 Aug 2006
Letzte Änderung:12 Dez 2013 19:58

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