elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Tropospheric-Propagation induced Distortion of Wideband Signals

Chandra, Madhukar and Danklmayer, Andreas (2011) Tropospheric-Propagation induced Distortion of Wideband Signals. In: Proceedings of the International Conference on Electromagnetics and Advanced Applications (ICEAA). International Conference on Electromagnetics and Advanced Applications (ICEAA), 2011-09-12 - 2011-09-17, Torino, Italy.

Full text not available from this repository.

Abstract

Wideband signals are already playing an important role in telecommunications and radar remote sensing. In telecommunication applications, large-bandwidth signals are required for generating high channel capacity and data-transfer rates. In radar-imaging applications, large bandwidths are required for obtaining higher spatial resolution, for instance. The well known benefits of wideband signals, however, are available only under the premise that the free-space propagation effects do not distort or impair the amplitude and phase composition of the different frequency components contained in such signals. Indeed, the so-called free-space is, however, often filled with precipitation media, such as rain. Contrary to popular belief, such media are entirely capable of generating dispersion by causing unequal attenuation and phase-shift of the different frequency components present in the wideband signal. In this contribution, we shall report investigations in this regard. More precisely, using an appropriate scattering model of rain media, we shall, in the first step, quantify the frequency dependent amplitude extinction and phase-shift in rain media for different frequencies in the range of 1-60 GHz. In the second step, we shall use this information to quantify the distortion of wideband signals with different centre carrier frequencies and different modulation depths. Also, the results will be used to construct the ‘channel impulse response’ appropriate for different rain media that are likely to occur in reality. In this contribution, for brevity and accuracy of scattering calculations, the polarization dependence of rain media will not be considered. The results should enable the radar engineer and the telecommunication engineer to estimate the degree of tropospheric-propagation induced distortion of wideband signals both in the frequency domain and the time domain.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Tropospheric-Propagation induced Distortion of Wideband Signals
Authors:
AuthorsInstitution or Email of Authors
Chandra, MadhukarChemnitz University of Technology
Danklmayer, AndreasUNSPECIFIED
Date:September 2011
Journal or Publication Title:Proceedings of the International Conference on Electromagnetics and Advanced Applications (ICEAA)
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Wideband Signals, Propagation distortions, radar remote sensing
Event Title:International Conference on Electromagnetics and Advanced Applications (ICEAA)
Event Location:Torino, Italy
Event Type:international Conference
Event Dates:2011-09-12 - 2011-09-17
Organizer:Politecnico di Torino, Istituto Superiore Mario Boella, Torino Wireless Foundation with Sponsorship of IEEE
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben SAR-Expert-Support-Lab (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Dr.-Ing. Andreas Danklmayer
Deposited On:21 Apr 2011 09:27
Last Modified:22 Dec 2011 23:45

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.