Predicting Atmospheric Attenuation under Pristine Conditions between 0.1 and 100 THz

File Description SizeFormat 
07736955.pdfPublished version12.75 MBAdobe PDFDownload
Title: Predicting Atmospheric Attenuation under Pristine Conditions between 0.1 and 100 THz
Author(s): Sun, J
Hu, F
Lucyszyn, S
Item Type: Journal Article
Abstract: This multidisciplinary article reports on a research application-led study for predicting atmospheric attenuation, and tries to bridge the knowledge gap between applied engineering and atmospheric sciences. As a useful comparative baseline, the paper focuses specifically on atmospheric attenuation under pristine conditions, over the extended terahertz spectrum. Three well-known simulation software packages are compared and contrasted ('HITRAN on the Web', MODTRAN(RM)4 and LBLRTM). Techniques used for modeling atmospheric attenuation have been applied to investigate the resilience of (ultra-)wide fractional bandwidth applications ('THz Torch') to the effects of molecular absorption. Two extreme modeling scenarios are investigated: horizontal path links at sea level and Earth-space path links. It is shown by example that a basic software package ('HITRAN on the Web') can give good predictions with the former; whereas sophisticated simulation software (LBLRTM) is required for the latter. Finally, with molecular emission included, carrier-to-noise ratio fade margins can be calculated for the effects of line broadening due to changes in macroscopic atmospheric conditions with sub-1 THz ultra-narrow fractional bandwidth applications. Outdoors can be far from pristine, with additional atmospheric contributions only briefly introduced here; further discussion is beyond the scope of this study, but relevant references have been cited.
Publication Date: 7-Nov-2016
Date of Acceptance: 25-Oct-2016
URI: http://hdl.handle.net/10044/1/42355
DOI: https://dx.doi.org/10.1109/ACCESS.2016.2626200
Publisher: Institute of Electrical and Electronics Engineers
Start Page: 9377
End Page: 9399
Journal / Book Title: IEEE Access
Volume: 4
Copyright Statement: © 2016 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.
Sponsor/Funder: Medical Research Council (MRC)
Imperial College Healthcare NHS Trust- BRC Funding
Funder's Grant Number: MC_PC_14100
ICiC funding 2015/16
Keywords: Science & Technology
Technology
Computer Science, Information Systems
Engineering, Electrical & Electronic
Telecommunications
Computer Science
Engineering
THz
thermal infrared
atmospheric attenuation
transmittance
carrier-to-noise
molecular absorption
molecular emission
HITRAN
MODTRAN (R)
LBLRTM
THz Torch
WATER-VAPOR CONTINUUM
GAAS PHOTOCONDUCTIVE ANTENNA
TRANSFER MODEL LBLRTM
TERAHERTZ SPECTROSCOPY
ABSORPTION-COEFFICIENTS
WIRELESS COMMUNICATIONS
INFRARED CONTINUUM
ROOM-TEMPERATURE
SPECTRAL REGION
RADIATION
Publication Status: Published
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering



Items in Spiral are protected by copyright, with all rights reserved, unless otherwise indicated.

Creative Commons