Autopsy of unmanned airship television broadcast

Author

Gray, D. ; Nagatsuka, M. ; Miura, R.

Author_Institution

Yokosuka Radio Commun. Res. Centre, NICT, Yokosuka

fYear

2006

fDate

9-14 July 2006

Firstpage

2377

Lastpage

2380

Abstract

A number of telecommunications experiments were flown on an autonomous, 68 metre non-rigid airship in November 2004 as part of a national R&D project for stratospheric platform systems. Although the digital television broadcast experiment was successful, it was found that the signal was occasionally entirely lost when the airship passed directly over one receiving station. A quarter wavelength monopole on a simple model of the airship gondola was studied using a commercially available MOM software. Conclusions were drawn about the effects of various gondola features upon the radiation pattern of the monopole, and recommendations are made for future gondola design

Keywords

aircraft; antenna radiation patterns; high altitude stratospheric platforms; method of moments; monopole antennas; television broadcasting; MOM software; airship gondola; gondola design; national R&D project; nonrigid airship; quarter wavelength monopole; radiation pattern; receiving station; stratospheric platform systems; telecommunications experiments; unmanned airship television broadcast; Antenna radiation patterns; Autopsy; Bars; Digital TV; Helical antennas; Message-oriented middleware; Polarization; Radio broadcasting; TV broadcasting; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium 2006, IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

1-4244-0123-2

Type

conf

DOI

10.1109/APS.2006.1711072

Filename

1711072