On the feasibility of microwave produced Bragg reflector for the OTH radar application

Spencer Kuo, Y. S. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Summary form only given. A series of chamber experiments was conducted to investigate three major issues concerning the feasibility of using microwave-produced atmospheric plasma layers as a supplemental reflector for the OTH radar. These include (1) the effectiveness of the plasma layers as a Bragg reflector, (2) the propagation of high-power microwave pulse, and (3) the lifetime of the plasma. Experiments were conducted in a large chamber made of a 2-ft cube of Plexiglas and filled with dry air to a pressure comparable to the upper atmosphere. Two microwave beams (3.27 GHz) generated by a single magnetron tube were fed into the cube, with parallel polarization direction, by two S-band microwave horns placed at right angles to the adjacent sides. A set of parallel plasma layers was then generated in the central region of the chamber where the two beams intersect. A Bragg scattering experiment was then performed using the plasma layers as a Bragg reflector. The experiment results were found to agree very well with the theory, which predicts effective Bragg scattering. The results show that after the first 70 μs the attachment rate is balanced by the detachment rate and the loss of free electrons is mainly determined by the acceptable electron ion recombination rate.

Original languageEnglish (US)
Title of host publicationIEEE Conference Record - Abstracts
PublisherPubl by IEEE
Pages152
Number of pages1
StatePublished - 1990
Event1990 IEEE International Conference on Plasma Science - Oakland, CA, USA
Duration: May 21 1990May 23 1990

Other

Other1990 IEEE International Conference on Plasma Science
CityOakland, CA, USA
Period5/21/905/23/90

Fingerprint

Bragg reflectors
Radar
Microwaves
Plasmas
Experiments
Scattering
Upper atmosphere
Electrons
Polarization
Ions
Air

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kuo, S., & Zhang, Y. S. (1990). On the feasibility of microwave produced Bragg reflector for the OTH radar application. In IEEE Conference Record - Abstracts (pp. 152). Publ by IEEE.

On the feasibility of microwave produced Bragg reflector for the OTH radar application. / Kuo, Spencer; Zhang, Y. S.

IEEE Conference Record - Abstracts. Publ by IEEE, 1990. p. 152.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kuo, S & Zhang, YS 1990, On the feasibility of microwave produced Bragg reflector for the OTH radar application. in IEEE Conference Record - Abstracts. Publ by IEEE, pp. 152, 1990 IEEE International Conference on Plasma Science, Oakland, CA, USA, 5/21/90.
Kuo S, Zhang YS. On the feasibility of microwave produced Bragg reflector for the OTH radar application. In IEEE Conference Record - Abstracts. Publ by IEEE. 1990. p. 152
Kuo, Spencer ; Zhang, Y. S. / On the feasibility of microwave produced Bragg reflector for the OTH radar application. IEEE Conference Record - Abstracts. Publ by IEEE, 1990. pp. 152
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