http://iet.metastore.ingenta.com
1887

Simplified estimation of ray-path mirroring height for HF radiowaves reflected from the ionospheric F-region

Simplified estimation of ray-path mirroring height for HF radiowaves reflected from the ionospheric F-region

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
IEE Proceedings F (Communications, Radar and Signal Processing) — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

From Milsom's equations, which describe the geometry of ray-path hops reflected from the ionospheric F-layer, algorithms for the simplified estimation of mirror-reflection height are developed. These allow for hop length and the effects of variations in underlying ionisation (via the ratio of the F2- and E-layer critical frequencies) and F2-layer peak height (via the M(3000)F2-factor). Separate algorithms are presented which are applicable to a range of signal frequencies about the FOT and to propagation at the MUF. The accuracies and complexities of the algorithms are compared with those inherent in the use of a procedure based on an equation developed by Shimazaki.

References

    1. 1)
      • `Second CCIR computer-based interim method for estimating sky-wave field strength and transmission loss at frequencies between 2 and 30 MHz', Supplement to Report 252-2, 1978, CCIR.
    2. 2)
      • Barghausen, A.F., Finney, J.W., Proctor, L.L., Shultz, L.D.: `Predicting long-term operational parameters of high-frequency sky-wave telecommunication systems', ESSA Technical Report 110-ITS 78, 1969.
    3. 3)
      • T. Shimazaki . World-wide daily variations in the height of the maximum electron density of the ionospheric F2 layer. J. Radio Res. Labs. , 85 - 97
    4. 4)
      • E.V. Appleton , W.J.G. Beynon . The application of ionospheric data to radio communication problems. Proc. Phys. Soc. (Pt. 1) , 518 - 533
    5. 5)
      • H.G. Booker , S.L. Seaton . Relation between actual and virtual ionospheric height. Phys. Rev. , 87 - 94
    6. 6)
      • N. Smith . The relation of radio skywave transmission to ionosphere measurements. Proc. Inst. Radio Eng. , 332 - 345
    7. 7)
      • J.W. Wright , R.E. McDuffie . The relation of hmax F2 to M(3000)F2 and htF2. J. Radio Res. Labs. , 409 - 419
    8. 8)
      • : `Propagation prediction methods for high frequency broadcasting', Report 894, 1983, CCIR.
    9. 9)
      • P.A. Bradley , J.R. Dudeney . A simple model of the vertical distribution of electron concentration in the ionosphere. J. Atmos. Terr. Phys. , 2131 - 2141
    10. 10)
      • J.D. Milsom . Exact ray-tracing through the Bradley-Dudeney model ionosphere. Marconi Rev. , 172 - 196
    11. 11)
      • M. Lockwood . Simple M-factor algorithm for improved estimation of the basic maximum usable frequency of radio waves reflected from the ionospheric F-region. IEE Proc. F., Commun., Radar & Signal Process. , 296 - 302
http://iet.metastore.ingenta.com/content/journals/10.1049/ip-f-1.1984.0020
Loading

Related content

content/journals/10.1049/ip-f-1.1984.0020
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address