BibTex RIS Kaynak Göster

Empirical Evaluation of Wet -Term of Refractivity in Nigeria

Yıl 2010, Cilt: 2 Sayı: 2, 63 - 68, 01.06.2010

Öz

This paper presents the evaluation of the wet-term of the surface refractivity for twenty three sites in Nigeria carefully selected such that there is wide coverage for the country using ten-year data collected from Nigeria Meteorological Agency. The analysis showed that the southern sites have higher N-wet values compared to the northern sites. 50 % of the time, wet term refractivity is higher than 100 N-units in the southern sites. However, six out of eleven northern sites considered have values less than 50 N-units during the dry season

Kaynakça

  • 1. H. V Hitney, J. H Richter, R. A Pappert, K. D Anderson and G.B Baungartner Jr. “Tropospheric Radio propagation Assessment, Proc.IEEE,73 (1985) 265-283
  • 2. M. P. M. Hall, “Effects of the Troposphere on Radio Communication” Institute ofElectrical Engineers (1979).,
  • 3. P. Valtr and P. Pechac, “ Tropopheric Refraction Modelling Using Ray Tracing andParabolic Equation, Czech Technical University in Prague, Czech Republic.
  • 4. Anthony R.L., Chris Rocken, Sergey V. Sokolovskiy and Kenneth D. Anderson “VerticalProfiling of Atmospheric Refractivity from Groundbased GPS”. American Geophysical union (2002)
  • 5. Steven M. Babin “Surface Duct Height Distributions for Wallops Island Virginia, 1985-1994. American Meteorological Society (1996) 86-93
  • 6. Martin GRABNER, Vaclav KVICERA, “Refractive Index Measurement at TV-TowerPrague”. Radio Engineering, Vol. 12, No 1, (2003) 5-7
  • 7. Pedro Garcia, Jose M. Riera and Ana Benarroch, “Statistics of Dry And Wet Scintillationin Mandrid Using Intelsat 50 GHz Beacon”, Cost 280 PMS-013, 1st InternationalWorkshop (2002)
  • 8. Rec. ITU-R, “Propagation Data and Prediction Methods Required for the Design ofEarth-Space Telecommunication Systems” Rec. PN 618-7, InternationalTelecommunication Union, Geneva (2001)
  • 9. Karasawa, Y; Yamada, M. and Allnutt, “A New Prediction Method for TroposphericScintillation on Earth-Space Paths”, IEEE Trans. Antennas Propagation, Vol. 36, (Nov.,1988) 1608-1614
  • 10. Otung, I.E., “ Prediction of Tropospheric Amplitude Scintillation on a Satellite Link”,
  • IEEE Trans Antennas Propagation, Vol. 44, (Dec. 1996) 1600-1608 11. Orgies, G., “Prediction of Slant-Path Amplitude Scintillations from MeteorologicalParameters”, Proc of int. Symp. on radio Propagation, Beijing, China (Aug. 1993)
  • 12. ITU-R “Radio Refractive Index: its formula and refractivity data” Rec. P 453-9,International Telecommunication Union, Geneva (2003)
  • 13. Otolia Croitoru and Marian Alexandru, “Propagation effects in GPS Accuracy. Theprecision Improvement of positioning in real conditions of Propagation”. Electronics.Sozopol, Bulgaria (2004)
  • 14. Adediji, A.T., Ajewole, M.O., Fallout S.E and Oladosu, O.R,”Radio RefractivityMeasurement at 150m Altitude on TV Tower in Akure, South-West Nigeria” Journal ofEngineering and Applied Sciences 2(8), Medwell Journals, (2007) 1308-1313
Yıl 2010, Cilt: 2 Sayı: 2, 63 - 68, 01.06.2010

Öz

Kaynakça

  • 1. H. V Hitney, J. H Richter, R. A Pappert, K. D Anderson and G.B Baungartner Jr. “Tropospheric Radio propagation Assessment, Proc.IEEE,73 (1985) 265-283
  • 2. M. P. M. Hall, “Effects of the Troposphere on Radio Communication” Institute ofElectrical Engineers (1979).,
  • 3. P. Valtr and P. Pechac, “ Tropopheric Refraction Modelling Using Ray Tracing andParabolic Equation, Czech Technical University in Prague, Czech Republic.
  • 4. Anthony R.L., Chris Rocken, Sergey V. Sokolovskiy and Kenneth D. Anderson “VerticalProfiling of Atmospheric Refractivity from Groundbased GPS”. American Geophysical union (2002)
  • 5. Steven M. Babin “Surface Duct Height Distributions for Wallops Island Virginia, 1985-1994. American Meteorological Society (1996) 86-93
  • 6. Martin GRABNER, Vaclav KVICERA, “Refractive Index Measurement at TV-TowerPrague”. Radio Engineering, Vol. 12, No 1, (2003) 5-7
  • 7. Pedro Garcia, Jose M. Riera and Ana Benarroch, “Statistics of Dry And Wet Scintillationin Mandrid Using Intelsat 50 GHz Beacon”, Cost 280 PMS-013, 1st InternationalWorkshop (2002)
  • 8. Rec. ITU-R, “Propagation Data and Prediction Methods Required for the Design ofEarth-Space Telecommunication Systems” Rec. PN 618-7, InternationalTelecommunication Union, Geneva (2001)
  • 9. Karasawa, Y; Yamada, M. and Allnutt, “A New Prediction Method for TroposphericScintillation on Earth-Space Paths”, IEEE Trans. Antennas Propagation, Vol. 36, (Nov.,1988) 1608-1614
  • 10. Otung, I.E., “ Prediction of Tropospheric Amplitude Scintillation on a Satellite Link”,
  • IEEE Trans Antennas Propagation, Vol. 44, (Dec. 1996) 1600-1608 11. Orgies, G., “Prediction of Slant-Path Amplitude Scintillations from MeteorologicalParameters”, Proc of int. Symp. on radio Propagation, Beijing, China (Aug. 1993)
  • 12. ITU-R “Radio Refractive Index: its formula and refractivity data” Rec. P 453-9,International Telecommunication Union, Geneva (2003)
  • 13. Otolia Croitoru and Marian Alexandru, “Propagation effects in GPS Accuracy. Theprecision Improvement of positioning in real conditions of Propagation”. Electronics.Sozopol, Bulgaria (2004)
  • 14. Adediji, A.T., Ajewole, M.O., Fallout S.E and Oladosu, O.R,”Radio RefractivityMeasurement at 150m Altitude on TV Tower in Akure, South-West Nigeria” Journal ofEngineering and Applied Sciences 2(8), Medwell Journals, (2007) 1308-1313
Toplam 14 adet kaynakça vardır.

Ayrıntılar

Diğer ID JA65HN86KC
Bölüm Makaleler
Yazarlar

O. Agunlejika Bu kişi benim

T.I. Raji Bu kişi benim

Yayımlanma Tarihi 1 Haziran 2010
Yayımlandığı Sayı Yıl 2010 Cilt: 2 Sayı: 2

Kaynak Göster

APA Agunlejika, O., & Raji, T. (2010). Empirical Evaluation of Wet -Term of Refractivity in Nigeria. International Journal of Engineering and Applied Sciences, 2(2), 63-68.
AMA Agunlejika O, Raji T. Empirical Evaluation of Wet -Term of Refractivity in Nigeria. IJEAS. Haziran 2010;2(2):63-68.
Chicago Agunlejika, O., ve T.I. Raji. “Empirical Evaluation of Wet -Term of Refractivity in Nigeria”. International Journal of Engineering and Applied Sciences 2, sy. 2 (Haziran 2010): 63-68.
EndNote Agunlejika O, Raji T (01 Haziran 2010) Empirical Evaluation of Wet -Term of Refractivity in Nigeria. International Journal of Engineering and Applied Sciences 2 2 63–68.
IEEE O. Agunlejika ve T. Raji, “Empirical Evaluation of Wet -Term of Refractivity in Nigeria”, IJEAS, c. 2, sy. 2, ss. 63–68, 2010.
ISNAD Agunlejika, O. - Raji, T.I. “Empirical Evaluation of Wet -Term of Refractivity in Nigeria”. International Journal of Engineering and Applied Sciences 2/2 (Haziran 2010), 63-68.
JAMA Agunlejika O, Raji T. Empirical Evaluation of Wet -Term of Refractivity in Nigeria. IJEAS. 2010;2:63–68.
MLA Agunlejika, O. ve T.I. Raji. “Empirical Evaluation of Wet -Term of Refractivity in Nigeria”. International Journal of Engineering and Applied Sciences, c. 2, sy. 2, 2010, ss. 63-68.
Vancouver Agunlejika O, Raji T. Empirical Evaluation of Wet -Term of Refractivity in Nigeria. IJEAS. 2010;2(2):63-8.

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