Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude Scintillation
The α-μ model has become widely used in statistical analyses of radio channels, due to the flexibility provided by its two degrees of freedom. Among several applications, it has been used in the characterization of low-latitude amplitude scintillation, which frequently occurs during the nighttime of...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2014/573615 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832565276115206144 |
|---|---|
| author | Kelias Oliveira Alison de Oliveira Moraes Emanoel Costa Marcio Tadeu de Assis Honorato Muella Eurico Rodrigues de Paula Waldecir Perrella |
| author_facet | Kelias Oliveira Alison de Oliveira Moraes Emanoel Costa Marcio Tadeu de Assis Honorato Muella Eurico Rodrigues de Paula Waldecir Perrella |
| author_sort | Kelias Oliveira |
| collection | DOAJ |
| description | The α-μ model has become widely used in statistical analyses of radio channels, due to the flexibility provided by its two degrees of freedom. Among several applications, it has been used in the characterization of low-latitude amplitude scintillation, which frequently occurs during the nighttime of particular seasons of high solar flux years, affecting radio signals that propagate through the ionosphere. Depending on temporal and spatial distributions, ionospheric scintillation may cause availability and precision problems to users of global navigation satellite systems. The present work initially stresses the importance of the flexibility provided by α-μ model in comparison with the limitations of a single-parameter distribution for the representation of first-order statistics of amplitude scintillation. Next, it focuses on the statistical evaluation of the power spectral density of ionospheric amplitude scintillation. The formulation based on the α-μ model is developed and validated using experimental data obtained in São José dos Campos (23.1°S; 45.8°W; dip latitude 17.3°S), Brazil, located near the southern crest of the ionospheric equatorial ionization anomaly. These data were collected between December 2001 and January 2002, a period of high solar flux conditions. The results show that the proposed model fits power spectral densities estimated from field data quite well. |
| format | Article |
| id | doaj-art-f774c9a2c0784c9f9dd9e2ebc1384d7b |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-f774c9a2c0784c9f9dd9e2ebc1384d7b2025-02-03T01:08:49ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772014-01-01201410.1155/2014/573615573615Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude ScintillationKelias Oliveira0Alison de Oliveira Moraes1Emanoel Costa2Marcio Tadeu de Assis Honorato Muella3Eurico Rodrigues de Paula4Waldecir Perrella5Instituto Federal de Educação, Ciência e Tecnologia de Goiás (IFG), Goiânia, GO, BrazilInstituto de Aeronáutica e Espaço (IAE), São José dos Campos, SP, BrazilCentro de Estudos em Telecomunicações, Pontifícia Universidade Católica do Rio de Janeiro (CETUC/PUC-Rio), Rio de Janeiro, RJ, BrazilInstituto de Pesquisa e Desenvolvimento, Universidade do Vale do Paraíba (UNIVAP), São José dos Campos, SP, BrazilInstituto Nacional de Pesquisas Espaciais (INPE), São José dos Campos, SP, BrazilInstituto Tecnológico de Aeronáutica (ITA), São José dos Campos, SP, BrazilThe α-μ model has become widely used in statistical analyses of radio channels, due to the flexibility provided by its two degrees of freedom. Among several applications, it has been used in the characterization of low-latitude amplitude scintillation, which frequently occurs during the nighttime of particular seasons of high solar flux years, affecting radio signals that propagate through the ionosphere. Depending on temporal and spatial distributions, ionospheric scintillation may cause availability and precision problems to users of global navigation satellite systems. The present work initially stresses the importance of the flexibility provided by α-μ model in comparison with the limitations of a single-parameter distribution for the representation of first-order statistics of amplitude scintillation. Next, it focuses on the statistical evaluation of the power spectral density of ionospheric amplitude scintillation. The formulation based on the α-μ model is developed and validated using experimental data obtained in São José dos Campos (23.1°S; 45.8°W; dip latitude 17.3°S), Brazil, located near the southern crest of the ionospheric equatorial ionization anomaly. These data were collected between December 2001 and January 2002, a period of high solar flux conditions. The results show that the proposed model fits power spectral densities estimated from field data quite well.http://dx.doi.org/10.1155/2014/573615 |
| spellingShingle | Kelias Oliveira Alison de Oliveira Moraes Emanoel Costa Marcio Tadeu de Assis Honorato Muella Eurico Rodrigues de Paula Waldecir Perrella Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude Scintillation International Journal of Antennas and Propagation |
| title | Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude Scintillation |
| title_full | Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude Scintillation |
| title_fullStr | Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude Scintillation |
| title_full_unstemmed | Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude Scintillation |
| title_short | Validation of the α-μ Model of the Power Spectral Density of GPS Ionospheric Amplitude Scintillation |
| title_sort | validation of the α μ model of the power spectral density of gps ionospheric amplitude scintillation |
| url | http://dx.doi.org/10.1155/2014/573615 |
| work_keys_str_mv | AT keliasoliveira validationoftheammodelofthepowerspectraldensityofgpsionosphericamplitudescintillation AT alisondeoliveiramoraes validationoftheammodelofthepowerspectraldensityofgpsionosphericamplitudescintillation AT emanoelcosta validationoftheammodelofthepowerspectraldensityofgpsionosphericamplitudescintillation AT marciotadeudeassishonoratomuella validationoftheammodelofthepowerspectraldensityofgpsionosphericamplitudescintillation AT euricorodriguesdepaula validationoftheammodelofthepowerspectraldensityofgpsionosphericamplitudescintillation AT waldecirperrella validationoftheammodelofthepowerspectraldensityofgpsionosphericamplitudescintillation |