On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation
A method of determining spectral parameters p (slope of the phase PSD) and T (phase PSD at 1 Hz) and hence tracking error variance in a GPS receiver PLL from just amplitude and phase scintillation indices and an estimated value of the Fresnel frequency has been previously presented. Here this method...
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American Geophysical Union
2011
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ftunitmmelaka:oai:eprints.utem.edu.my:3783 2023-07-30T04:05:51+02:00 On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation Strangeways, Hal J. Ho, Yih Hwa Aquino, Marcio H. O. Elmas, Zeynep G. Marques, Haroldo Antonio Monico, Joao Francisco Galera H. A. Silva 2011 text http://eprints.utem.edu.my/id/eprint/3783/ http://eprints.utem.edu.my/id/eprint/3783/1/On_determining_spectral_parameters,_tracking_jitter,_and_GPS.pdf http://www.agu.org/journals/rs/ en eng American Geophysical Union http://eprints.utem.edu.my/id/eprint/3783/1/On_determining_spectral_parameters,_tracking_jitter,_and_GPS.pdf Strangeways, Hal J. and Ho, Yih Hwa and Aquino, Marcio H. O. and Elmas, Zeynep G. and Marques, Haroldo Antonio and Monico, Joao Francisco Galera and H. A. Silva (2011) On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation. RADIO SCIENCE, 46. ISSN 0048–6604 TK Electrical engineering. Electronics Nuclear engineering Article PeerReviewed 2011 ftunitmmelaka 2023-07-11T17:46:59Z A method of determining spectral parameters p (slope of the phase PSD) and T (phase PSD at 1 Hz) and hence tracking error variance in a GPS receiver PLL from just amplitude and phase scintillation indices and an estimated value of the Fresnel frequency has been previously presented. Here this method is validated using 50 Hz GPS phase and amplitude data from high latitude receivers in northern Norway and Svalbard. This has been done both using (1) a Fresnel frequency estimated using the amplitude PSD (in order to check the accuracy of the method) and (2) a constant assumed value of Fresnel frequency for the data set, convenient for the situation when contemporaneous phase PSDs are not available. Both of the spectral parameters ( p, T ) calculated using this method are in quite good agreement with those obtained by direct measurements of the phase spectrum as are tracking jitter variances determined for GPS receiver PLLs using these values. For the Svalbard data set, a significant difference in the scintillation level observed on the paths from different satellites received simultaneously was noted. Then, it is shown that the accuracy of relative GPS positioning can be improved by use of the tracking jitter variance in weighting the measurements from each satellite used in the positioning estimation. This has significant advantages for scintillation mitigation, particularly since the method can be accomplished utilizing only time domain measurements thus obviating the need for the phase PSDs in order to extract the spectral parameters required for tracking jitter determination. Article in Journal/Newspaper Northern Norway Svalbard Universiti Teknikal Malaysia Melaka (UTeM) Repository Norway Svalbard |
institution |
Open Polar |
collection |
Universiti Teknikal Malaysia Melaka (UTeM) Repository |
op_collection_id |
ftunitmmelaka |
language |
English |
topic |
TK Electrical engineering. Electronics Nuclear engineering |
spellingShingle |
TK Electrical engineering. Electronics Nuclear engineering Strangeways, Hal J. Ho, Yih Hwa Aquino, Marcio H. O. Elmas, Zeynep G. Marques, Haroldo Antonio Monico, Joao Francisco Galera H. A. Silva On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation |
topic_facet |
TK Electrical engineering. Electronics Nuclear engineering |
description |
A method of determining spectral parameters p (slope of the phase PSD) and T (phase PSD at 1 Hz) and hence tracking error variance in a GPS receiver PLL from just amplitude and phase scintillation indices and an estimated value of the Fresnel frequency has been previously presented. Here this method is validated using 50 Hz GPS phase and amplitude data from high latitude receivers in northern Norway and Svalbard. This has been done both using (1) a Fresnel frequency estimated using the amplitude PSD (in order to check the accuracy of the method) and (2) a constant assumed value of Fresnel frequency for the data set, convenient for the situation when contemporaneous phase PSDs are not available. Both of the spectral parameters ( p, T ) calculated using this method are in quite good agreement with those obtained by direct measurements of the phase spectrum as are tracking jitter variances determined for GPS receiver PLLs using these values. For the Svalbard data set, a significant difference in the scintillation level observed on the paths from different satellites received simultaneously was noted. Then, it is shown that the accuracy of relative GPS positioning can be improved by use of the tracking jitter variance in weighting the measurements from each satellite used in the positioning estimation. This has significant advantages for scintillation mitigation, particularly since the method can be accomplished utilizing only time domain measurements thus obviating the need for the phase PSDs in order to extract the spectral parameters required for tracking jitter determination. |
format |
Article in Journal/Newspaper |
author |
Strangeways, Hal J. Ho, Yih Hwa Aquino, Marcio H. O. Elmas, Zeynep G. Marques, Haroldo Antonio Monico, Joao Francisco Galera H. A. Silva |
author_facet |
Strangeways, Hal J. Ho, Yih Hwa Aquino, Marcio H. O. Elmas, Zeynep G. Marques, Haroldo Antonio Monico, Joao Francisco Galera H. A. Silva |
author_sort |
Strangeways, Hal J. |
title |
On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation |
title_short |
On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation |
title_full |
On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation |
title_fullStr |
On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation |
title_full_unstemmed |
On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation |
title_sort |
on determining spectral parameters, tracking jitter, and gps positioning improvement by scintillation mitigation |
publisher |
American Geophysical Union |
publishDate |
2011 |
url |
http://eprints.utem.edu.my/id/eprint/3783/ http://eprints.utem.edu.my/id/eprint/3783/1/On_determining_spectral_parameters,_tracking_jitter,_and_GPS.pdf http://www.agu.org/journals/rs/ |
geographic |
Norway Svalbard |
geographic_facet |
Norway Svalbard |
genre |
Northern Norway Svalbard |
genre_facet |
Northern Norway Svalbard |
op_relation |
http://eprints.utem.edu.my/id/eprint/3783/1/On_determining_spectral_parameters,_tracking_jitter,_and_GPS.pdf Strangeways, Hal J. and Ho, Yih Hwa and Aquino, Marcio H. O. and Elmas, Zeynep G. and Marques, Haroldo Antonio and Monico, Joao Francisco Galera and H. A. Silva (2011) On determining spectral parameters, tracking jitter, and GPS positioning improvement by scintillation mitigation. RADIO SCIENCE, 46. ISSN 0048–6604 |
_version_ |
1772818132122992640 |