Errors due to random noise in velocity measurement using incoherent-scatter radar
The random-noise errors involved in measuring the Doppler shift of an 'incoherent-scatter' spectrum are predicted theoretically for all values of T e / T i from 1.0 to 3.0. After correction has been made for the effects of convolution during transmission and reception and the additional er...
Published in: | Annales Geophysicae |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
1996
|
Subjects: | |
Online Access: | https://doi.org/10.1007/s00585-996-1480-x https://doaj.org/article/48722e4fc13848afa8d5402dc6166ca1 |
id |
ftdoajarticles:oai:doaj.org/article:48722e4fc13848afa8d5402dc6166ca1 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:48722e4fc13848afa8d5402dc6166ca1 2023-05-15T16:04:29+02:00 Errors due to random noise in velocity measurement using incoherent-scatter radar P. J. S. Williams A. Etemadi I. W. McCrea H. Todd 1996-12-01T00:00:00Z https://doi.org/10.1007/s00585-996-1480-x https://doaj.org/article/48722e4fc13848afa8d5402dc6166ca1 EN eng Copernicus Publications https://www.ann-geophys.net/14/1480/1996/angeo-14-1480-1996.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-996-1480-x 0992-7689 1432-0576 https://doaj.org/article/48722e4fc13848afa8d5402dc6166ca1 Annales Geophysicae, Vol 14, Pp 1480-1486 (1996) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 1996 ftdoajarticles https://doi.org/10.1007/s00585-996-1480-x 2022-12-30T23:18:06Z The random-noise errors involved in measuring the Doppler shift of an 'incoherent-scatter' spectrum are predicted theoretically for all values of T e / T i from 1.0 to 3.0. After correction has been made for the effects of convolution during transmission and reception and the additional errors introduced by subtracting the average of the background gates, the rms errors can be expressed by a simple semi-empirical formula. The observed errors are determined from a comparison of simultaneous EISCAT measurements using an identical pulse code on several adjacent frequencies. The plot of observed versus predicted error has a slope of 0.991 and a correlation coefficient of 99.3%. The prediction also agrees well with the mean of the error distribution reported by the standard EISCAT analysis programme. Article in Journal/Newspaper EISCAT Directory of Open Access Journals: DOAJ Articles Annales Geophysicae 14 12 1480 1486 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 P. J. S. Williams A. Etemadi I. W. McCrea H. Todd Errors due to random noise in velocity measurement using incoherent-scatter radar |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The random-noise errors involved in measuring the Doppler shift of an 'incoherent-scatter' spectrum are predicted theoretically for all values of T e / T i from 1.0 to 3.0. After correction has been made for the effects of convolution during transmission and reception and the additional errors introduced by subtracting the average of the background gates, the rms errors can be expressed by a simple semi-empirical formula. The observed errors are determined from a comparison of simultaneous EISCAT measurements using an identical pulse code on several adjacent frequencies. The plot of observed versus predicted error has a slope of 0.991 and a correlation coefficient of 99.3%. The prediction also agrees well with the mean of the error distribution reported by the standard EISCAT analysis programme. |
format |
Article in Journal/Newspaper |
author |
P. J. S. Williams A. Etemadi I. W. McCrea H. Todd |
author_facet |
P. J. S. Williams A. Etemadi I. W. McCrea H. Todd |
author_sort |
P. J. S. Williams |
title |
Errors due to random noise in velocity measurement using incoherent-scatter radar |
title_short |
Errors due to random noise in velocity measurement using incoherent-scatter radar |
title_full |
Errors due to random noise in velocity measurement using incoherent-scatter radar |
title_fullStr |
Errors due to random noise in velocity measurement using incoherent-scatter radar |
title_full_unstemmed |
Errors due to random noise in velocity measurement using incoherent-scatter radar |
title_sort |
errors due to random noise in velocity measurement using incoherent-scatter radar |
publisher |
Copernicus Publications |
publishDate |
1996 |
url |
https://doi.org/10.1007/s00585-996-1480-x https://doaj.org/article/48722e4fc13848afa8d5402dc6166ca1 |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
Annales Geophysicae, Vol 14, Pp 1480-1486 (1996) |
op_relation |
https://www.ann-geophys.net/14/1480/1996/angeo-14-1480-1996.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-996-1480-x 0992-7689 1432-0576 https://doaj.org/article/48722e4fc13848afa8d5402dc6166ca1 |
op_doi |
https://doi.org/10.1007/s00585-996-1480-x |
container_title |
Annales Geophysicae |
container_volume |
14 |
container_issue |
12 |
container_start_page |
1480 |
op_container_end_page |
1486 |
_version_ |
1766400067504177152 |