Fractional baud-length coding
We present a novel approach for modulating radar transmissions in order to improve target range and Doppler estimation accuracy. This is achieved by using non-uniform baud lengths. With this method it is possible to increase sub-baud range-resolution of phase coded radar measurements while maintaini...
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Copernicus Publications
2011
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ftdoajarticles:oai:doaj.org/article:1d18c9faf34948c0a45a8b452dc88036 2023-05-15T16:04:42+02:00 Fractional baud-length coding J. Vierinen 2011-06-01T00:00:00Z https://doi.org/10.5194/angeo-29-1189-2011 https://doaj.org/article/1d18c9faf34948c0a45a8b452dc88036 EN eng Copernicus Publications https://www.ann-geophys.net/29/1189/2011/angeo-29-1189-2011.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-29-1189-2011 0992-7689 1432-0576 https://doaj.org/article/1d18c9faf34948c0a45a8b452dc88036 Annales Geophysicae, Vol 29, Pp 1189-1196 (2011) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2011 ftdoajarticles https://doi.org/10.5194/angeo-29-1189-2011 2022-12-31T01:15:27Z We present a novel approach for modulating radar transmissions in order to improve target range and Doppler estimation accuracy. This is achieved by using non-uniform baud lengths. With this method it is possible to increase sub-baud range-resolution of phase coded radar measurements while maintaining a narrow transmission bandwidth. We first derive target backscatter amplitude estimation error covariance matrix for arbitrary targets when estimating backscatter in amplitude domain. We define target optimality and discuss different search strategies that can be used to find well performing transmission envelopes. We give several simulated examples of the method showing that fractional baud-length coding results in smaller estimation errors than conventional uniform baud length transmission codes when estimating the target backscatter amplitude at sub-baud range resolution. We also demonstrate the method in practice by analyzing the range resolved power of a low-altitude meteor trail echo that was measured using a fractional baud-length experiment with the EISCAT UHF system. Article in Journal/Newspaper EISCAT Directory of Open Access Journals: DOAJ Articles Annales Geophysicae 29 6 1189 1196 |
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 J. Vierinen Fractional baud-length coding |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
We present a novel approach for modulating radar transmissions in order to improve target range and Doppler estimation accuracy. This is achieved by using non-uniform baud lengths. With this method it is possible to increase sub-baud range-resolution of phase coded radar measurements while maintaining a narrow transmission bandwidth. We first derive target backscatter amplitude estimation error covariance matrix for arbitrary targets when estimating backscatter in amplitude domain. We define target optimality and discuss different search strategies that can be used to find well performing transmission envelopes. We give several simulated examples of the method showing that fractional baud-length coding results in smaller estimation errors than conventional uniform baud length transmission codes when estimating the target backscatter amplitude at sub-baud range resolution. We also demonstrate the method in practice by analyzing the range resolved power of a low-altitude meteor trail echo that was measured using a fractional baud-length experiment with the EISCAT UHF system. |
format |
Article in Journal/Newspaper |
author |
J. Vierinen |
author_facet |
J. Vierinen |
author_sort |
J. Vierinen |
title |
Fractional baud-length coding |
title_short |
Fractional baud-length coding |
title_full |
Fractional baud-length coding |
title_fullStr |
Fractional baud-length coding |
title_full_unstemmed |
Fractional baud-length coding |
title_sort |
fractional baud-length coding |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/angeo-29-1189-2011 https://doaj.org/article/1d18c9faf34948c0a45a8b452dc88036 |
genre |
EISCAT |
genre_facet |
EISCAT |
op_source |
Annales Geophysicae, Vol 29, Pp 1189-1196 (2011) |
op_relation |
https://www.ann-geophys.net/29/1189/2011/angeo-29-1189-2011.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-29-1189-2011 0992-7689 1432-0576 https://doaj.org/article/1d18c9faf34948c0a45a8b452dc88036 |
op_doi |
https://doi.org/10.5194/angeo-29-1189-2011 |
container_title |
Annales Geophysicae |
container_volume |
29 |
container_issue |
6 |
container_start_page |
1189 |
op_container_end_page |
1196 |
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1766400309022687232 |