High resolution time of arrival estimation for a cooperative sensor system
Distance resolution of cooperative sensors is limited by the signal bandwidth. For the transmission mainly lower frequency bands are used which are more narrowband than classical radar frequencies. To compensate this resolution problem the combination of a pseudo-noise coded pulse compression system...
| Main Authors: | , |
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| Format: | Article |
| Language: | deu |
| Published: |
Copernicus Publications
2010-09-01
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| Series: | Advances in Radio Science |
| Online Access: | http://www.adv-radio-sci.net/8/61/2010/ars-8-61-2010.pdf |
| Summary: | Distance resolution of cooperative sensors is limited by the signal
bandwidth. For the transmission mainly lower frequency bands are used which
are more narrowband than classical radar frequencies. To compensate this
resolution problem the combination of a pseudo-noise coded pulse compression
system with superresolution time of arrival estimation is proposed. Coded
pulsecompression allows secure and fast distance measurement in multi-user
scenarios which can easily be adapted for data transmission purposes
(Morhart and Biebl, 2009). Due to the lack of available signal bandwidth the
measurement accuracy degrades especially in multipath scenarios.
Superresolution time of arrival algorithms can improve this behaviour by
estimating the channel impulse response out of a band-limited channel view.
For the given test system the implementation of a MUSIC algorithm permitted a
two times better distance resolution as the standard pulse compression. |
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| ISSN: | 1684-9965 1684-9973 |