Approximate Cramér–Rao bound on Doppler error in correlation-processing relatively narrowband noise radar
Abstrakt
The paper studies limitations on accuracy of Doppler estimation in continuous-wave noise radar with correlation processing. Second order properties of output of the correlation receiver are evaluated and an approximate Cram´er-Rao bound on errors of Doppler measurement is derived. The accuracy of Doppler measurements is found to be affected by the following factors: power spectral density of noise signal, frequency response of the lowpass filter in correlator, observation time, velocity of the target and signal to noise ratio. It is shown that the random nature of the transmitted signal induces additional fluctuations at the output of correlator which limit the accuracy even in the infinite signal to noise case. Qualitative extension of the results to a case covering multiple targets and clutter is made. It is argued that the performance will decrease and that increasing transmitted power may not provide significant improvement when clutter is present.
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Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- Licencja
- Copyright (The Institution of Engineering and Technology)
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuł w czasopiśmie wyróżnionym w JCR
- Opublikowano w:
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IET Radar Sonar and Navigation
nr 3,
wydanie 3,
strony 245 - 252,
ISSN: 1751-8784 - Język:
- angielski
- Rok wydania:
- 2009
- Opis bibliograficzny:
- Meller M.: Approximate Cramér–Rao bound on Doppler error in correlation-processing relatively narrowband noise radar// IET Radar Sonar and Navigation. -Vol. 3, iss. 3 (2009), s.245-252
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1049/iet-rsn:20080080
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 154 razy
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