Approximate Cramér–Rao bound on Doppler error in correlation-processing relatively narrowband noise radar

Michał Meller

doi:10.1049/iet-rsn:20080080

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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Autor (1)

Michał Meller dr hab. inż.
- Department of Signal and Information Processing, Telecommunications Research Institute Gdańsk Division

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Wersja publikacji: Accepted albo Published Version
Licencja: Copyright (The Institution of Engineering and Technology)

Słowa kluczowe

CORRELATION, DOPPLER, ESTIMATION, NOISE RADAR, RADAR THEORY

Informacje szczegółowe

Kategoria:: Publikacja w czasopiśmie
Typ:: artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:: 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