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http://dx.doi.org/10.5370/JEET.2018.13.1.445

Covariance Matrix Synthesis Using Maximum Ratio Combining in Coherent MIMO Radar with Frequency Diversity  

Jeon, Hyeonmu (Dept. of Wireless Communications Engineering, Kwangwoon University)
Chung, Yongseek (Dept. of Wireless Communications Engineering, Kwangwoon University)
Chung, Wonzoo (Devision of Computer and Communications Engineering, Korea University)
Kim, Jongmann (Agency for Defense Development)
Yang, Hoongee (Dept. of Wireless Communications Engineering, Kwangwoon University)
Publication Information
Journal of Electrical Engineering and Technology / v.13, no.1, 2018 , pp. 445-450 More about this Journal
Abstract
Reliable detection and parameter estimation of a radar cross section(RCS) fluctuating target have been known as a difficult task. To reduce the effect of RCS fluctuation, various diversity techniques have been considered. This paper presents a new method for synthesizing a covariance matrix applicable to a coherent multi-input multi-output(MIMO) radar with frequency diversity. It is achieved by efficiently combining covariance matrices corresponding to different carrier frequencies such that the signal-to-noise ratio(SNR) in the combined covariance matrix is maximized. The value of a synthesized covariance matrix is assessed by examining the phase curves of its entries and the improvement on direction of arrival(DOA) estimation.
Keywords
Covariance matrix; RCS; Frequency diversity; DOA; Multicarrier; MIMO;
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