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Progress In Electromagnetics Research
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FAST ESTIMATION OF FREQUENCY AND 2-D DOAS FOR CYLINDRICAL CONFORMAL ARRAY ANTENNA USING STATE-SPACE AND PROPAGATOR METHOD

By W. Si, L. Wan, L. Liu, and Z. Tian

Full Article PDF (274 KB)

Abstract:
The pattern of each element in conformal array has a different direction for the curvature of conformal carrier, which results in polarization diversity of conformal array antenna. Polarization parameters of incident signals are considered in snapshot data model in order to describe the polarization diversity of conformal array antenna. It is required that the polarization parameters and direction of arrival (DOA) of incident signals are estimated together. An integrated frequency and DOA estimation method is proposed in this paper for cylindrical conformal array antenna. The frequency estimation of signal source is obtained by constructing state-space matrix. Through well-designed configuration of elements on cylindrical carriers along with estimation of signal parameters via propagator method (PM), the decoupling scheme for DOA and polarization parameters is implemented. A novel parameter pairing method for frequency and DOA of multiple sources utilizing the interpolation technique is given, based on which the fast frequency-DOA estimation algorithm is developed. Effectiveness of the proposed method is demonstrated by simulation experimental results.

Citation:
W. Si, L. Wan, L. Liu, and Z. Tian, "Fast Estimation of Frequency and 2-D DOAs for Cylindrical Conformal Array Antenna Using State-Space and Propagator Method," Progress In Electromagnetics Research, Vol. 137, 51-71, 2013.
doi:10.2528/PIER12121114
http://www.jpier.org/PIER/pier.php?paper=12121114

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