id: 06097783
dt: j
an: 06097783
au: Gao, Chun-Xia; Zhang, Tian-Qi; Wei, Shi-Peng; Tan, Fang-Qing
ti: DOA estimation of coherent NLFM signals based on DPT and virtual array.
so: J. Comput. Appl. 31, No. 9, 2329-2332 (2011).
py: 2011
pu: Science Press, Beijing
la: ZH
cc: 
ut: discrete polynomial phasetransform; virtual array transformation;
    correlation wideband NLFM; direction of arrival estimation
ci: 
li: doi:10.3724/SP.J.1087.2011.02329
ab: Summary: Concerning the common multi-path transmission and reflection
    factors in the radio communications, broadband coherent sources must be
    considered. A new algorithm for the Direction Of Arrival (DOA)
    estimation of correlation wideband Non-Linear Frequency Modulation
    (NLFM) signals based on Discrete Polynomial-phase Transform (DPT) and
    virtual array was introduced. And comparison, analysis and improvement
    were done on the new algorithm. It can settle the problem of not
    finding coherent signals in routine MUSIC and ESPRIT algorithm. This
    approach can more accurately estimate and does not decrease effective
    array aperture, and it also can improve the utilization of array. Then
    the angle estimation algorithm of two closely-spaced emitters was
    proposed. The simulation results verify the correctness and efficiency
    of the new algorithm.
rv: