کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
564186 875575 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Time-difference-of-arrival estimation algorithms for cyclostationary signals in impulsive noise
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Time-difference-of-arrival estimation algorithms for cyclostationary signals in impulsive noise
چکیده انگلیسی

In this paper, new signal-selective methods for the estimation of time-difference-of-arrival in the presence of interfering signals and non-Gaussian symmetric α-stable impulsive noise are introduced. First, the performance degradation of the conventional approaches based on second-order cyclic statistics is presented. Then, two new classes of robust algorithms are developed using the theory of stable distributions and the cyclostationary property, including the pth-order cyclostationarity methods and the fractional lower-order cyclostationarity methods. It is shown that these new methods are tolerant to interference and robust in both Gaussian and non-Gaussian impulsive noise environments. The improved performance is demonstrated through detailed theoretical analysis and simulations.


► The TDOA estimation for cyclostationary signals in impulsive noise environment is considered.
► Two new types of cyclic statistics are developed to exploit cyclostationarity property.
► Two new classes of signal-selective TDOA algorithms for cyclostationary signals are presented.
► The new cyclic statistics are used in the TDOA methods to suppress interference and noise.
► Simulation results show effectiveness and robustness of the approaches in various scenarios.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 92, Issue 9, September 2012, Pages 2238–2247
نویسندگان
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