基于信號共軛循環(huán)平穩(wěn)特性的算法研究
The Pre-processing Method Based on Signal Conjugate Cyclostationary
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摘要: 該文在深入研究共軛循環(huán)平穩(wěn)算法內(nèi)在聯(lián)系的基礎(chǔ)上，提出了一類基于信號共軛循環(huán)相關(guān)特性的預(yù)處理算法(HAM,MHAM,IHAM)。這些預(yù)處理算法充分利用了共軛循環(huán)相關(guān)數(shù)據(jù)矩陣是。Hankel矩陣的先驗(yàn)信息，通過Hankel預(yù)處理來提高算法在低信噪比時的信號到達(dá)角估計(jì)性能。最后通過計(jì)算機(jī)仿真實(shí)驗(yàn)證實(shí)算法的有效性。
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關(guān)鍵詞:
- 陣列信號處理; DOA; 循環(huán)平穩(wěn)
Abstract: This paper researches the relation of conjugate cyclostationary methods, and proposes a kind of pre-processing method of conjugate cyclic correlation. These methods make use of the information of the matrix of conjugate cyclic correlation is Hankel matrix. Therefore, pre-processing of Hankel Approximation Method (HAM) is proposed to cope with the low signal-noise ratio (SNR) situations. These methods can improve the performance of Direction-Of-Arrival (DOA), and its effectiveness are illustrated by the simulation results. -
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