基于虛擬陣列的波達(dá)方向、載頻和極化參數(shù)聯(lián)合估計(jì)
A Novel Method for Joint DOA-Carrier-Polarization Estimation Based on Virtual Array
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摘要: 針對(duì)電子偵測(cè)系統(tǒng)中對(duì)多個(gè)信源方位、載波頻率以及極化狀態(tài)等信息同步提取的要求，該文通過(guò)將原始正交偶極子物理陣列的多個(gè)時(shí)域輸出在空間域上擴(kuò)展為虛擬傳感器陣列，提出了一種基于波達(dá)方向矩陣法的二維方位角、頻率和二維極化狀態(tài)聯(lián)合估計(jì)的新方法。虛擬傳感器陣列的理論孔徑為物理陣列的數(shù)倍，解決了ESPRIT類(lèi)算法陣列孔徑損失的問(wèn)題，具有了在低信噪比、多輻射源環(huán)境下更強(qiáng)的適應(yīng)能力；該方法無(wú)需譜峰搜索，各參數(shù)在求解過(guò)程中自然配對(duì)，可以以很小的計(jì)算量達(dá)到與ESPRIT方法相似的性能或以一定計(jì)算量為代價(jià)換取高得多的性能。算法對(duì)于傳感器陣列的結(jié)構(gòu)無(wú)特殊限制，具有很好的理論價(jià)值以及應(yīng)用前景。理論分析與計(jì)算機(jī)仿真實(shí)驗(yàn)都證明了算法的有效性。
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關(guān)鍵詞:
- 波達(dá)方向;頻率估計(jì);極化;空時(shí)擴(kuò)展;虛擬陣列
Abstract: The Direction, carrier frequency and polarization information of multi-sources are all required for many systems such as electronic surveillance. Based on one crossed dipole sensor array, a tempo-spatial expanded virtual sensor array is built, so a novel method for 2-Dimentional (2-D) Direction Of Arrive (DOA) angle, carrier frequency and 2-D polarization angle estimation is proposed. The aperture of virtual array is several times to that of real ones, so it is more suitable for multi-sources parameters estimation in high noisy environments. The estimations of all these parameters can be got simultaneously, and automatically paired in calculating process with no spectrum searching. Similar performance with ESPRIT method can be achieved by least calculating burden, or far higher performance by high calculating burden. This algorithm can be used to any plane sensor array and this character would be very useful for applications. Simulations were presented to show the capabilities of this method. -
殷勤業(yè)，鄒理和，Robert W. Newcomb．一種高分辨二維信號(hào)參量估計(jì)方法[J]．通信學(xué)報(bào)，1991，12(4)：1-7.[2]唐斌，肖先賜．基于數(shù)據(jù)矩陣的信號(hào)頻率和二維方向估計(jì)[J]．電子科技大學(xué)學(xué)報(bào)，1996，25(3)：225-230.[3]Li Jian, Compton R T. Angle and polarization estimation using ESPRIT with a polarization sensitive array [J]. IEEE Trans. on AP, 1991, 39(9): 1376-1383.[4]Li Jian, Compton R T. Two-dimensional angle and polarization estimation using ESPRIT algorithm [J]. IEEE Trans. on AP, 1992, 40(5): 550-555.[5]Li Jian. Direction and polarization estimation using arrays with small loops and short dipoles [J]. IEEE Trans. on A., 1993, 41(3): 379-387.[6]Hua Yingbo. A pencil-MUSIC algorithm for finding two- dimensional angles and polarizations using crossed-dipoles [J]. IEEE Trans. on AP, 1993, 41(3): 370-375.[7]王建英，陳天麒．頻率、二維到達(dá)角和極化聯(lián)合估計(jì)[J]．電子學(xué)報(bào)，1999，27(11)：74-76.[8]王建英，陳天麒．用L陣實(shí)現(xiàn)頻率、二維到達(dá)角和極化聯(lián)合估計(jì)[J]．電波科學(xué)學(xué)報(bào)，2001，16(1)：30-33.[9]王建英，陳天麒．寬頻段空間信號(hào)頻率、二維到達(dá)角和極化聯(lián)[10]合估計(jì)[J]．中國(guó)科學(xué)(E輯)，2001，31(6)：526-532.[11]Compton R T. Adaptive Antennas: Concepts and Performance [M]. New Jersey: Prentice-Hall, 1988, Chapter 3.3.[12]Lemma A N.[J].et al. Analysis of ESPRIT based joint angle- frequency estimation [A]. ICASSP 2000, Istanbul, Turkey.2000,:- -
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