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Accession number;03A0049490
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| Title;Improvement of DOA Estimation Accuracy of the Signal from the Boresight Direction Using UCA-RB-Root-MUSJC in the Tracking Radar System. |
| Author;
SUZUKI JUN'ICHIRO
(Toshiba Corp., Komukai Work.)
UNETA MICHIO
(Japan Def. Agency, Tech. Res. and Dev. Inst. 3rd. Res., JPN)
ODACHI NORIAKI
(Toshiba Corp.)
WATANABE TSUTOMU
(Toshiba Corp., Komukai Work.)
SHOKI HIROKI
(Toshiba Corp.)
HOKAZONO HIROKAZU
(Japan Def. Agency, Tech. Res. and Dev. Inst. 3rd. Res., JPN)
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Journal Title;IEICE Transactions on Communications (Japanese Edition)
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Journal Code:S0622C
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ISSN:1344-4697
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VOL.J86-B;NO.1;PAGE.57-67(2003)
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| Figure&Table&Reference;FIG.9, REF.11 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;On two-dimensional (azimuth, and zenith angle) angle measurement (2D-AM) using usual MUSIC (multiple signal classification), two-dimensional sweep of evaluation function is essential. Here was already proposed UCA-RB-Root-MUSIC (uniform circular array-real beamspace-Root-MUSIC) enebling 2D-AM only by sweep of zenith angle direction when antenna arrangement was equinterval circular array. As this method had a merit that evaluation function of sweep could be one-directionally carried out in spite of its 2D-AM, it had a problem that estimation precision of boresight direction reduced in principle. In this paper, was proposed a method to solve said problem at an aim to apply UCA-RB-Root-MUSIC to high precision angle measurement processing based on tracking radar. The proposed method enabled high precision angle measurement even under a condition where a target came from the boresight direction under flying, by carrying out pretreatment converting receiving signals as ones obtained by shifting their angle areas to zenith angle direction. Here was described that verification based on formulation and simulation of the proposed method and effective results for actual signals from pseudopoint targets could be obtained. |
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