Directions of arrival estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis
An algorithm of DOA estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis was proposed, which can realize exact DOA estimation in underdetermined condition. First, the architecture of digital channelized receiver based on polyphase f...
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| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2009-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74649494/ |
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| Summary: | An algorithm of DOA estimation for multi frequency-hopping signals based on digital channelized receiver and spatial time-frequency analysis was proposed, which can realize exact DOA estimation in underdetermined condition. First, the architecture of digital channelized receiver based on polyphase filter banks was realized. Second, a clear time-frequency representation was gained by time-frequency analysis. Third, effective hops were selected from the time-frequency distribution, and every hop’s spatial time-frequency matrix was built. At last every hop’s DOA was estimated based on spatial time-frequency method. The simulation results demonstrate that the estimation algorithm is effective and efficient. |
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| ISSN: | 1000-436X |