A Novel Algorithm for Weak Signals DOA Estimation under Intensive Interferences

Chai Li-gong; Luo Jing-qing

Volume 27 Issue 10

Oct. 2005

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Article Navigation > Journal of Electronics & Information Technology > 2005 > 27(10): 1517-1520

Chai Li-gong, Luo Jing-qing. A Novel Algorithm for Weak Signals DOA Estimation under Intensive Interferences[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1517-1520.

Citation:

Chai Li-gong, Luo Jing-qing. A Novel Algorithm for Weak Signals DOA Estimation under Intensive Interferences[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1517-1520.

Chai Li-gong, Luo Jing-qing. A Novel Algorithm for Weak Signals DOA Estimation under Intensive Interferences[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1517-1520.

Citation:

Chai Li-gong, Luo Jing-qing. A Novel Algorithm for Weak Signals DOA Estimation under Intensive Interferences[J]. Journal of Electronics & Information Technology, 2005, 27(10): 1517-1520.

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A Novel Algorithm for Weak Signals DOA Estimation under Intensive Interferences

Received Date: 2004-05-20
Rev Recd Date: 2004-11-15
Publish Date: 2005-10-19

Abstract

Abstract

A novel algorithm both for restraining intensive interferences and for estimating weak signals' DOA(Direction Of Arrival) information is presented on the basis of uniform linear array. Under the assumption knowing the number and directions of intensive interferences, first, the algorithm forms the beam on the sub-array level with the improved beam-forming method to constrain interferences; then, the algorithm estimates weak signals' DOA information based on all of these weighed sub-arrays. When both the desired signal and the interference are in the same beam, the merit of this algorithm shows higher estimation accuracy than that of high-resolution methods without improving the SNR for weak signal. Both the theoretical analysis and computer simulation indicate that the algorithm is effective.

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References

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