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A new direction of arrival(DOA) estimator in the presence of interference is presented in this paper. To suppress interference, the oblique projection is constructed with the prior knowledge of interference sources, which is used to filter undesired signals out. After filtering, DOAs of signals are estimated by the improved L1-SVD algorithm, in which the noise power is estimated to solve the optimization...
Passive direction finding is the main capability of AUVs. Methods of direction finding based on single vector are reviewed in this paper. Coherent interference of AUVs itself is very hard for acoustic direction finding system and traditional noise control method can overcomes strong interference but forms blind spots in the interference direction. In order to achieve the total space DOA estimation,...
Estimation of the incident waveform directions, or direction of arrival (DOA) estimation, is an essential problem in sonar array processing. A sonar array usually consists of a large number of elements, and the associated data processing complexity is extensive. An approach to reduce the computation is to map the data from full-dimension element space into a lower dimension beam space, through a linear...
The source parameters are usually estimated in the noise environment. In the case of the strong interference, the conventional approaches fail. Hence, interferers have to be removed before estimating the source parameters. In this paper, a new method is presented to suppress strong interference, and the source number and the direction of arrival (DOA) are evaluated by incorporating of Gerschgorin...
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