Denoised Modified Incoherent Signal Subspace Method for DOA of Coherent Signals

Hu, B
Li, XJ
Chong, P
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2018 IEEE 7th Asia-Pacific Conference on Antennas and Propagation

Incoherent signal subspace method (ISM) is ineffective to deal with direction of arrival (DOA) of coherent wideband signals. Although modified methods were proposed to solve this drawback, such as ISM based on modified MUSIC (MMUSIC-ISM), its performance will seriously deteriorate when the signal-to-noise ratio (SNR) is low. This paper proposes a method to construct the covariance matrix, namely denoised modified ISM (DMISM), which attempts to effectively reduce the influence of stationary white Gaussian noise. Numerical experiments affirm that DMISM outperforms MMUSIC-ISM.

Modified ISM; Coherent signals; Low SNR; Spectrum peaks; Denoised matrix
The 2018 IEEE 7th Asia-Pacific Conference on Antennas and Propagation (APCAP), Auckland, New Zealand, 5 - 8 August 2018.
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