Explore MATLAB source code curated for "色噪声" with clean implementations, documentation, and examples.
This documentation contains three MATLAB code segments demonstrating generation of Gaussian random signals, Gaussian white noise, and colored noise, along with numerical characteristic calculations, spectral analysis, power spectrum analysis, and basic low-pass filter design explanations.
MATLAB simulation diagrams of the Duffing chaotic oscillator system demonstrating weak signal detection under noise-free, white noise, and colored noise conditions through parameter selection and signal processing techniques, including implementation approaches for chaotic system modeling and noise filtration algorithms.
Generation of complex noise signals, including Gaussian white noise and colored noise (with definable filters)
This study analyzes the Incoherent Signal Subspace Method (ISM) for wideband source DOA estimation and applies a modified MUSIC algorithm with data matrix conjugate reconstruction to enhance resolution and enable coherent source detection. The Coherent Signal Subspace Method (CSM) is discussed with analysis of focusing matrices and frequency selection impacts, including criteria for optimal focusing matrix and frequency selection. For colored noise environments, a novel DOA estimation approach integrating propagator operator concepts with TCT focusing matrices is developed, enabling efficient noise covariance estimation directly from array signals without complex eigenvalue decomposition.
While traditional MUSIC algorithm provides super-resolution capability, it fails in modern pulse radar systems where additive noise often exhibits colored noise characteristics. This article presents an enhanced approach - the Root-MUSIC algorithm, which replaces spectral search in conventional MUSIC with polynomial root-finding techniques. The implementation includes MATLAB code demonstrating signal covariance matrix estimation, eigenvalue decomposition, and polynomial coefficient extraction for improved direction-of-arrival estimation.