自适应波束形成 Resources

Showing items tagged with "自适应波束形成"

Application Background Beamforming technology is a vital research area in array signal processing. The development history of array signals can be traced back to the adaptive antenna combination technology in the 1940s, which utilized phase-locked loops for antenna tracking. The core implementation of beamforming involves applying weighted summation to each array element's output, steering the antenna array beam toward a specific direction within a given time frame. The steering position that yields maximum output power for the desired signal provides the Direction of Arrival (DOA) estimation. Key Technologies The entire process can be implemented through iterative methods until predefined convergence criteria are met. Initial estimation values can be obtained using the McCulloch method. The regression estimation mentioned demonstrates consistent convergence and asymptotic unbiasedness. Simulation results from Koutrouvelis indicate that the regression method outperforms the quantile method. The regression approach requires minimal computational resources and is relatively straightforward to implement in code through matrix operations and optimization algorithms.

MATLAB 243 views Tagged

Implementation of Generalized Sidelobe Canceller (GSC) adaptive beamforming method with time-domain and frequency-domain filtering using LMS adaptive algorithm for speech enhancement. The package includes clean speech samples and noisy speech samples with different SNR ratios for experimental validation.

MATLAB 202 views Tagged

This file provides MATLAB programs for adaptive beamforming in communications, which automatically adjust the main lobe direction of the formed beam according to the direction of arrival (DOA) of incoming waves. The program demonstrates the adaptive process and displays the final beam pattern with comprehensive code implementation details.

MATLAB 190 views Tagged

Adaptive Beamforming Implementation using Sample Matrix Inversion (SMI) Algorithm This program demonstrates narrowband adaptive beamforming, ideal for beginners learning signal processing techniques with practical MATLAB code examples.

MATLAB 256 views Tagged