Linear Array Focusing Beamforming Algorithm Approach

The key concepts discussed in this article include the Linear Array Focusing Beamforming Algorithm, 3D surface plotting, and pseudocolor visualization techniques. The Linear Array Focusing Beamforming Algorithm is an acoustic imaging technique that focuses sound waves on target areas to enhance image resolution. In implementation, this algorithm typically involves phase and amplitude manipulation across array elements using delay-sum operations, where appropriate time delays are applied to each sensor output to coherently combine signals from the focal point. The algorithm can be optimized through MATLAB functions like phased.FocusedSteeringVector for calculating steering vectors and phased.TimeDelayBeamformer for applying focusing delays.

3D surface plotting represents a data visualization technique that displays information in three-dimensional format, enabling better understanding of data relationships and trends. This can be implemented using MATLAB's surf or mesh functions, where the z-axis typically represents beamforming output power while x and y axes correspond to spatial coordinates. Proper shading and lighting parameters can be adjusted using functions like lighting phong and material dull to enhance depth perception.

Pseudocolor visualization employs color mapping techniques to represent different data value ranges, making data distribution patterns more intuitively visible. This is commonly achieved through MATLAB's pcolor function combined with colormap adjustments using commands like colormap(jet) or colormap(hot). The colorbar function (colorbar) can be added to provide reference scales for interpreting numerical values对应的颜色映射.

By integrating these techniques, researchers can effectively analyze and interpret acoustic data, leading to more accurate decisions in imaging applications. The complete workflow typically involves signal preprocessing, beamforming computation using focused steering vectors, and visualization through combined 3D and pseudocolor representations.