1：Experimental Design and Method Selection

The study employs two controller designs: one based on the Taguchi method and the other on the Artificial Neural Network (ANN) method. These controllers process beam location information from an Optoelectronic Position Detector (OPD) and generate outputs to steer the beam using a Fast Steering Mirror (FSM).

2：Sample Selection and Data Sources

The experimental setup includes a terrestrial FSO link for a range of 0.5 km at an altitude of 15.25 m, with a system dynamics study and calibration of optoelectronic equipment.

3：List of Experimental Equipment and Materials

Optoelectronic Position Detector (OPD-PTQ100),Fast Steering Mirror (FSM),Piezo driver module (E-616),Piezoelectric actuators (S-325-Piezo-Z/Tip-Tilt platform),Digital to Analog converter (D/A),Analog to Digital converter (A/D),MATLAB for controller implementation

4：Experimental Procedures and Operational Workflow

The beam centroid is computed using a Mono-Pulse Algorithm (MPA). The controllers process the beam location information from the OPD and generate the necessary outputs to steer the beam with the FSM. The performance is assessed in terms of coefficients of correlation, correction speed, control exactness, centroid displacement, and stability of the receiver signal.

5：Data Analysis Methods

The performance of the controllers is quantitatively measured through experimental results, including coefficients of correlation, correction speed, control exactness, centroid displacement, and stability of the receiver signal.