FPGA-based dual-channel readout and centroid algorithm for cross-strip anode photon detectors

Crossed-strip anode single-photon detectors have been widely adopted in high-resolution optical imaging systems due to their two-dimensional event localization capability. However, under large-area and high count-rate conditions, conventional readout architectures are limited by bandwidth and processing latency, hindering real-time centroid computation. This study presents an FPGA-based dual-channel signal processing architecture for high-speed centroid extraction in crossed-strip anode detector