LiDAR Signal Fusion Method Based on AI-Driven Saturation Detection and Nonlinear Calibration (opens in new tab)

Ground-based dual-channel Rayleigh LiDAR provides continuous observations of the middle and upper atmosphere, but reliable full-altitude profiling remains difficult. Strong near-range echoes may drive the low-altitude channel into nonlinear compression or saturation, whereas weak high-altitude echoes are often affected by severe signal-to-noise-ratio degradation. Mismatch between the low- and high-altitude channels can also introduce discontinuities in the overlap region, which may propagate ...