WCL Limitations
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The area around the flight level where the laser beam enters into the field of view (FOV) of the receiving telescope progressively is "overlap zone", which is about 100 m, depending on the transmitted laser beam divergence, the FOV of the receiving telescope and the angel between the axes of the laser beam and telescope. The processed data are already overlap corrected by calculated overlap factors. However the correction may not be so accurate for all of the profiles due to the drifting laser beam pointing direction.
Also, thei near range signals can saturate when the aircraft is flying through dense clouds. And in this situation the clouds cannot be fully penetrated by the lidar, the signals are attenuated dramatically with increase distance. |