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Free keywords:
Lidar
Raman effect
Optics in computing
Remote sensing and sensors
Abstract:
Because of the effect of defocusing and incomplete overlap between the laser beam and the receiver field
of view, elastic lidar systems are unable to fully capture the close-range backscatter signal. Here we propose
a method to empirically estimate and correct such effects, allowing to retrieve the lidar signal in the
region of incomplete overlap. The technique is straightforward to implement. It produces an optimized
numerical correction by the use of a simple geometrical model of the optical apparatus and the analysis of
two lidar acquisitions taken at different elevation angles. Examples of synthetic and experimental data
are shown to demonstrate the validity of the technique.
