Method for removal of LIDAR background backscattering by subtrac

Details Method for removal of LIDAR background backscattering by subtrac Method for removal of LIDAR background backscattering by subtrac

1981-03-27

1983-08-09

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

343 5W, 356342, G01C 308, G01N 2100

Patent

active

043975496

ABSTRACT:
In certain light detection and ranging (LIDAR) systems it is necessary to move the normal aerosol backscattering signal of the atmosphere so that a weak atmospheric turbulence signal of interest, which is present on the backscattering, may be observed. In this disclosure, only one LIDAR pulse is used wherein the return signal is fed equally into four separate delay lines. The four different delayed signals are subtracted to cancel the background and are amplified to give an output signal for which the background is largely removed while retaining the signal of interest. The signal of interest is then amplified and displayed and/or analyzed.

REFERENCES:
patent: 3650627 (1972-03-01), Noxon
patent: 4014019 (1977-03-01), Fetter
patent: 4015257 (1977-03-01), Fetter
patent: 4217584 (1980-08-01), Lombardi et al.
patent: 4289397 (1981-09-01), Itzkan et al.

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