Signal-to-Noise Dependence on the Received Object and Background
Power in Laser Systems
Žarko Barbarić, PhD (Eng))
Mirjana Nikolić, MSc (Eng)1)
The influence of
the solar radiation and object reflectance on the power received from an object
and background by laser systems, on the wavelength of 1.064
, is analyzed. The level of the power received from an object
and background, limited by the receiver field of view, depends on solar
irradiance variation, and object and background reflectance. The dynamic range
of the received optical noise power is about 127 dB. The level of the received
optical power reflected from the object and background, defines signal-to-noise
ratio of the detector. The change of the signal-to-noise ratio for constant
value of the received reflected laser radiation
, as the function of the background power change
, is analyzed. The maximal change of the signal-to-noise ratio
of about 2 dB, is obtained for 
.
Key words:
lasers, optical power, solar radiation, radiation influence, light reflection,
reflection coefficient, irradiance, signal-to-noise ratio.
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