Balance coherent detection technology of coherent lidar
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1.
Military Representative Office of Chinese People's Liberation Army Accredited in No.209 Institute, Chengdu 610041, China;
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2.
Southwest Institute of Technical Physics, Chengdu 610041, China
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Received Date:
2013-12-11
Accepted Date:
2014-03-24
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Abstract
In order to analyze the influence factors of signal-to-noise ratio(SNR) of balanced coherent detection, balanced coherent detection process was studied and the SNR formula was derived based on the mathematical model. A balanced laser detector for signal receiving was developed, and Mie scattering echo signal of aerosol particles was detected by means of the coherent radar prototype. The results show that balanced laser detector is with very low noise and high sensitivity, and can detect the laser echo signal of Mie scattering of aerosol particles.
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