KEYWORDS: Scattering, Signal to noise ratio, Optical communications, Signal detection, Sensors, Interference (communication), Signal processing, Light scattering, Telecommunications, Modulation
A novel signals' receiving and data processing approach is proposed for optical scattering signal transmitting. This
proposed approach consist of three steps: firstly, the signals are received by two detectors in terms of spacial diversity
synchronously, and then collected by high speed data collection card afterwards; Secondly, the 1.5 dimension spectrums
of the collected signals in step 1 are calculated; Finally, the cross-correlation of the 1.5 dimension spectrums is used to
decrease the non-gauss noise. In order to validate the proposed approach, an optical scattering signal receiving system
has been designed based on two detectors and other ordinary instruments. The experimental results indicate that the
designed system can demodulate the optical scattering signals accurately even if the noise-signal ratio (SNR) is as low as
-25dB. It proves to be effective and adequate in the secure optical scattering communication.
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