Abstract
Ghost imaging (GI) has great potential applications in remote sensing because of its obvious advantage of high sensitivity in detection. However, there is rare investigation for GI in the scenario of background light environment or signal disturbance. In this paper, based on the theory of statistical optics, the imaging signal-to-noise ratio (SNR) of GI in background light environments is deduced and the influence of background light to the quality of GI is clarified. The analytical results suggest that the imaging SNR of GI is not only related with the measurement number and the object’s transmission area, but also depends on the signal power to background power ratio illuminating on the object and the speckle’s coherence areas of signal light and background light at the object plane. Furthermore, the latter analytical results are also backed up experimentally.
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