Underwater ghost imaging with pseudo-Bessel-ring modulation pattern

In this study, we propose an underwater ghost-imaging scheme using a modulation pattern combining offset-position pseudo-Bessel-ring (OPBR) and random binary (RB) speckle illumination. We design the experiments based on rules to order OPBR patterns. retrieve ghost images by beam with different sizes. The obtained have better contrast-to-noise rate compared RB imaging under same conditions. verify results both in experiment simulation. addition, also check image quality at turbidities. Furthermore, demonstrate that provides other objects. proposed method promises wide applications highly scattering media, atmosphere, turbid water, etc.