Optical backscatter point sensor (OBS) - Coastal WikiDec 4, 2007 . This article gives an introduction of an optical backscatter (OBS) point sensor, which can be used to measure turbidity and the concentration of.از backscatter نوری ویکی بازتاب,Acoustic backscatter profiling sensors (ABS) - MarineSpecies .Aug 3, 2011 . Acoustic backscatter (ABS) measurement is a non-intrusive technique for the monitoring of suspended sediment particles in the water column.Backscatter - WikipediaIn physics, backscatter (or backscattering) is the reflection of waves, particles, or signals back to . If the slope is gentle, then optical fiber has a satisfactory loss characteristic. The loss measurement by the backscattering method allows.