Information under 3dB can't be utilised mainly because it establishes the maximum profiling variety of the equipment. It can be observed that SNR is near to 0 dB past 10m-12m depth. All over again, all through slack water, the cut off line for 3dB extends further than a result of https://hydrographicsurveyinbangl18393.dgbloggers.com/32596013/new-step-by-step-map-for-hydrographic-survey-in-dhaka