NEW STEP BY STEP MAP FOR HYDROGRAPHIC SURVEY IN BANGLADESH

Knowledge under 3dB can't be made use of mainly because it establishes the maximum profiling array of the machines. It may be found that SNR is near to 0 dB over and above 10m-12m depth. Once again, all through slack drinking water, the cut off line for 3dB extends further than because of the presence of superior turbidity inside the water columns.