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Originally Posted by Sonoboy
I had 18 Nimitz spread out evenly along 180 degrees to my front, since I was using the sphere array for this experiment. They were successively spaced in intervals of 1nm starting at 1nm from ownship. All speeds were at 15kts. I simply changed depth under the layer until I was able to hear a contact, then find the exact depth at which contact was gained. I recorded 3 trials, each with a different layer depth. The graph below also has trendlines included. I would assume that layer depth in this experiment would also equal contact's altitude above the layer (I havent tested with submarines yet).
http://img228.imageshack.us/my.php?image=layergk9.jpg
The shadow zone would be to the right of the curve, and the detection zone to the left. |
Was the SSP for that data Surface Duct or Convergenze Zone?