LGN1 said:
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I'm reluctant to change any sensor parameter without proper testing and understanding of the relationship between this parameter and the other.
As long as one does not know the real effect of varying the MiniumumSurface value, I think a better solution would be to randomly set the max. height parameter of the ASDIC sensor depending on the water depth. This would be a much better 'controllable' approach.
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So far as I am aware, the only result of changing the minimum surface area is to change the ease with which the target is acquired by asdic. You may be right, that a value of 0.0 will be replaced internally by a default value; it certainly happens for one of the U-boat mass measurements, I forget which.
However, it is impractical to use maximum heights of sensors because they can vary. Remember that the name of the sensor is not associated with the data, therefore it is essential to tag the asdic minimum surfaces with some unique value. (0.0 is not unique here, incidentally.)
I've done a lot of testing with current asdic sensor values today, and they seem to be quite good. In shallow water (<50m deep), the escorts can still locate a VII U-boat with minimum surface=300, although they lose contact fairly quickly. But that is what we want.
Another factor is that probably the tiny type XXIII will NOT be located by asdic in shallow water. And that is correct too (more or less).
Stiebler.