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Originally Posted by joegrundman
@Munchausen
constant distance reports are not as accurate as you say, but still very helpful. In practice constant distance can be with an aob anywhere between 60 and 90. At 90 it tends to report moving away(and sometimes at 70 or 80)
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It's definitely a barn-sized area to work with. But my tests show "constant distance" averages about the same number of degrees either side of 90 AOB. For example:
In the above screenshot, the first time the sonar man called out a constant distance was on a bearing of 280. His final bearing before reporting that the target was going away was 339. That's about 60 degrees. Splitting the difference, I drew a 30-degree angle off the first bearing (as shown above) ... then drew a line perpendicular to it to determine the target's course.
The target's course measured 070. Actual course, according to the SH4 Mission Editor, was 70.0484 ... pretty close.
It would be nice if the "barn-sized" area was always a sixty-degree slice of pie ... then you could simply add thirty degrees to the first "constant distance" report to get the perpendicular.