I don't think it needs further proving or disproving... However, I could easily prove that a two-legged series of equidistant observations while moving will yield a correct solution for true course.
I need to review Dr.Sid's logic now. There was a time when I was considering adding a least-squares TMA tool to MoBo, and I just haven't gotten around to it. I think Sid's least-squares method didn't even require that the observations be spaced at equivalent time intervals. On the one hand, that's pretty cool, on the other hand, purests might argue that the method would require more sophisticated computing power than may have been available at the time.
Your example strikes a nice balance in that it appears to be a valid TMA solution using methods that could have been employed with the technology available to tracking parties of the WWII era.
If you like, I can post a single MoBo image that will simply prove the concept works. If there is any interest from people wanting to know how I did it, I can follow up later or perhaps on another thread with more detailed MoBo instructions.
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