Provided the information could be posed in a Q&A style format, I think this is OK. It's perfectly OK to answer your own questions, so this might be one case where this is a good idea.
I know I asked a couple of questions that I intended to answer myself to get things moving on this site... but I received too many good answers --- probably better than ...
Your SE.DSP question is still not clear to me:
Is there an ordinal variable (e.g. time) to help you with separating latent variables? Or is the problem purely instantaneous?
How can you quantify "obtain fairly accurate composition"?
What are your sensor characteristics (esp. regarding saturation)?
Your question, IMHO, is not yet precise enough, or ...
The rules appear to allow such questions if you state them the right way. Quoting Signal Processing Stack Exchange help center:
Some subjective questions are allowed, but “subjective” does not mean
“anything goes”. All subjective questions are expected to be
constructive. What does that mean? Constructive subjective questions:
inspire answers ...