I am trying to improve the dynamic range of an ADC, by using a second ADC which is the original signal attenuated by a known amount (\$x\$ dB).
So the two signals could be approximated (ignoring any phase differences):
\$y_1(t) = A\sin(\omega t)\$
\$y_2(t) = y_1(t)\$ attenuated by \$x\$ dB
I originally thought about solving this problem by using a 'stacked ADC' approach, which would be to have both signals be analysed and to choose the output of the adc which has not saturated.
However given that the frequency and attenuation of the waves would be a known quantity, would it be possible to combine or 'stitch' these waveforms together into one waveform mathematically by post-processing, and improve the dynamic range that way?
The problem was put to me by my professor but I'm at a loss as to how I would go about it.