I have a physics background, and I'm reading some physics data analysis papers where they keep throwing around the term coherent integration. I've done the google search, but the best answer I could come to was in coherent integation you, add voltages, and with in-coherent intergration you add power.
Now this may make more sense to a person with signal processing background, but I can't figure it out.
My specific papers, are about coherently integrating $n$ number of days of time-series data to find a weak signal.