It's a discrete signal from two radar devices from one day. Signal is sampled every 333 ms. So at axis x there is a timeline, axis y is a current radar value. We use radar for object detection. The peaks are indicating that there is an object in front of radar and the rest is noise or a background. As you can see blue one is a better then red one (peaks are higher and background is lower).
Problem is that we need to find technique how to measure quality of that signal (is there many peaks? noise is low? or signal is all noise and we can not identify signal?). I'm novice in this area so any help will be welcome. We've started with standard deviaton of signal but i'm not sure if it's a right way.