I've already made arduino radar (sonar) using an HC-SR04 sensor and it works perfectly fine showing all the detected obstacles on radar screen (using processing IDE). My questions is: Is it possible for HC-SR04 sensor to distinguish 2 or more separate objects? The reason I ask this is because I want my sonar to detect moving objects only, but in order for it to work the sensor needs to know which object is which. Since these are very cheep sensors which use the same frequency and they only measure distance while the additional data inside the returning echo remains hidden (except the time it traveled), I highly doubt that this is possible at all, but I need confirmation from more experienced people. What do you think? If it is somehow possible, any suggestions are welcome on how to do it.
Thank You in advance.