Ultrasonic module

I'm wanting to use an ultrasonic module for location as my target will change height. This is what I have, they have a trigger and an echo for the signal. From what I have been able to surmise, there is a short burst on the trigger followed by a listening time for the echo. The time from the trigger to the echo gives the distance, so this should be an analog sensor. With the controller software I only read about digital sensors and all analog is used for servo motors. Is there a way to use this sensor? I could write an additional Arduino code, but I don't know how to get the software to use it.