I have to measure distance of an machine from 2 different locations around 1-2 km range. in previous threads I came to know that using rf waves it ca be done. General concept is the time taking between transmitting and receiving the signal.
According to my application I have to keep two transmitters and two receivers on my machine and respective transmitters and receivers on my both locations and start the operation.
But I am not understanding how to identify the frequencies. Because i need 4 different frequency ranges for this. so please help me.
According to my application I have to keep two transmitters and two receivers on my machine and respective transmitters and receivers on my both locations and start the operation.
But I am not understanding how to identify the frequencies. Because i need 4 different frequency ranges for this. so please help me.