# Distance Measurement Device

D

#### Drew

Jan 1, 1970
0
Hi I am wondering if there is a two piece electronic device that
measures the distance between the two "receiver/transmitters". For
example, I know that there are devices that use sound waves to time the
beam's travel from the device to an object and back, and uses the speed
of sound constant to find the distance. I was wondering if this kind of
device is available using two receiver/transmitters. So if there are
two of these devices, one or both will be able to tell how far apart
they are from each other without using a line of sight. Thanks

Drew

D

#### Drew

Jan 1, 1970
0
signals? I was thinking that if both units are transmitters and
receivers, they can relay unique radio signals, one to the other and
then back again, and the first can time this and divide by the speed of
the radio signal and then find the distance. I know that this can be
done with stationary objects (using sound waves to bounce off walls). I
could be wrong I guess, but it just seems to me that with all this
technology today something this "simple" in comparison to other devices
must exist. Can anyone think of a device that even uses this principle,
even if the distance factor isn't its main purpose? Thanks again.
Drew

J

#### John G

Jan 1, 1970
0
Drew said:
signals? I was thinking that if both units are transmitters and
receivers, they can relay unique radio signals, one to the other and
then back again, and the first can time this and divide by the speed
of
the radio signal and then find the distance. I know that this can be
done with stationary objects (using sound waves to bounce off walls).
I
could be wrong I guess, but it just seems to me that with all this
technology today something this "simple" in comparison to other
devices
must exist. Can anyone think of a device that even uses this
principle,
even if the distance factor isn't its main purpose? Thanks again.
Drew

Aircraft control radars but they aint cheap.

D

#### Drew

Jan 1, 1970
0
Ok guys thanks for the help.

Drew

D

#### Drew

Jan 1, 1970
0
Thank you that's very helpful. I'll look into these more. Thanks again.

Drew

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