Re: Measure distance behind walls

On Mon, 30 Oct 2006 17:34:13 -0800, Giorgis wrote:
Joel Kolstad wrote:
"Giorgis" <giorgis.3erolas@xxxxxxxxx> wrote in message
news:1162246818.609312.22350@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Is it possible to measure distance, even behind walls to a few cm
accuracey over 50m ?

If you want to go through walls, how did you intend to define the endpoint for
your distance measurement? Are you thinking between, e.g., a transmitter and
receiver that might be on opposite sides of a wall?

Yes lets say I would like to mwasure the distance between the corners
of my house with no line of sight. Only with two devices at either end.

Is it possible

Yes, for very large amounts of money.

Why not just pick a third point, visible from both A and B, call it C,
and just trig it out?

C
/ \
/ \
/ \
/ \
/ _____ \
/ [ ] \
A [HOUSE] B
[_____]

Measure the distances AC and AB, and the angle ACB, and it should be just
arithmetic from there.

Good Luck!
Rich



.

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