Spring 1999 NOC contact drill

Mailman List Mirror (Read Only)
1

Sounds like there is a need for increased use of highly accurate positioning
systems.

Tain't that easy. The SOP is to use the copper wire buried with
the [fiber, sewer, etc] and excite it with 38 Khz; then sniff for
it.

But the LF signal can and does couple to OTHER conductors in the
area, confusing everything. Often the only sure way is to hand dig
down to what you think is there.... c a r e f u l l y....

2

:Tain't that easy. The SOP is to use the copper wire buried with
:the [fiber, sewer, etc] and excite it with 38 Khz; then sniff for
:it.

Would it be possible to use sonar to detect cables?
Is this possible? Burying some sort of emitter at
regular intervals? Does lit sheilded fiber give any
sort of emmission that could at least hint that it's
buried there?

Just brainstorming anyway.