Posted on 01/16/2017 12:22:48 PM PST by doug from upland
good idea
I want one in my phone. How cool would that be.
gravimetric navigation is used by the Navy on submarines, it’s accuracy and the gravity vector maps are all highly classified but yes it not only is possible it is used on a regular basis presently by our boomer subs.
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I learned something new. Thanks.
Mineral deposits??? Paging Todd from Gold Rush - that poor SOB needs all the help he can get.
Depends on who owns the mineral rights to stuff under your property.
In many states, the surface property owner is not the same as the subsurface mineral owner..................
I hope the EPA doesn't get wind of the plan, they hate it when people get clever without checking with them first so they can kill it.
Submarine navigation is a very complex problem, mostly you are trying to buy down the errors that inevitably accumulate over time in your primary inertial navigation sensors by periodically getting an occasional position fix from some alternative known source that doesn’t force you to surface. Gravity maps plays a role in getting that fix (one method, there are others) and not, to my knowledge, in the primary navigation function itself. But I’ve been known to be wrong.
The border between Gaza and Egypt is 14 Kilometers long. The tunnels have been found as deep as 20 meters or 65’.
Time to dig a trench from the Mediterranean to the Red Sea..............Kinda like Exodus in reverse...............
Every golf course groundskeeper will want one.
So they know where to place the dynamite.
They could have used one of these in Vietnam.
I know, I was just making a joke.
The elevation needs to be known within a hundredth of a foot as well. And how do you get the data out of the device? I'm sure in the lab they have it wired up to a laptop or something. I suppose they have miniature data sending modules though as well - like bluetooth? I could see where you could “seed” the border with these chips, and see how their readings CHANGE over time.
They would also detect vibrations from foot and vehicle traffic as well if they are sensitive enough. Or - have them combined with a miniature seismic sensor.
I've read where they have, or are developing, sensors for storm watching that measure air pressure, wind speed and velocity and temperature and then relay that to the ground. The sensors are the size of a grain of rice! An airplane drops a bunch of them into the storm cell and away they go.
The only thing with the seismic or the GPR is that you would need to keep doing the surveys to detect new tunnels. That would be the nice thing about a bunch of static sensors. Maybe just focus on vibration sensors that could also maybe pick up on tunnelling activities.
The only thing with the seismic or the GPR is that you would need to keep doing the surveys to detect new tunnels. That would be the nice thing about a bunch of static sensors. Maybe just focus on vibration sensors that could also maybe pick up on tunnelling activities.
Maybe I’m missing something. If it is sensitive enough to gegister being raised 3mm (1/8”), how does one usefully compare various geolocations, unless sensor height is minutely/absolutely accounted for? How can readings in an airplane he compensated?
ping for later
I know a guy who has small lake on his property next to the house. He drained the lake and ran heat pump hose under the lake bed.
Cool in the summer, warm in the winter.
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