Surely the influence of some of these sources of noise can be modeled and filtered out. A University of Vienna currently conducts experiments to measure the gravitational force at very small sales, and they already have to do this with things like crowds moving about the city during rush hours.
I think you may be engaged in circular reasoning, here. Noise, by definition, is what can’t be modeled. The idea would be to have some model of the signal produced by the submarine’s machinery, and use that to reduce the noise (increase SNR) to the point that this nav system becomes useful.
Of course we would always filter out noise completely if it was that easy to model. My point was that some components of that noise (for example the moving parts of the engines) can be modeled very accurately.
Not a formal definition, but noise is simply the undesirable parts of the output of any information processing device, be it a sensor, an amplifier, or a transmission medium. But on Earth it's simply not practical as such. Gravitational waves observatories are used to detect events such as neutron star or black hole mergers that are otherwise unobservable, but they require an insane level of precision to be detected.
> LISA would be the first dedicated space-based gravitational-wave observatory. It aims to measure gravitational waves directly by using laser interferometry. The LISA concept has a constellation of three spacecraft arranged in an equilateral triangle with sides 2.5 million kilometres long, flying along an Earth-like heliocentric orbit. The distance between the satellites is precisely monitored to detect a passing gravitational wave.[2]
It also says the ESA LISA projected launch date is in year 2037.
Could 3 or 4 cubesats per cluster solve for space-based gravitational wave observation?
Could the gravitational wave sensors be mounted on Starlink or OneWeb ULEO Ultra Low Earth Orbit satellites with a 5 year lifecycle? (Also, how sealed and shielded do consumer radio telescopes like Unistellar's eVscope and eQuinox need to be to last a few years in microgravity? Maybe mando blackout noise.)
What is SOTA State of the Art in is it "matter-wave interferometry"?
> Physicists are using quantum math to understand what happens when black holes collide. In a surprise, they’ve shown that a single particle can describe a collision’s entire gravitational wave.
It sure is a medium! One Denver (IIRC) gravitational experiment could measure the field distortion caused by 100,000 people and cars at a local sports arena. [citation needed]
Is there a butterfly effect -like minimum pertubation for gravitational wave propagation through matter or massful things, at least?
Is there something that's low-enough power to not EM-burn a brainstem in a crytographically-keyed medical device with key revocation?
Does a fishing lure bobber on the water produce gravitational waves as part of the n-body gravitational wave fluid field, and how separable are the source wave components with e.g. Quantum Fourier Transform/or and other methods?
