|
|
|
Not bothered much by this. The Olympics and all other sporting events ceased to have any moral value when they started accepting money in any form. Amateur sports are people running around on a field after work. Everything else is about professionalism and is ultimately corrupt so why not take drugs if they want to? Who cares about the welfare of athletes when there is money to be made?
Plesse igmore amd axxept applogies in adbance fir anu typos
While the “Enhanced Movement” stresses enhancements as a “personal” choice for competitors, the contest’s website says it “embraces enhanced athletes” and wants to push the “perceived limit” of what is possible, with the ultimate goal of setting new world records.
Apparently we are in perfect alignment as a nation with Peter Thiel.
According to his statement about buying NZ citizenship.
""
"In the course of pursing my international business opportunities, my travel, personal philosophical commitments and benefaction, I am happy to say categorically that I have found no other country that aligns more with my view of the future than New Zealand," he wrote.
""
gzt:While the “Enhanced Movement” stresses enhancements as a “personal” choice for competitors, the contest’s website says it “embraces enhanced athletes” and wants to push the “perceived limit” of what is possible, with the ultimate goal of setting new world records.
This can easily be imagined turning into a grotesque freakshow. The risks of some substances are likely to be high. I somehow doubt this is legal or compliant with medical ethics in many countries related to the off-label use and inevitable pre-race injections of many prescription only and illegal substances.
Indeed the risks of taking these types of drugs are huge.
Read about what happened to the East German girls doped up on steroids in the 1980s, it was quite horrifying.
gzt: The risks of some substances are likely to be high.
The risks of pushing your body way beyond what it was ever designed for (with long-term health consequences) in exchange for a small chance of getting a bauble hung around your neck are also unacceptable high, but people still do it. Destroying your body through stress fractures (gymnastics) is not much different from destroying it with steroids.
Pilots will have revert to using a sextant and star charts.
Sometimes I just sit and think. Other times I just sit.
Love the Mentour channel I often watch before bed. Fascinating information and he explains in a way that anyone can understand. You never know when you might need to land a plane in an emergency :)
One of my favourites videos is of an 80 year old landing a plane next to her dead pilot husband. A real whiskey tango moment.
kingdragonfly: The END of GPS for Aviation?! Spoofing At Work
A lot of GPS firmware is incredibly bad, with the weird pattern of cost being inversely proportional to how flaky the software is. In other words a $20 uBlox will be much, much more resistant to spoofing than a $20,000 reference GPS receiver. One great example of this is the middle-of-the-earth attack where you set the satellite orbit distance to zero so the receiver thinks it's at the centre of the earth and goes into an infinite reboot loop as it keeps dividing by zero. This is a noddy-grade problem, there are multiple safety checks that would catch this and all of them are non-present in the receiver.
You can also deal with a lot of spoofing, particular the most common broadcast-a-stronger-signal one, in software, however for avionics stuff the qualification cycles are very long so it's not a quick fix. There are also more sophisticated attacks like code-phase coherent GPS spoofing where you slowly increase the level of the fake signal until it takes over a live satellite lock, but that's not something you can just spray around like the brute-force stronger-signal attack but need to carry out specific targeting.
So it's not the end of the world yet, we're just in a situation where a lot of receiver software never even considers that it'd be getting anything other than a benign, legitimate signal.
Just turn the reference GPS source off in those areas and turn it back out outside those areas. The Time source isn't going to drift by much in. and an IMU is still going to be relatively accurate.
"it will maintain RNP0.1 for 8 minutes, RNP0.3 for 20 minutes and RNP1 for 2 hours. That means that in 8 minutes the error is no more than 0.1 nautical mile with 95% confidence, in 20 minutes it is no more than 0.3 nm with 95% confidence and in 2 hours the error is no more than 1 nm again with 95% confidence."
That's positional accuracy so its not too bad all things considered.
Jase2985:
That's positional accuracy so its not too bad all things considered.
I'm not so sure: NIST can't even track down someone using the wrong sort of foot!
Jase2985:
Just turn the reference GPS source off in those areas and turn it back out outside those areas. The Time source isn't going to drift by much in. and an IMU is still going to be relatively accurate.
"it will maintain RNP0.1 for 8 minutes, RNP0.3 for 20 minutes and RNP1 for 2 hours. That means that in 8 minutes the error is no more than 0.1 nautical mile with 95% confidence, in 20 minutes it is no more than 0.3 nm with 95% confidence and in 2 hours the error is no more than 1 nm again with 95% confidence."
That's positional accuracy so its not too bad all things considered.
That doesn't quite tell the whole story from a practical use point of view.
In aviation augmentation is achieved using multiple ground reference stations spread over a wide area. The ground station correction factors are sent to a geo stationary satellite for broadcast to aircraft. By the way we don't have this augmentation in New Zealand...... yet.
I'm not saying the signals couldn't be spoofed or jammed but the area affected could be quite large. Switching of reference sources may have a much larger effect than you think. Though it's possible the augmentation system can ignore an obviously incorrect signal, I'm not sure how it would handle such a situation.
Secondly when GPS is being used as the means of being able to conduct an instrument approach, (irrespective of whether augmentation is in use) not being able to determine accuracy to within RNP of 0.1 or 0.3 ( depending on the accuracy required) means GPS cannot be used to carry out an instrument approach. It doesn't matter that the GPS might be capable of 0.1 for 8 minutes, 0.3 for 20 minutes etc, it still cannot be used for an approach if it cannot confirm its integrity 100% of the time.
In an area of spoofing /jamming and if this spoofing/jamming affects aviation receivers it will not be possible to use GPS 100% of the time for instrument approaches. That's potentially a significant issue.
Edit.
This isn't something new. It's a problem that's been recognised from a long way back. There's been a lot of resources dedicated to fixing the issue.
Sony Xperia XA2 running Sailfish OS. https://sailfishos.org The true independent open source mobile OS
Samsung Galaxy Tab S6
Dell Inspiron 14z i5
|
|
|