Posted on 08/23/2017 7:05:21 AM PDT by beebuster2000
Can a Freeper with experience "weigh" in please?
I am beginning to think the common problem in the recent USN accidents is a totally calcified chain of command where no one has the authority to take action in a moment of crisis. someone knows there is a problem but has to ask someone who has to ask someone for permission to act.
Isn't there ONE OFFICER on deck with the total and absolute responsibility and authority to alter course in real time to avoid collisions? Or is there no one person until way up the chain who can make a decision ?
ICBMs do not use GPS. ICBMs predate the GPS network by many years. GPS updates are too slow. ICBMs use inertial guidance systems exclusively.
I have a feeling in today’s Navy lots of Sailors are afraid to sneeze without direct permission.
The same ones who agreed that they would follow and issue orders to fire on Americans, in order to be promoted?
The messages from the satellites are protected with long cyclic redundancy checks in order to prevent garbled messages from contributing to the calculations.
In short, GPS satellites do not tell you your position. They tell you their positions. From that the receiver computes its own position.
Spoofing would require replacing the temporal tables and time fix transmissions from multiple satellites in such a manner to seem reasonable to the receiver's algorithm. That is so unlikely. Jamming the signals altogether would be more likely, merely causing fallback to inertial navigation.
VERY bad news. It means the receivers are buggered to give false results near Russian targets.
DEEP sabotage, perhaps at the chip level*, Perhaps at the software vendor level**, perhaps at the factory/depot level***.
* Chinese manufactured chips?
** Software outsourced to who, Russia, India, China?
*** Native traitors?
You don't believe that not knowing your your exact position on the globe prevents your radar from seeing a ship that big, do you? Is not knowing your position something that would keep someone from looking out of the window? Do you think that some alarm wouldn't be triggered if the GPS disagreed with the inertial guidance by a worrisome factor? Do you even think that the GPS gives our ships the location of other ships?
In short, something else is entirely amiss. I hope it is not just gross incompetence, but it does look that way to me. Even if those ships are deliberately ramming ours ... the destroyers are fast and nimble. There is no way a freighter or a taker could hit one without poking out the eyes of everyone on our ship.
My concern is more that a GPS guided weapon, whether a smart bomb, a cruise missile, or an incoming ICBM warhead could already be systematically diverted away from its target.
No one to look out the window on any of those platforms...
GPS is based on a more advanced system...
I don't think GPS can be hacked. It could certainly be jammed.
Sonar ping
Yes it is. ICBMs were build long before GPS. ICBMs also must be self-contained.
Unless the [Chinese made COTS] GPS chips themselves were boogered to take valid GPS data and report an offset position only when certain conditions were met.
Approach a given endpoint at a certain velocity and the chip subtly offsets the reported position to cause a miss, for example.
I don't think the military purchases hardware from the Chinese, nor would they allow their vendors to do so.
Military procurement is a very careful process.
Besides, this is not a GPS problem. Not by a long shot.
Yeah. I know. I used to work for a guy who deliberately and systematically falsified test results.
At this point I haven’t a clue and won’t start a theory - just saying that it is an unlikely coincidence and I can’t imagine that in a imminent collision situation nobody has authority to take evasive actions.
from the wsj today:
Ships are obliged to keep their Automatic Identification System on. The AIS gives inland stations and other vessels live information about a ship’s position, speed and course.
Global marine regulator, the International Maritime Organization, requires AIS to be fitted aboard all oceangoing vessels of 300 tonnes or more, and all passenger ships regardless of size.
Navy vessels may turn off their AIS when they are on a mission. Otherwise, captains are advised to keep it on.
Ships on the right always have the right of way. Ships on the left must yield to allow them to cross their path.
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