GPS interference also affects other systems
In addition to the human problem, the other systems are poorly constructed. To the amazement of the entire ship's crew, in a test carried out by British consultant and former member of the Royal Institute of Navigation, David Last, he found that a GPS jammer was also causing the radar and gyro to fail because both GPS systems were increasing. precision.
In addition to this, satellite communication also failed as its directional antenna also relied on GPS. This is a terribly bad design in all three cases, because in the event of a GPS fault, the devices could automatically revert to a function that was not corrected by GPS. The designers apparently never thought that GPS frequencies could ever be jammed.
This careless assumption of course runs through much of everyday technology. Much of it actually only uses the exact time of satellite atomic clocks, for example financial transactions for their timestamps. Today, many of these systems are terribly vulnerable to the simplest malfunctions. This could be solved by a ground antenna system that works like GPS, but transmits longer waves with higher signal strength. However, it is more likely that we will wait and hope that nothing will happen.
There must be a real threat to act, as the associated EMP (electromagnetic pulse) example shows. It is possible with relatively simple means to generate a strong pulse that destroys the microscopic structures of our ubiquitous semiconductors.
Such a device can be built from an old microwave, for example. Hobbyists are currently using pulse generators, which they construct from the flash coils of small cameras, to destroy the RFID chip in the new electronic ID card. However, it remains valid as a state document. Our civilian infrastructure is largely unsecured against EMP. On the other hand, knowledge on this subject is widespread.
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