We've come to believe that GPS is great, but we need to change our habits." The accuracy of system features seems to be replaced by vagueness and confusion.But what would a viable alternative look like? Overall, GPS is still a very powerful system.Its main weakness is the weakness of the signal itself.One solution is to use satellites closer to us to rebuild the system with a stronger signal.But the change will require more satellites to provide global coverage: 700 satellites, compared with the current benchmark of 24.For all we know, we may be witnessing the first stage of the death of GPS.For many years, GPS has been the world's only integrated global satellite navigation system.Its only real competitor is Russia's Glonass, which ranks far behind.Today, China has implemented the Beidou satellite System, and the European Union is developing another system, Galileo.However, these systems operate in a similar way to GPS and have the same vulnerabilities.
Unlike the noisy surface of a planet, which is rich in radio signals, the upper atmosphere is a calm region where the frequency of interference is interrupted; Humphreys can immediately detect data interference from the Black Sea.Where did the ghost signal come from? Humphreys knew that the spoofed signal would have a Doppler effect when the station passed overhead.It's a simple clue familiar to most city dwellers: Imagine driving to a crime scene.You can hear sirens and loudspeakers, but you can't see them.Because of the sudden increase in the height of these ambient noises, you can tell when you are approaching.Again, Humphreys can use changes in the deception signal to start guessing where he's coming from.
When crunching the numbers, he offered two possible locations: a forest in Romania and somewhere in Syria.He used data from another station to recalculate, this time concluding that the signal came from either the German campaign or Syria.After Hephrys verified the exact location, the two sets of Syrian coordinates were the same: Hemeimeem airbase, a coastal location linked to Russian military activity in the country.Further calculations reduced the GPS jammer to the transmitter in the northwest quadrant of the base station.Another recording from the space station, this time concluding that the signal was coming from the German countryside or Syria.After Hephrys verified the exact location, the two sets of Syrian coordinates were the same: Hemeimeem airbase, a coastal location linked to Russian military activity in the country.
Further calculation reduces the interference source of the transmitter in the northwest quadrant of the base station.Another recording from the space station, this time concluding that the signal was coming from the German countryside or Syria.After Hephrys verified the exact location, the two sets of Syrian coordinates were the same: Hemeimeem airbase, a coastal location linked to Russian military activity in the country.Global positioning system.GPS jammers could become a way for America's enemies to fight in conflicts they normally cannot win.The civilian use of GPS has long surpassed the military, but GPS is still part of nearly every US.weapons system."That's what we mean when we face a serious adversary in electronic warfare," Humphries said.
I don't think Russia has shown all its cards yet. In July last year, the captain of a US-registered container ship was entering the port of Shanghai when he noticed something was wrong with his navigation system.GPS located the ship several kilometers inland.When Humphreys and C4ADS heard about it, they suspected it was an isolated incident."We looked at more data and, frankly, we saw the same phenomenon off the coast of China," Humphries said.On the same day, another 300 ships in Shanghai were targeted for identity theft.Thousands of ships have been targeted for identity theft.What was unusual about the Shanghai occupation was that the ship had not been "transported" to the same wrong location, and all the reported coordinates were different.
