How does Russia use jammers to block American signals

The jammer is one of the best tools to block the signal. With the development of science and technology, the jammer has developed into a military weapon and is widely used in the battlefield. Washington-According to four U.S. officials, the Russian military has interfered with several U.S. military drones in the air in Syria, seriously affecting U.S. military operations. Authorities say that after a series of alleged chemical weapons attacks against civilians in eastern Ghouta, which is controlled by the rebels, the authorities said that the Russians began to interfere with several smaller US drones a few weeks ago. Officials say the Russian military is worried that the US military will respond to the attack and begin to interfere with the GPS systems of drones operating in the area.

R-Neb. Senator Ben Sasse responded to the Russian news on Tuesday and said, “Russia wants to turn to destroy our interests.” Todd Han, director of the Radio Navigation Laboratory at the University of Texas at Austin Dr. Todd Humphreys said that scrambling is very simple, which involves preventing or interfering with the drone receiving signals from GPS satellites.
“The GPS receiver on most drones is easily blocked by jammers,” he said.

Humphreys, a GPS tampering and portable jammer expert, warned that this could have a major impact on U.S. drones, causing them to malfunction or even crash. He said that if the drone reports the wrong location or is missing, “at least it may cause confusion for ground operators.” According to Humphreys, four years ago, after the Crimean invasion, US analysts first captured Russian military drones in eastern Ukraine. He said the jammer was initially detected as a weak signal from space and bounced off the surface of the earth. The jammer “has a fairly significant impact” on the United Nations reconnaissance aircraft trying to monitor the area, fixing the team for several days, and stopping collecting data from the air.

The Ministry of National Defense will use operational safety as the basis, not to mention whether the interference has caused the implantation of drones. Pentagon spokesman Eric Pahun said: “The US military has taken adequate countermeasures and protective measures to ensure the safety of our manned and unmanned aircraft, our troops and the tasks they support.” An official confirmed that this strategy has operational impact on US military operations in Syria.

Officials said that the equipment used was developed by the Russian military and is very complex, even for certain encrypted signals and anti-jamming receivers. The drones affected so far are smaller reconnaissance aircraft, rather than large predators and reapers, the latter usually fighting in a combat environment and can be armed. Dr. Humphreys said that although the attack took place in cyberspace, the consequences are still serious. He said: “Compared to the dynamic ball, they are less hostile, but sometimes the effect may be equally harmful.” “It’s like shooting with radio waves instead of bullets.”