TAG: North Korea

South Korea to build eLoran system after jamming incident

May 3, 2016By
SouthKorea-Seoul

South Korea will award a contract this month to secure technology required to build an eLoran system as an alternative to GPS, reports the Australian Broadcasting Company (ABC). The announcement follows South Korea pointing the finger at North Korea for jamming its GPS signal reception in late March. The South Korean eLoran plan envisions setting up coastal transmitters by the end... read more

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State Department issues notice on North Korean jamming

April 8, 2016By

On April 7, the U.S. Department of State issued a notice about the recent jamming experienced in South Korea. Korean Peninsula GPS Jamming Notice A continuing series of incidents have been reported in the general location of Incheon, Republic of Korea and the surrounding Gyeonggi and Gangwon provinces out to approximately 100 nautical miles beginning on or about 0000Z31March16. The... read more

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South Korea issues warning over suspected North Korean GPS disruption

March 31, 2016By
SouthKorea-Seoul

South Korea issued a warning Thursday after detecting satellite signal disruptions that appeared to be coming from North Korea, according to the Korea Herald. The capital city of Seoul appeared to be the target. Officials said North Korea discharged a large amount of radio waves to jam GPS signals in the region. “We’ve detected signs that North Korea has been... read more

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North Korea Developing Precision-Guided Bomb

September 25, 2014By

North Korea is developing a GLONASS precision-guided bomb similar to the GPS-guided joint direct attack munitions (JDAMs) of the United States, reports South Korean newspaper The Chosun Ilbo (Korea Daily).  “We expect that the North will finish development of a new precision-guided bomb in the near future because we’ve detected signs that the North has been conducting tests for a few... read more

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Researchers See Ionospheric Signature of North Korean Nuclear Test

February 15, 2013By

The explosion of an underground nuclear device by North Korea this week disturbed the Earth’s ionosphere. The blast generated infrasonic waves that propagated all the way to the upper atmosphere causing small variations in the density of electrons there. By analyzing the signals from GPS satellites collected at ground-based monitoring stations in South Korea and Japan, scientists at the California Institute of... read more

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Massive GPS Jamming Attack by North Korea

May 8, 2012By

Large coordinated cyber attacks from North Korea near its border with South Korea produced electronic jamming signals that affected GPS navigation for passenger aircraft, ships, and in-car navigation for roughly a week in late April and early May. To date, no accidents, casualties, or fatalities have been attributed to jammed navigation signals aboard 337 commercial flights in and out of South... read more

North Korea Jamming Incident; LightSquared Issue

September 14, 2011By

My mailbox is currently overflowing with comments and questions concerning rampant rumors that in the March 2011 time frame a U.S. military reconnaissance aircraft was forced to land during an annual major east Asian military exercise, known as Key Resolve, due to GPS jamming. The jamming reportedly took place along the northern portion of the 684-mile long Korean peninsula, with the jamming supposedly originating with the North Koreans. The jamming scenario should come as no surprise, but it is the emergency or forced landing due to loss of a GPS signal among other supposed “facts” with which I take issue. read more

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Detecting Nuclear Testing: Software Under Development by OSU Could Pinpoint Treaty Violations

August 1, 2011By
Fig2_W

Can GPS be used to detect underground nuclear explosions? A research team is developing a software program that uses GPS to analyze the ionospheric effect of nuclear explosions. Results would show when and where a country has conducted a secret underground nuclear test. read more