Reliability questions
Many experts still cast doubt on whether or not the THAAD system can be effective to thwart North Korean missiles.
Last year, Michael Gilmore, director of the operational test and evaluation directorate at the US Defense Department, said in a report to Congress that the system still lacked the reliability needed for operation in the field.
“Analyses of date from the Reliability Confidence Test and multiple flight tests suggest that THAAD system components are not exhibiting consistent or steadily increasing reliability growth between test events,” Gilmore said, adding the US military had succeeded in only nine intercept experiments.
He added the missile shield showed weakness in adapting to different natural environments, such as temperature extremes, humidity, rain, ice, snow, sand, and dust.
Recent simulation experiments here also revealed certain weaknesses, according to Korea Aerospace University.
One simulation presumed a situation that North Korea was firing a mid-range Nodong missile with a nuclear warhead toward a US base in Pyongtaek, 35 kilometers south of Seoul, said professor Jang Young-geun, a military advisor to the defense ministry.
“The simulation showed THAAD failed to shoot down the incoming Nodong missile,” Jang noted. It took 203 seconds to detect, track and shoot the interceptor against the incoming missile, but it was too late to take down it, he said.
“THAAD’s effective altitude is 40 to 150 kilometers, but the Nodong missile is too fast to intercept within the estimated effective altitude,” the professor said, adding that the antimissile system could still defend against missiles flying toward the central or southern region.
Meanwhile, concerns over potential health problems from electromagnetic waves of the powerful radar are growing.
Defense officials contend the missile defense system will be located on a mountain, so it would be harmless so long as people stay at least 100 meters away from it.
But many residents in Seongju do not trust the military’s argument, citing a US Army THAAD operational manual that describes the zone of 3.6 kilometers as a personnel-controlled area.
“You can’t make a unilateral decision like this when about half of Seongju residents live within 2 kilometers of where THAAD is to be stationed,” said Bae Jae-man, a local council speaker, before making a visit to the defense ministry for protest.
Attending a National Assembly session, Defense Minister Han Min-koo rebuffed any safety concerns.
“The US military conducted two evaluations of potential effects on the environment and confirmed operational safety with data from simulations,” said the minister. “The conclusion from these evaluations is the THAAD deployment will pose no risk.”