BEIJING Men's Asics Onitsuka Tiger Corsair Vin Heritage Blue Black Australia , July 28 (Xinhua) -- China is developing a new generation of atomic clock, which it aims to use on the Beidou Navigation Satellite System Asics Onitsuka Tiger Mexico Delegation Black Australia , according to China Aerospace Science and Technology Corporation (CASTC) Friday.
The microwave mercury ion clock is currently one of the most accurate tools for measuring time by tracking atomic movement in the microwave range, said Wang Nuanrang Asics Onitsuka Tiger Mexico Mid Runner Black White Australia , project leader at the CASTC.
It can provide extremely precise measurements of time that can be used in the fields of deep space exploration and satellite navigation.
Wang said that scientists will establish an experimental mercury ion clock system to conduct scientific tests within the next four years, promoting the development of the Beidou system.
Since 2012 Asics Onitsuka Tiger Mexico Mid Runner White Australia , China's self-developed Beidou system has provided navigation, time and text messaging services in the Asia Pacific region.
By 2020 asics gel kinsei 6 australia , Beidou satellites will form a complete global satellite navigation system, according to China Satellite Navigation System Committee.
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SEOUL， April 18 (Xinhua) -- South Korean President Park Geun-hye said on Monday that signs have been detected that the Democratic People's Republic of Korea (DPRK) is preparing for another nuclear test as activity increased in the country's main nuclear test site.
"Recently， (the DPRK's) preparations for the fifth nuclear test are being detected，" Park told a meeting with senior presidential secretaries.
Park said the DPRK could conduct any abrupt provocations to escape isolation and solidify domestic loyalty following the international community's additional sanctions on Pyongyang.
The UN Security Council approved tougher-than-ever sanctions on the DPRK in early March over Pyongyang's fourth nuclear test and long-range rocket launch.
The DPRK detonated what it claimed was its first hydrogen bomb on Jan. 6， followed by the launch of a long-range rocket， which was condemned as a disguised test of ballistic missile technology， on Feb. 7.
From early March， Pyongyang raised tensions on the Korean peninsula by firing short-range and medium-range missiles and artillery shells in a show of force against annual U.S.-South Korea war games， which the DPRK considers as a dress rehearsal for northward invasion.
The Key Resolve command post exercise， which kicked off on March 7， ended about 10 days later， but the Foal Eagle field training exercise is scheduled to last later this month.
Park instructed the military to maintain strong defense readiness to sternly retaliate against any DPRK provocations at any time， calling for support from opposition parties in issues relevant to national security.
South Korea's defense ministry also warned of another DPRK nuclear test， saying there is possibility for an underground nuclear test.
Yonhap news agency cited South Korean and the U.S. intelligence authorities saying that the moves of vehicles and personnel recently increased two to three times more than last month at the Punggye-ri nuclear test site in the DPRK's northeast region where the country carried out all of its four nuclear bomb tests.
Concerns mounted about another nuclear detonation since top DPRK leader Kim Jong Un gave orders on March 15 to test a nuclear warhead and ballistic rockets capable of carrying the warhead.
South Korea's defense ministry spokesman Moon Sang-Kyun told a press briefing that the military has focused on Kim's order， saying the DPRK has been in a state of conducting its fifth nuclear test at any time.
Seoul had predicted two scenarios in the DPRK's fifth nuclear test. One is to detonate a nuclear warhead at its underground test site， and the other is to test the detonator of a warhead， from which nuclear materials are eliminated， according to South Korean Defense Minister Han Min-Koo's recent remarks.
If the DPRK conducts its fifth nuclear test in the near future， it would be unusually short in a time gap between tests compared with previous cases. Pyongyang tested nuclear bombs in October 2006， May 2009， February 2013 and January 2016 respectively.
Some of South Korean experts predicted the DPRK's fifth nuclear test to happen possibly before the historic ruling Workers' Party of Korea (WPK) congress scheduled in early May.
Meanwhile， the DPRK launched a Musudan ballistic missile for the first time on Friday. The missile， which was fired from a mobile launcher， was known to have failed as it exploded in mid-air several seconds after liftoff.
The Musudan missile is capable of carrying a nuclear warhead and reaching parts of the U.S. territory such as Guam and the outer reaches of Alaska.
Pyongyang has claimed that it possessed a miniaturized nuclear warhead and mastered the technology of a re-entry vehicle， key to developing an intercontinental ballistic missile (ICBM).
Related:
U.S.， South Korea， Japan to deepen cooperation on DPRK nuclear issue
Source: Xinhua | 2016-04-01 06:23:06 | Editor: huaxia WASHINGTON， March 31 (Xinhua) -- U.S. President Barack Obama on Thursday vowed to deepen cooperation with South Korea and Japan to deter the nuclear threat from the Democratic People's Republic of Korea (DPRK).
The three countries also called on the international community to "vigilantly enforce" new UN sanctions on Pyongyang.？ Full story
DPRK warn.