North Korean space officials have said that all assembly and preparations for a planned satellite launch have been completed, while denying it is a cover for a missile test.
Space officials told reporters at a news conference in Pyongyang that the launch of the three-stage rocket is on schedule to happen sometime between April 12 and 16 as part of centennial birthday commemorations for late president Kim Il Sung, the country's founder.
"All the assembly and preparations of the satellite launch are done," said Ryu Kum Chol, deputy director of space exploration at the Department of Space Technology.
The United States and others say the Unha-3 rocket could also test long-range missile technology which might be used to strike the US and other targets. North Korea said it will launch an observation satellite meant to provide detailed surveys of the countryside.
Mr Ryu said the launch is meant as a peaceful development of North Korea's space exploration programme and any assertion that it is a cover for developing missile technology is "nonsense".
North Korean space officials previously showed foreign reporters all three stages of the rocket in position at a launch site in north-western North Korea.
The United States said the launch will jeopardise a US-North Korean agreement where Washington would provide Pyongyang with much-needed food aid in exchange for a freeze on nuclear activity, including a moratorium on long-range missile tests.
A similar 2009 rocket launch was condemned by the UN Security Council. North Korea walked away from nuclear disarmament negotiations in protest, and conducted an atomic test weeks later which led to tighter UN sanctions.
North Korea has tested two atomic devices, but is not believed to have mastered the technology needed to mount a warhead on a long-range missile.
Russia rebuked North Korea for planning the satellite launch in violation of UN resolutions. Russian state-owned news agency RIA Novosti quoted Foreign Ministry spokesman Alexander Lukashevich as saying that Russia views Pyongyang's plans as "an example of ignoring decisions of the UN Security Council".