China "Kills" Satellite in low-earth Orbit - GPS Risk?

From CNN - Another reason is stay awake at night....

WASHINGTON (CNN) -- China last week successfully used a missile to
destroy an orbiting satellite, U.S. government officials told CNN on
Thursday, in a test that could undermine relations with the West and
pose a threat to satellites important to the U.S. military.

According to a spokesman for the National Security Council, the
ground-based, medium-range ballistic missile knocked an old Chinese
weather satellite from its orbit about 537 miles above Earth. The
missile carried a "kill vehicle" and destroyed the satellite by ramming
it.


The test took place on January 11. (Watch why the U.S. has protested
the missile strike )


Aviation Week and Space Technology first reported the test: "Details
emerging from space sources indicate that the Chinese Feng Yun 1C
(FY-1C) polar orbit weather satellite launched in 1999 was attacked by
an asat (anti-satellite) system launched from or near the Xichang Space
Center."


A U.S. official, who would not agree to be identified, said the event
was the first successful test of the missile after three failures.


The official said that U.S. "space tracking sensors" confirmed that the
satellite is no longer in orbit and that the collision produced
"hundreds of pieces of debris," that also are being tracked.


The United States logged a formal diplomatic protest.


"We are aware of it and we are concerned, and we made it known," said
White House spokesman Tony Snow.


Several U.S. allies, including Canada and Australia, also have
registered protests.


Under a space policy authorized by President Bush in August, the United
States asserts a right to "freedom of action in space" and says it will
"deter others from either impeding those rights or developing
capabilities intended to do so."


The policy includes the right to "deny, if necessary, adversaries the
use of space capabilities hostile to U.S. national interests."


Low Earth-orbit satellites have become indispensable for U.S. military
communications, GPS navigation for smart bombs and troops, and for
real-time surveillance. The Chinese test highlights the satellites'
vulnerability.


"If we, for instance, got into a conflict over Taiwan, one of the first
things they'd probably do would be to shoot down all of our lower
Earth-orbit spy satellites, putting out our eyes," said John Pike of
globalsecurity.org, a Web site that compiles information on worldwide
security issues.


"The thing that is surprising and disturbing is that [the Chinese] have
chosen this moment to demonstrate a military capability that can only
be aimed at the United States," he said.