In 2007, China shot down a 4.6-foot cube satellite at an intercept altitude of 864km. The intercept speed was 32,400 km/hr. In 2008, the United States prepositioned its ships right underneath the flight path of a decaying satellite re-entry. The satellite was the size of a bus and the intercept altitude was 247km. The intercept speed was 28,000 km/hr. Who do you think has superior anti-satellite technology? China's target was almost 10 times smaller than the US target (e.g. 4.6 feet vs. 30 feet). China's interceptor struck at an altitude 3 1/2 times higher than the US intercept (e.g. 864km vs. 247km). China's interceptor was traveling 4,400 km/hr faster than the US interceptor (e.g. 32,400 km/hr vs. 28,000 km/hr). An objective comparison shows China's ASAT interceptor exceeds the US SM-3 in all three categories. ---------- References. Air & Space Power Journal | Fall 2009 China Tests Anti-Satellite Weapon, Unnerving U.S. | The New York Times FACTBOX: High-tech system to try to intercept satellite | Reuters ---------- "Published on Jan 28, 2013 China's GMD Test"