据CNN报道,2013年1月27日,日本用H2A火箭成功发射了两颗侦察卫星,分别是“雷达4号”和一颗光学试验卫星。“雷达4号”在黑夜和恶劣天气下也能拍摄分辨率在1米左右的图像,而光学试验卫星分辨率在0.4米左右。这个水准在现役侦察卫星中并不是最先进的,美国一些服役多年的“天眼”仍然“傲视群雄”。“天眼”能看清什么?“天眼”是指高分辨率侦察卫星,也叫间谍卫星。它们 According to CNN, on January 27, 2013, Japan successfully launched two reconnaissance satellites, the “Radar 4” and an optical test satellite, with the H2A rocket. “Radar 4 ” in the dark and bad weather can also capture images at a resolution of about 1 meter, and optical test satellite resolution of about 0.4 meters. This level is not the most advanced in active reconnaissance satellites. Some “U.S.SR” still serving many years in the United States still “stand out from the rest.” “Eye ” can see what? “Eye ” refers to the high-resolution reconnaissance satellite, also known as spy satellite. they