[综合报道]1976年4月30日,美国从范登堡空军基地,用“宇宙神”火箭,发射了第一颗海洋监视卫星——“白云”。这是一颗母子卫星,母星携带有三颗子卫星,在轨道上组成一个“星座”。这颗设计样星,是为提供有关苏联和其他国家海上舰只所在位置情报而设计的。该卫星已进入近地点1,265公里,远地点1,289公里,倾角63.5度, [Comprehensive Report] On April 30, 1976, the United States launched the first marine surveillance satellite, Baiyun, from Vandenberg Air Force Base with the Cosmic God rocket. This is a mother and son satellites, the mother star carrying three satellites, orbit in a "constellation . The design star, designed to provide intelligence about the location of ships in the Soviet Union and other countries. The satellite has entered the perigee 1,265 km, apogee 1,289 km, angle 63.5 degrees,