近日,美国《航宇日报》报道:如果说上世纪80年代美国退役中将格雷厄姆提出的“高边疆”理论,还仅仅是进行了理论探讨的话;那么,上个世纪90年代以来的海湾战争、科索沃战争、伊拉克战争,则已深刻表明:“高边疆”领域的安全威胁已越来越现实。太空已成为军事强国争夺的重要战场。据不完全统计,截至2005年4月份,在地球轨道运行的各种用途的人造卫星共有849颗,其中有425颗(占总数的50．6％)为美国所有,俄罗斯有99颗。而且,据国际 Recently, the U.S. Aerospace Journal reported: If the “high-frontier” theory put forward by Graham in the 1980s retired by the United States is still only a theoretical discussion, then the Gulf since the 90s of last century The war, the Kosovo war and the Iraq war have profoundly demonstrated that the security threat in the “high frontier” area has become increasingly realistic. Space has become an important battleground for military power. According to incomplete statistics, as of April 2005, a total of 849 satellites for various purposes in orbit around Earth are in operation, of which 425 (50.6% of the total) are owned by the United States and 99 in Russia. And, according to the international