日本已经从美国购买了4架B767型机载预警和控制系统(AWACS)飞机,1998年3月交付了2架,今年还要交付另外2架。根据0.587亿美元合同,波音公司防御和空间部还要增加以下新设备:4副抗干扰全球定位系统(GPS)天线,4部GPS时间-日期接口设备,改进型敌我识别器(IFF)路由板,16部抗干扰的Have Quick无线电台等设备。上述设备的交付工作要 Japan has already purchased four B767 AWACS aircraft from the United States, delivered two in March 1998 and another two this year. Under the $ 587 million contract, the Boeing Division of Defense and Space added the following new equipment: 4 anti-jam GPS antennas, 4 GPS time-date interface devices, an improved IFF routing board , 16 anti-jamming Have Quick radio and other equipment. The above equipment delivery work to be