普林斯顿(Princeton)大学的B.·米尔斯教授发展了一种采用合作目标的空中防撞报警系统设计原理,系统所用激光器功率很低,并作了有限的地面试验。系统设计原理表明,最好的出路是可用于减少两架较小的通用航机在空中发生碰撞的危险,因为联邦航空管理局推荐的基地主动信标防撞系统不能为这些飞机提供这种保护(见AW＆ST,Mar.31,P.85)。米尔斯是该大学的机械和宇航工程系教 Professor B. Mills at Princeton University has developed a design principle for airborne collision avoidance alarm systems using a collaborative target that uses very low power lasers and has done limited ground testing. The principle of system design shows that the best way out is to reduce the risk of two smaller general aircraft colliding in the air because the FAA-recommended base active beacon collision avoidance system can not provide such protection for these aircraft (See AW & ST, Mar. 31, p. 85). Mills is a professor of mechanical and aerospace engineering at the university