Now with the emergence of improved air - ground data communication technologies such as aircraft communication addressing and reporting system acars , automatic dependent surveillance and secondary surveillance radar mode s , the opportunity is there for aircraft reporting by fully automatic means 由于空中对地面的通讯技术的革新，例如飞机通讯通话及报告系统acars自动从属监视系统ads及二次监察雷达ssr s模式的出现，均能促进飞机自动化提供天气报告。
Psr is a radio detection equipment that provides information on range and bearing of aircraft in the form of a target blip on the radar screen to air traffic controllers by transmitting radar pulses and detecting the reflected signals from the aircraft . no active transponder or avionics on board aircraft has to be relied on 监察雷达发出雷达脉冲，侦测从飞机反射回来的信号，便可计算飞机的距离及方位，并以目标点在雷达屏向航空交通管制员显示，而不须依靠航机上的应答机或其他航空器材。
Now with the emergence of improved air - ground data communication technologies such as aircraft communication addressing and reporting system ( acars ) , automatic dependent surveillance ( ads ) and secondary surveillance radar ( ssr ) mode s , the opportunity is there for aircraft reporting by fully automatic means 由于空中对地面的通讯技术的革新，例如飞机通讯通话及报告系统( acars ) 、自动从属监视系统( ads )及二次监察雷达( ssr ) s模式的出现，均能促进飞机自动化提供天气报告。
