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。
The thesis first introduces the spares supplying flow process for a airlines from the spares supplying for airplane development course the characteristic for spares supplying to the actuality of the spares supplying . the disadvantages of the basic processes prevailing a airlines are studied . then the author expounds the course and the method of bpr by using the knowledge about bpr to reengineered a airlines spares supplying flow proces 本论文首先从a公司的航空器材供应的发展历程、航材供应的特点、航材供应的现状等方面对a公司的航材供应流程进行了详细的阐述，分析了现有流程存在的问题，然后运用业务流程再造的相关理论通过以下几步对a公司航材供应的业务流程进行再造：首先，分析a公司航材供应业务流程现状，确定a公司航材供应业务流程再造的目标、计划和组织保证。
