For recent ten years , with the rapid development of economy in our country , there is a significant growth of air traffic . the original air traffic control system cannot satisfy the increasing traffic day by day 近十年来，随着我国经济的高速增长，空中交通量显著增加，原有的空中交通管制系统已经不能满足日益增长的交通量需求。
For recent ten years , with the rapid development of economy in our country , there is a significant growth of air traffic flow . the original air traffic control system cannot satisfy the increasing traffic day by day 近十年来，随着我国经济的高速增长，空中交通流量显著增加，原有的空中交通管制系统已经不能满足日益增长的交通量需求。
He urged governments to deregulate the industry in order to open access to global capital markets , as well as to cut the tax burden and regulate monopoly suppliers led by airports and air traffic control systems 他敦促各国政府解除对该行业的监管，使之可以进入全球资本市场，同时降低税负，对以机场和空中交通管制系统为首的垄断供应商进行监管。
All atc systems continue to function properly with equipment availability well exceeding our performance pledge of 99 . 9 per cent . with further experience gained in operating the systems , orders for the enhancement of six critical systems have been placed 民航处所有的航空交通管制系统均一直运作妥善，仪器系统提供服务的比率更高出服务承诺所订的99 . 9 % 。
With the fast increasing of air traffic , the safety problems are outstanding . so a large quantity of atc systems with high functionality and reliability are imminently required 随着我国航空运输业的飞速发展，航路流量不断增大，空中交通安全问题已十分突出，实现空管系统的自动化是必然要求，因此这就需要增加大量功能完备、性能先进、可靠性高的空中交通管制系统。
One of the reasons is to allocate additional provision for procuring specialised stores and spare parts for the maintenance of the air traffic control system and the acquisition of aeronautical communication services for enhancement of flight safety 1 % ) 。原因之一是需要额外拨款以采购保养航空交通管制系统的特别用途物料和零件，以及增添航空通讯服务以加强飞行安全。
Although we have begun to develop the air traffic control system in china since 1970 ' s , so many equipment from abroad are still used up till now . at the cost of high expenditure , it is of great necessity to have the equipment of air traffic control of our own 良好的空中交通管制系统是航空运输业安全的保障，从七十年代起，我国便开始研制自己的空中交通管制系统，但是，目前很多民航机场仍在使用国外进口空管系统，这无疑增加了开支。
Radar data processing ( rdp ) is critical technology in air traffic control ( atc ) system . rdp receive observation from sensor and processing radar data to tracking target . rdp provide position , velocity , characters and maneuver of target 雷达数据处理是空中交通管制系统中的关键技术，它接收雷达传感器获取的数据并进行相应的处理，形成表示目标运动轨迹的航迹，提供目标的位置，速度，机动情况和属性识别，对目标进行跟踪和监视。
