专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06483453B2 Method for reducing transmit power for traffic alert and collision avoidance systems and airborne collision avoidance systems 有权
标题翻译：降低交通警报和防撞系统以及机载碰撞避免系统的发射功率的方法
公开(公告)号：US06483453B2
公开(公告)日：2002-11-19
申请号：US09943039
申请日：2001-08-29
申请人： David Oey , Ruy C. Brandao , LuAn Vanness , Larry D. King
发明人： David Oey , Ruy C. Brandao , LuAn Vanness , Larry D. King
IPC分类号： G01S1300
CPC分类号： G01S13/765 , G01S13/781 , G01S13/9303
摘要： The present invention provides a method for efficient use of the transmit power of a Traffic Alert Collision Avoidance System (TCAS) that allows enhanced surveillance range and limits radio frequency (RF) interference in crowded airspace. The method reduces power density in crowded airspace by modifying Mode S, Mode A and Mode C interrogations. During Mode S broadcasts, tracking interrogation power is reduced as a function of range. Further transmit power reduction is achieved by broadcasting a variable power density whisper-shout interrogation technique for Mode A/C aircraft when garbling is detected. If garbling is observed during a medium whisper-shout interrogation sequence, the method of the present invention attempts to clear the garbling by using focused high-density whisper-shout steps but only in the ranges where garbling was detected. Formation members can account for other formation members that are TCAS equipped using a special E-TCAS Broadcast Interrogation. The presence of other E-TCAS will be used in the RF interference limiting calculations. Aircraft flying in formation further minimize broadcast power by sharing information between the formation leader and formation aircraft.
摘要翻译：本发明提供了一种有效利用交通警报冲突避免系统（TCAS）的发射功率的方法，其允许增强的监视范围并限制拥挤的空域中的射频（RF）干扰。该方法通过修改模式S，模式A和模式C询问来降低拥挤空域的功率密度。在模式S广播期间，跟踪询问功率作为范围的函数减小。当检测到乱码时，通过广播用于模式A / C飞机的可变功率密度耳语询问技术来实现进一步的发射功率降低。如果在中等耳语询问序列期间观察到乱码，则本发明的方法尝试通过使用聚焦的高密度耳语步骤来清除乱码，但是仅在检测到乱码的范围内。组成员可以考虑使用特殊的E-TCAS广播讯问装备TCAS的其他组织成员。其他E-TCAS的存在将用于RF干扰限制计算。飞机飞行通过在地层导弹和地面飞机之间共享信息进一步最小化广播能力。

IPRDB

热门服务

关于我们

友情链接

联系方式