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公开(公告)号:US6097338A
公开(公告)日:2000-08-01
申请号:US147609
申请日:1999-03-24
CPC分类号: G08G5/0026 , G01S1/18 , G08G5/025
摘要: A glide path transmitter for an instrument landing system. The transmitter includes several antenna radiators by way of which high frequency signals containing various low frequency modulated carrier and side band components are radiated. The components overlap each other in the far field where they form a guide signal which can be evaluated by aircraft. Phases of the carrier oscillations of the radiated high frequency signals form the guide signal having a set relationship with each other. A separate digitally controlled modulator is provided for each high frequency signal fed to an antenna radiator. The modulator modulates the phase and amplitude of a high frequency oscillation fed thereto according to a given model and inputs the modulated high frequency signal into the antenna radiator allocated thereto, thus reducing the supply network expenditure.
摘要翻译: PCT No.PCT / EP98 / 03661 Sec。 371 1999年3月24日第 102(e)1999年3月24日PCT PCT 1998年5月22日PCT公布。 公开号WO98 / 54546 日期1998年12月3日用于仪表着陆系统的滑翔道发射机。 发射机包括几个天线辐射器,通过这些天线辐射器辐射包含各种低频调制载波和边带分量的高频信号。 这些组件在远场中彼此重叠,在那里它们形成可由飞机评估的引导信号。 辐射高频信号的载波振荡的相位形成彼此具有一定关系的引导信号。 为馈送到天线辐射器的每个高频信号提供单独的数字控制调制器。 调制器根据给定的模型调制馈送到其的高频振荡的相位和幅度,并将调制的高频信号输入到分配给它的天线辐射器,从而减少供电网络的支出。