Differential amplitude angle guidance
专利汇可以提供Differential amplitude angle guidance专利检索，专利查询，专利分析的服务。并且An instrument landing system is operable with a scanning beam antenna system for providing glideslope and runway centerline indications to an aircraft. An azimuth antenna rotates in a plane parallel to the earth''s surface. An elevation antenna rotates in a plane normal to the earth''s surface. A first pair of AM modulated tones represents the instantaneous position of the azimuth antenna and a second pair of AM modulated tones represents the instantaneous position of the elevation antenna. A first carrier signal is modulated with the first pair of tones and a second carrier signal is modulated with the second pair of tones. The first and second carrier signals are received in the aircraft and when the first and second carrier signals illuminate the position in space occupied by the aircraft, the two pairs of tones are detected and their relative amplitudes are compared, wherein equal amplitudes indicate proper glideslope and/or centerline of runway.，下面是Differential amplitude angle guidance专利的具体信息内容。
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