公开(公告)号：US3836978A

公开(公告)日：1974-09-17

申请号：US40846073

申请日：1973-10-23

Applicant: INT STANDARD ELECTRIC CORP

Inventor： OVERBURY F

IPC: G01S1/38 ,  G01S1/40 ,  H01Q3/24 ,  G01S1/44

CPC classification number: G01S1/40

Abstract: A commutated antenna array for a Doppler type radio navigation beacon system in which there are reference and main arrays. A limited number of additional elements are added to the main array on a semi-random basis and an adjustment in the commutated reference cycle is made in accordance with main array element spacing. Multi-path problems resulting from use of wide antenna spacing in the main array of a commutated reference Doppler Beacon are reduced.

Abstract translation: 用于多普勒型无线电导航信标系统的换向天线阵列，其中有参考和主阵列。 有限数量的附加元素以半随机方式添加到主阵列中，并且根据主阵列元素间隔进行换向参考周期的调整。 在整流参考多普勒信标的主阵列中使用宽天线间距导致的多径问题减少了。

公开(公告)号：US3728729A

公开(公告)日：1973-04-17

申请号：US3728729D

申请日：1971-12-22

Applicant: INT STANDARD ELECTRIC CORP

Inventor： OVERBURY F

IPC: G01S1/40 ,  G01S1/16

CPC classification number: G01S1/40

Abstract: A radio navigation beacon system of the Doppler type having a simplified antenna arrangement. A main array employing 30 array elements spaced at four wavelengths and an auxiliary or reference array comprising 12 reference antenna elements spaced at onethird wavelength, are employed. A source of radio frequency energy is commutated to the separate radiator elements in order to simulate unidirectional or bidirectional constant velocity motion of the source. Navigational information is derived from this ground beacon arrangement by a receiving station as, for example, in an approaching aircraft on the basis that the Doppler shift of frequency observed at the receiving station is proportional to the cosine of the angle of reception with respect to the operating centerline of the system. Means are included for commutating the reference frequency to each reference antenna element, in turn, during the period that each main array element is radiating.

Abstract translation: 具有简化天线布置的多普勒类型的无线电导航信标系统。 使用以四个波长间隔开的30个阵列元件的主阵列和包括以三分之一波长隔开的12个参考天线元件的辅助或参考阵列。 射频能量源被换向到单独的散热器元件，以便模拟源的单向或双向恒定速度运动。 基于接收站观测到的频率的多普勒频移与接收角相对于接收台的接收角的余弦成正比，由导航信息由接收站从例如接近飞行器的这个地面信标布置导出 系统的操作中心线。 包括用于在每个主阵列元件辐射的时段内将参考频率换向每个参考天线元件的装置。