1509333 Sonars RAYTHEON CO 27 Jan 1976 [3 Feb 1975] 03032/76 Heading G1G A sonar for a ship has a transducer system 24 in which the receiving beam sensitivity direction relative to a symmetry axis 2 may be controlled. The beam direction may be space stabilized by making the beam control responsive to the ship's gyro. As claimed, a directional receiving or radiating system having a beam direction specified by bearing # and tilt angle relative to an axis Z of the system comprises a plurality of rings (Nos. 1-8) of transducers 38 disposed in a corresponding plurality of parallel planes spaced along and perpendicular to the axis, variable delay devices (73), Fig. 8 (not shown), in channels individual to the transducers, and control means (58), Figs. 12 and 14 (not shown), responsive to selected tilt and bearing # angles as to control the variable delay devices as to establish the beam direction, wherein the control means includes a store of sets of delay values, each set determining relative delays for transducers for an associated tilt angle, regardless of bearing angle, and selector means responsive to the selected bearing angle to associate the set of delays selected in accordance with the selected tilt angle with those transducers which provide a beam direction with the selected bearing angle. In the preferred embodiment, sets of twelve circumferentially sequential transducers from each ring, aligned parallel to the Z axis, are used to form the beam in reception. In transmission all the transducers are utilized, only the tilt being controlled. Synchronization of transmission reference signals and reception allows gating to examine signals received from a specified range, azimuth and elevation and also allows the use of correlation techniques for the reception of echo ranging signals. The system may be used for passive listening. The transducer array may be disposed on a truncated hemisphere, Fig. 5 (not shown). The system may be alternatively an electromagnetic radiation system.
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机译：1509333 Sonars RAYTHEON CO 1976年1月27日[1975年2月3日] 03032/76标题G1G船上的声纳具有换能器系统24，在其中可以控制相对于对称轴2的接收光束灵敏度方向。通过使光束控制响应于船上的陀螺仪，可以使光束方向在空间上稳定。如所要求保护的，具有由轴承＃和相对于系统的轴线Z的倾斜角指定的光束方向的定向接收或辐射系统包括布置在相应的多个平行的换能器38的多个环（1-8号）。沿着和垂直于轴间隔的平面，图8中的可变延迟装置（73）（未示出），在换能器各自的通道中以及控制装置（58），图8和9。参照图12和14（未示出），响应于选择的倾斜角和方位角来控制可变延迟装置以建立波束方向，其中控制装置包括一组延迟值的存储，每组延迟值确定换能器的相对延迟对于与倾斜角无关的方位角，与方位角无关，选择器装置响应于所选方位角，将根据所选倾斜角选择的一组延迟与那些将光束方向与所选方位角提供给传感器的换能器相关联。在优选实施例中，来自每个环的十二个周向顺序的换能器组平行于Z轴排列，用于形成接收光束。在传输中，所有换能器都被利用，仅倾斜被控制。传输参考信号和接收的同步允许选通检查从指定范围，方位角和仰角接收的信号，并且还允许使用相关技术来接收回波测距信号。该系统可以用于被动收听。换能器阵列可以被布置在图5的截半球上（未示出）。该系统可以替代地是电磁辐射系统。
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