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Echo-responsive apparatus

阅读：417发布：2021-09-13

专利汇可以提供Echo-responsive apparatus专利检索，专利查询，专利分析的服务。并且A ship-borne sonar system includes a two-dimensional array of electromechanical transducers mounted on, or near, the focal surface of a concave spherical reflector to transmit and receive acoustic pulses in respective directions throughout a sideways sector of surveillance from the ship. A gating unit couples only some of the transducers to respective transmission-reception channels, the particular combination of transducers selected being controlled by a steering unit to stabilize or otherwise steer the transmission-reception direction within the surveillance-sector. Each detected echo is displayed with a directionality dependent upon which of the channels detected that echo.，下面是Echo-responsive apparatus专利的具体信息内容。

权利要求

1. Sonar apparatus comprising: a concave spherical reflector having a spherical focal surface; a multiplicity of electromechanical transducers mounted close to one another around said focal surface for receiving via the reflector acoustic echoes from a multiplicity of closely spaced angular directions throughout a sector of surveillance, different ones of said transducers receiving echoes as aforesaid from different ones of said directions; a multiplicity of reception channels adapted to be coupled to said transducers for detecting echoes received thereby, there being fewer reception channels than transducers; selector means for coupling said reception channels to respective ones of a selected combination of said transducers to detect the echoes received thereby, the particular combination of transducers involved being variable selectively; and further means for providing a display-representation of echoes detected by said reception channels, said further means providing representation of direction of reception of each such echO in accordance with whichever of the reception channels detects that echo.

2. Sonar apparatus according to claim 1 wherein said further means is means for displaying detected echoes each in accordance with the direction and range from which that individual echo is received.

3. Sonar apparatus according to claim 1 wherein said further means comprises a display device and a switch for coupling the reception channels in turn to the display device to receive from the reception channels sequentially signals in accordance with echoes detected by the different reception channels.

4. Sonar apparatus according to claim 1 wherein said further means comprises a multiplicity of echo-indicating devices to indicate echoes detected by the different channels of said combination.

5. Sonar apparatus according to claim 1 for use on a craft and including an attitude-responsive device for controlling in accordance with craft-attitude the selection made by said selector means.

6. Sonar apparatus according to claim 1 including a multiplicity of separate transmission channels for supplying electric carrier-wave oscillations to the transducers, said selector means coupling the transmission channels to respective ones of the said combination of transducers to supply carrier-wave oscillations thereto individually, and each said transducer being responsive to the supply of said carrier-wave oscillations thereto to emit corresponding acoustic energy.

7. Sonar apparatus according to claim 6 wherein said carrier-wave oscillations are pulsed oscillations, each said transducer emitting pulses of acoustic energy alternately with the reception of echoes.

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