| 摘要 |
PURPOSE:To improve target detection ability by providing a transmitter receiver for detecting the depth of the sea bottom under the body of a torpedo and knowing the depth of the sea bottom. CONSTITUTION:Sea bottom detection logic 22 sends out a trigger 19 for transmission based on the control signal 32 of homing logic 25 and a transmitting and receiving circuit 16 outputs a transmitted signal 17 at intervals determined by the trigger 19 to drive the transmitter receiver 15 for sea bottom position detection, thereby sending out an ultrasonic wave. The ultrasonic wave reflected by the sea bottom is received 15, amplified and waveform-shaped by the circuit 16 as a received signal 18, and outputted as a sea bottom detection echo gate 20. The logic 22 calculates the distance from a torpedo to the sea bottom from the echo gate 20 and applies as a sea bottom position signal 26 to homing logic 25, directivity composition logic 24, and torpedo sailing control 23. The logic parts 24 and 25 are coupled by a control signal 33 and the logic 25 and control part 23 are coupled by a control signal 34; and the logic 25 determines the optimum sailing depth of the torpedo based on a signal 26, instructs it to the control 23, and also sends a command for acoustic beam composition which makes the depth area of the target most efficient to the logic 24.
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