| 摘要 |
PURPOSE:To improve the efficiency of search and increase the volume of information per time by feeding back negatively irregular components due to the turning of a wave transmitter/receiver to keep the turning speed of the wave transmitter/receiver at a fixed speed. CONSTITUTION:A wave transmitter/receiver 1 has three vibrators 2a-2c in the horizontal direction and turned by a motor mechanically coupled with the unit 1. A rotational angle detecting circuit 4 is mechanically interlocked with the unit 1 and generates voltage proportional to the turning angle of the unit 1. The output voltage is transferred to a transmitting trigger generating circuit 5, which sends a trigger pulse in each prescribed voltage of the voltage signal. If the unit 1 is turned by an angle theta for example after transmitting signals, the received wave direction is turned reversely by the angle theta to control the directivity. |
