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| 全自动无线电罗盘; 无线电罗盘 (通过发射电磁信号来确定方向的设备，可以用在飞机上也可以用在地面设备上。自动测向仪的工作频率为低频或中频，主要部分包括一个环行天线，并给出发射机的零位。使用测向天线可以解决180°模糊问题。最常用的自动测向仪利用了称为 NDB (全向信标)的地面发射站) | |||
| 自动测向仪［器］ | |||
| 自动测向仪 | |||
| 自动无线电测向器 | |||
| 自动测向器; 自动定向仪; 无线电罗盘 | |||
| 自动探向器 | |||
| English thesaurus | |||
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| An aircraft radio navigation system that senses and indicates the direction to a LF/MF non-directional beacon NDB ground transmitter. Direction is indicated to the pilot as a magnetic bearing or as a relative bearing to the longitudinal axis of the aircraft depending on the type of indicator installed in the aircraft. In certain applications, such as military, ADF operations may be based on airborne and ground transmitters in the VHF/UHF spectrum. | |||
| automatic direction finder: 19 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 4 |
| Earth sciences | 1 |
| Electronics | 1 |
| Mechanics | 1 |
| Radio | 1 |
| Shipbuilding | 1 |
| Space | 3 |
| Technology | 6 |