- narrow beam radiogoniometer
- 无线电窄束定向计
Atmospheric Sciences (English-Chinese) dictionary. 2014.
Atmospheric Sciences (English-Chinese) dictionary. 2014.
Direction finding — (DF) refers to the establishment of the direction from which a received signal was transmitted. This can refer to radio or other forms of wireless communication. By combining the direction information from two or more suitably spaced receivers… … Wikipedia