| 摘要 |
A threat sector indicating warner having a separate alarm channel (1) for each threat sector. The alarm channel (1) comprises in series an integrator (9) and a comparator (10). An antenna covering a threat sector is connected to the input of the alarm channel via an intermediate amplifier and threat sector indicating means (11) is connected to the output of the alarm channel. In particular the warner is suitable for use for indicating threat from equipment working with a relatively high pulse frequency of the light. <IMAGE> |
