Radar Interrogator Apparatus.

摘要

The invention regards a perfectioning in reply radar systems, in particular SSR (Secondary Surveillance Radar) or IFF identification Friend or Foe). The purpose of this invention is to reduce undesired replies due to reflections from fixed obstacles or from structural peculiarities in the main radar system (i.e. radome) and other similar effects. The suppression of undesired replies is attained by varying azimuthally the emission power of the radio-frequence impulses according to a memorized law.