| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problems, wherein a guidance system for observing a target by using a Doppler radar has the possibility of misdetection of a main lobe clutter signal in a region wherein the Doppler frequency of a target signal overlaps with the Doppler frequency of a main lobe clutter, and performs waiting processing wherein the target signal goes out of the main lobe clutter frequency range, but cannot detect the target signal, so long as a flying body, loaded with the target or the guidance system, is moved to the outside of beam region, during the waiting processing. <P>SOLUTION: The main lobe clutter power is calculated by using an antenna pattern of the guidance system and a clutter measured value, and is compared with the power of the target signal calculated separately, and the angle range of the main lobe clutter wherein target detection is truly difficult is calculated. Accordingly, the main lobe clutter frequency range is narrowed, corresponding to the rise in the target signal power caused by target approach and the actual clutter state. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
