| 摘要 |
<p>PURPOSE: To provide a radar device having the capability of giving a high resolution by using a relatively small antenna for reducing beam width equivalently. CONSTITUTION: Regarding a radar to be installed on a moon-orbital observation satellite 1 or the like, a phased array antenna 4 is used as an antenna for transmission and receiving in common, and a feeding phase for each antenna element is adjusted for maintaining a difference in each beam axis between a transmission beam 6 at the time of transmission and a receiving beam 7 at the time of receiving, so as to superpose only a part of a transmission beam pattern and a receiving beam pattern on an observation object zone. Constitution is thereby made, so as to form a composite transmission and receiving beam 15 having equivalently narrow breadth.</p> |
