| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radar device capable of displaying a ship track. <P>SOLUTION: A coordinate transformation-timing signal (S0) providing timing that converts a polar coordinate system to a rectangular coordinate system is input into the shifting circuit 72a of a target data detecting section 7, and a signal (S1) delayed by one cycle of a coordinate transformation clock of this signal (S0) is output. When the delayed signal (S1) is output from a selector 73, the coordinate transformation-timing signal (S0) is input into an AND gate 74 while the delay signal (S1) is reversed to be input thereinto. The AND gate 74 generates one-cycle data of the coordinate transformation clock based on these, outputting the data to a track data generating section 10 through an OR circuit 75. This data expresses the center of the polar coordinate system, i.e., a ship position, and then the ship data expressing the ship position is output to the track data generating section 10. The ship track is displayed by successively storing this ship data to output it. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
