| 摘要 |
<p>PURPOSE:To prevent a weather clutter, etc., other than an aircraft from being tracked by correlating the converted position coordinates of an airport control radar and a secondary control radar with a new target of the accurate measuring entry radar in three or two dimensions. CONSTITUTION:A target detection part 4 is informed of a beam direction at the time of reception with data from a beam direction control part 8 to detect the distance, azimuth, and elevation of a target and send them to a PAR and ASR/SIF correlation processing part 10 as search target data r', theta'AZ, and theta'EL. On the other hand, ASR/SIF data from the airport control radar and secondary control radar are inputted to a coordinate conversion part 9 and converted from position data R, theta, and H to data (r), thetaAZ, and thetaEL of the coordinate system of the accurate measurement entry radar (PAR); and tracking start target data is selected by three-dimensional position correlation 10a when there is high-level data H or two-dimensional position correlation 10b when not and a tracking start position is determined. Consequently, the weather clutter, etc., is prevented from being tracked and even a target corresponding to ASR/SIF data including no high-level data can begin to be tracked by the PAR.</p> |
