| 摘要 |
<p>PURPOSE:To enhance safety and efficiency by additionally displaying an altitude limit range due to an obstacle besides a cursor for indicating a safe altitude limit on an extension line of a runway in an indicating device for control of a precision approach radar. CONSTITUTION:A precision approach radar display device is constituted of a range mark generating part 2, a servo display control part 3, a mixing/ amplifying part 4, a display part 5, a sweep generating part 6, a map generating part 7, a timing generating part 8 and a deflecting amplifying part 9, and is operated together with a precision approach radar 1. Information on an obstacle existing in an operation air area is stored in an altitude limit information storage part in elevation angles. A necessary obstacle data is read out by a read-out control part 12 based on a display timing signal outputted by the sweep generating part 6 as well as target position information outputted by the precision approach radar 1, converted into a map data by a control map generating part 11, subjected to time sharing output control and displayed on the diaplay part 5 via the deflecting amplifying part 9.</p> |
