| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an important building protection system which prevents the intentional approach of an aircraft to a building. <P>SOLUTION: The important building protection system 10 comprises a detection part 12 which is arranged at the prescribed building 11 for detecting the approach of the aircraft 20 equipped with an on-board radar guiding apparatus 21; a main ground radar guiding apparatus 13 which transmits a guide signal to the on-board radar guiding apparatus of the aircraft when the detection part detects the approach of the aircraft; sub ground radar guiding apparatuses 14, 15 and 16 which are arranged at a plurality of places so as to transmit the guide signal to the on-board radar guiding apparatus of the aircraft in order from the building to a remote place; and a control part 17 for controlling the detection part, the main ground radar guiding apparatus and the respective sub ground radar guiding apparatuses. <P>COPYRIGHT: (C)2003,JPO</p> |
