| 摘要 |
PCT No. PCT/EP91/01733 Sec. 371 Date May 6, 1992 Sec. 102(e) Date May 6, 1992 PCT Filed Sep. 12, 1991 PCT Pub. No. WO92/05529 PCT Pub. Date Apr. 2, 1992.In a process and an apparatus for the avoidance of airplane collisions in which at least one light source of a light flash warning apparatus on an airplane generates light flashes at periodic intervals, light flashes with a constant frequency are emitted from a first light source and light flashes with a variable frequency are emitted from a second light source, thereby increasing the warning effectiveness, localizing capability and, thereby, safety during operation of the airplane.
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