Arrangement for recognizing obstacles for pilots of low-flying aircraft
First Claim
1. In an arrangement for recognizing obstacles for pilots of low-flying aircraft, of the type having a pulsed laser range finder including a transmitter and a receiver for scanning a given field of view and a display, the improvement comprising:
- said transmitter being formed by a plurality semiconductor laser diodes arranged in an array and means for operating said semiconductor laser diodes for establishing a scanned field of view of focused laser pulses from said semiconductor laser diodes in a coarse grid having a mesh-like scan pattern;
said receiver being formed by a plurality of receiving detectors arranged in an array and means for operating said receiving detectors to receive reflections of the laser pulses and to generate received signals corresponding thereto; and
means for generating a representation on said display, from said received signals, of the course of a recognized obstacle in said scanned field of view.
1 Assignment
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Accused Products
Abstract
An arrangement working according to the laser radar principle comprises a pulsed laser range finder (LEM) for scanning a given field of view and for the pictorial presentation of the course of a perceived obstacle for the pilot on a display, whereby a respective array of semiconductor laser diodes or, respectively, of receiving detectors is provided as a transmitter and as a receiver of the laser range finder and the scanning of the field of view occurs with a mesh network-like pattern. As a result of these measures, the expense for the individual components of the arrangement is minimized and a simple, compact structure is achieved. The arrangement is suitable for obstacle warning for aircraft, particularly for low-flying helicopters.
172 Citations
28 Claims
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1. In an arrangement for recognizing obstacles for pilots of low-flying aircraft, of the type having a pulsed laser range finder including a transmitter and a receiver for scanning a given field of view and a display, the improvement comprising:
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said transmitter being formed by a plurality semiconductor laser diodes arranged in an array and means for operating said semiconductor laser diodes for establishing a scanned field of view of focused laser pulses from said semiconductor laser diodes in a coarse grid having a mesh-like scan pattern; said receiver being formed by a plurality of receiving detectors arranged in an array and means for operating said receiving detectors to receive reflections of the laser pulses and to generate received signals corresponding thereto; and means for generating a representation on said display, from said received signals, of the course of a recognized obstacle in said scanned field of view. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification