Device and method for assisting in the landing of an aircraft in conditions of reduced visibility
An auxiliary device, aircraft technology, applied to other sensors, "EVS" landing assistance system field, can solve the problem of rough angle resolution, roughness, etc.
Inactive Publication Date: 2020-05-29
THALES SA
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Problems solved by technology
However, even though these sensors have good distance resolution, their angular resolution is much coarser than optical solutions
Resolution is directly related to the size of the antenna used and is usually too coarse to achieve precise positioning of the runway at a distance sufficient to perform a recalibration maneuver
Method used
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Embodiment Construction
[0049] figure 1 Components of a device according to the invention are shown. The device assists in landing an aircraft by detecting and locating the runway relative to the aircraft. The device includes at least:
[0050] - a radar sensor 1 carried by the aircraft;
[0051] - a radar image collection system 2 that marks and stores radar images acquired by the sensors 1 and other aircraft's sensors during the clear-weather landing phase, provided by the pilot and / or navigation instruments of said aircraft;
[0052]- a learning network, which can be based, for example, on a collection of radar images, in other words on radar images acquired during a nominal landing (a nominal landing is performed during the day or night, in clear weather, rain, fog or especially snow a successful landing of , which was successfully performed without any accidents), a trained neural network 3 whose functions are acquired by means of the radar sensor 1 in real time (in other words, during the cu...
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With the device detecting and positioning the runway with respect to the aircraft, it includes at least: a radar sensor 1; a radar image collection system 2, collecting and tagging images acquired byradar sensors carried by aircraft during phases of landing on the runway under nominal conditions, the tagging of an image giving information about the positioning of the runway with respect to the aircraft carrying the sensor capturing the image; a neural network 3 trained on the basis of the images that are tagged and collected during landings on the runway under nominal conditions, the networkestimating the position of the runway with respect to the aircraft by virtue of the radar images acquired by the sensor 1 during the current landing; a functional block 4 utilizing and formatting thedata about the positioning of the runway with respect to the aircraft and coming from the neural network in order to format the data in an adapted interface.
Description
technical field [0001] The present invention relates to devices and methods for landing assistance in reduced visibility conditions. [0002] The technical field of the invention is the detection and recognition of the environment in relation to the position of the observer. The main field of use is radar, for landing assistance applications. The present invention is more precisely directed to the "EVS" (Enhanced Vision System) landing assistance system. The invention can be applied to other sensors (eg optical or electro-optic sensors). Background technique [0003] The invention solves in particular the problem of assisting the landing of an aircraft on a runway in conditions of reduced visibility, in particular caused by adverse weather conditions, for example in foggy conditions. These standards impose rules for achieving visibility during the landing phase. These rules are reflected in decision thresholds referring to the altitude of the aircraft during the descent ...
Claims
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IPC IPC(8): B64D43/00G05D1/06
CPCB64D43/00G05D1/0676B64D45/04G01S13/913G08G5/025G08G5/0013G08G5/0086G06N3/08B64D45/08G01C23/005G08G5/0021H04W4/185G06V20/176
Inventor Y·韦拉克P·加雷克P·科尔尼克
Owner THALES SA