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Systems and methods for landing and takeoff guidance

A radar system and land-based technology, applied in the field of systems and methods for landing and take-off guidance, capable of solving problems such as unreliability of optical image sensors

Pending Publication Date: 2020-10-20
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, optical image sensors can be unreliable due to external variables (i.e., weather affecting optical imaging)

Method used

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  • Systems and methods for landing and takeoff guidance
  • Systems and methods for landing and takeoff guidance
  • Systems and methods for landing and takeoff guidance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Embodiment 1 includes a method of landing and taking off a vehicle, the method comprising: transmitting a radar signal from the vehicle toward a landing site; receiving at the vehicle a radar return signal reflected from a reflective symbol at the landing site; using the reflected The radar return image of the symbol to determine the guidance vector, range, and relative velocity relative to the touchdown site; and use the guidance vector, range, and relative velocity to guide the vehicle to the touchdown site.

Embodiment 2

[0064] Embodiment 2 includes the method of embodiment 1, wherein the at least one radar signal is transmitted by at least one of phased array radar, synthetic aperture radar, and inverse synthetic aperture radar.

Embodiment 3

[0065] Embodiment 3 includes the method of any one of Embodiments 1-2, further comprising: receiving at the vehicle at least one radar signal reflected from the data symbol at the landing site; comparing the data symbol to a database of symbols; determining at least one of the size of the reflective symbol, the landing site designation, the landing order, and the take-off order from the symbol database; One to guide the vehicle.

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PUM

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Abstract

The invention is entitled systems and methods for landing and takeoff guidance. The invention discloses techniques for allowing a vehicle equipped with at least one radar to take-off and land using radar return images of a landing site. The at least one radar generates radar return image(s) of the landing site, specifically of reflective symbols attached to the landing site, allowing the vehicle to orient itself to the landing site and providing information specific to the landing site. Position and velocity in relation to a landing site can be determined using at least one radar and a guidance and landing system. Using the position and velocity information, the guidance and landing system can guide the vehicle to and from the landing site and / or determine whether an obstacle requires theuse of an alternate landing site.

Description

Background technique [0001] Emerging technologies allow the operation of vehicles (e.g., air taxis, delivery drones) that are required for landing and Reliable, safe and precise device for takeoff. However, a GNSS receiver may provide position information with reduced accuracy or be unable to provide any position information at all (eg because the GNSS signals are blocked by structures or interfered with). For a vehicle during landing or takeoff, even if the position information is degraded or lost instantaneously, it will cause a collision with the landing site or adjacent obstacles. Vehicles performing takeoff or landing require extreme navigation accuracy to operate when the landing site is located in an urban environment. [0002] While the above problem can occur when a human is operating the vehicle, the problem can be more severe for an autonomous vehicle. In some cases, an autonomous vehicle lacks assistance systems (other than a GNSS receiver) to determine its posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/91G01S13/86
CPCG01S13/913G01S13/86G01S13/933G01S7/411G01S13/60G01S13/874G08G5/025G08G5/0021G08G5/0065G05D1/0676G01S13/935B64C29/00G01S13/953G05D1/102
Inventor 拜伦·伯克达尔马克·M·波斯
Owner HONEYWELL INT INC