Graph search driving mode based on extended spiral line

A driving mode and helix technology, applied in the field of navigation search and rescue, can solve problems such as inability to realize circular search, miss the best search and rescue opportunity, incomplete search area, etc., and achieve the effects of reducing adverse reactions, wide coverage, and simple input parameters

Pending Publication Date: 2021-11-16
SHAANXI CHANGLING ELECTRONICS TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Airplanes usually fly in the way of route driving. Before flying, multiple waypoints need to be set in advance to form a route. When driving, they will fly through each waypoint in turn according to the route. It is difficult to set up multiple search and rescue routes in advance when the search guides the aircraft to search. Therefore, if the navigation search is carried out according to this route driving method, the circular search for a specific area cannot be realized, resulting in missing the best search and rescue opportunity due to the narrow search range and incomplete search area.

Method used

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  • Graph search driving mode based on extended spiral line
  • Graph search driving mode based on extended spiral line
  • Graph search driving mode based on extended spiral line

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Embodiment Construction

[0022] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] The present invention is based on route driving, uses set helix parameters, performs iterative calculation, calculates various navigation parameters, and performs circular spiral expansion flight.

[0024] refer to figure 1 , the existing flight route is composed of multiple waypoints, usually no more than 25 waypoints, and the aircraft flies in sequence according to the route composed of each waypoint planned in advance. More input information is required, and new waypoints need to be continuously input during search and rescue. The operation is complicated and it is easy to miss the search and rescue opportunity, so it is not suitable for search and rescue.

[0025] After the navigation computer completes the binding of the take-off point and edits the desired flight route, it needs to set its navigation parameters according to the si...

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Abstract

The invention provides a graph search driving mode based on an extended spiral line. The problems that in the prior art, when search rescue is carried out, parameters needing to be input are complex, efficiency is low, search areas are incomplete, and the best search and rescue opportunity is likely to be missed are mainly solved. According to the implementation scheme, according to the principle that an aircraft turns by controlling an inclination angle, firstly, four input parameters including an initial position delta, an initial radius x, a linear increasing rate xi and a turning direction lambda are set; then, an inclination angle alpha and an additional inclination angle beta are respectively calculated according to a standard control law and an airplane turning radius formula; finally, according to the new inclination angle gamma = alpha + beta, the aircraft is controlled to achieve an annular flight mode with the radius r = x + xi * dt increasing continuously, and dt is a program cycle period. The method is simple in parameter input, high in efficiency and wide in search coverage range, can effectively avoid or reduce casualties, meets the use requirements of search rescue, and can be used for an airborne navigation system.

Description

technical field [0001] The invention belongs to the technical field of navigation search and rescue, in particular to a graphic search driving mode, which can be used in an airborne navigation system. Background technique [0002] Maritime accidents occur from time to time, and the number of victims continues to increase. In order to be able to search for the specific location of the person who fell into the water or the victim, the aircraft will be used to search within a certain area. After the target is searched, a helicopter or a lifeboat will be dispatched to rescue the victim. [0003] In order to improve the success rate of my country's maritime search and rescue, the search guide aircraft is used to search first. When the target is found, dyeing bombs are thrown in the area near the target, and the standby helicopter team is notified of the specific location of the target to carry out follow-up rescue. [0004] When the search guides the aircraft to perform a search...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/10G05D1/08
CPCG05D1/0808G05D1/106
Inventor 李松杨付先潘雁坤靳鹏昭陈晓东李俊峰董创业李楠刘志强李洋郭敏司蓉蓉陈维蛇高少辰
Owner SHAANXI CHANGLING ELECTRONICS TECH
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