Graph search driving mode based on extended spiral line

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...

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.

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