Aircraft penetration trajectory planning method based on RRT* algorithm

A trajectory planning and aircraft technology, applied in the direction of instruments, non-electric variable control, control/regulation systems, etc., can solve the problems that the optimality of the planning results cannot be guaranteed, and the trajectory cost is not considered.

Active Publication Date: 2018-12-07
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the RRT algorithm does not consider the trajectory cost between nodes during the expansion process, so the optimality of the planning result cannot be guaranteed. On this basis, Karaman and Frazzoli proposed a RRT* algorithm that considers the trajectory cost. RRT has t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aircraft penetration trajectory planning method based on RRT* algorithm
  • Aircraft penetration trajectory planning method based on RRT* algorithm
  • Aircraft penetration trajectory planning method based on RRT* algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] The computing environment for simulation is Intel(R) Core(TM) i5-2320 3.30GHz PC, and the programming environment is Matlab2015b. The penetration area is 900×650km, the starting coordinates of the aircraft are (100,100)km, and the initial heading angle θ 0 is 45°, and the target area is a circular area with (800,400)km as the center and 50km as the radius. Suppose the aircraft is flying at a low altitude of 1km, the flight speed V is 270m / s, and the minimum turning radius ρ is 25km. The RCS data used is as follows: figure 2 As shown, the radar parameter c 1 and c 2 The values ​​are 1.01 and 10 respectively -21 , and the minimum probability P that the aircraft is detected by each radar a Both are 0.3.

[0084] Two assumptions are used to illustrate the feasibility and effectiveness of an aircraft penetration trajectory planning method based on the RRT* algorithm disclosed in this embodiment. The radar position coordinates of Scenario 1 and Scenario 2 are shown in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an aircraft penetration trajectory planning method based on an RRT* algorithm and belongs to the field of aircraft trajectory planning. The implementation method disclosed in the present invention comprises the following steps: based on RCS data of an aircraft under different attitudes in a circumferential direction, a radar detection probability model is established to determine the probability that the aircraft is detected by radar during penetration processes; an aircraft penetration trajectory planning model is established based on a Dubins path; based on the RRT* algorithm and the aircraft penetration trajectory planning model, penetration trajectory planning is conducted, that is, the penetration trajectory planning is conducted based on combination of asymptotic optimality of the RRT* algorithm and a feature of a shortest Dubins path, the cost of aircraft penetration trajectory planning can be effectively reduced, an aircraft penetration trajectory can beobtained, and effective penetration of the aircraft can be achieved. Since no numerical integration method is needed for the Dubins path to solve a dynamic model, a principle to solve based on a geometric method, and therefore efficiency of the trajectory planning can be improved. The aircraft penetration trajectory planning method disclosed in the invention can be applied to stealth penetrationtrajectory planning of the aircraft, and is especially suitable for the stealth penetration trajectory planning of an airplane.

Description

technical field [0001] The invention relates to an aircraft penetration trajectory planning method based on RRT* algorithm, which belongs to the field of aircraft trajectory planning. Background technique [0002] In modern warfare, with the rapid development of remote sensing and detection technology, the detection capability and deployment level of air defense systems have been greatly improved, and aircraft penetration missions will face serious threats. Among them, enemy radar is the main threat to aircraft penetration . Therefore, improving the stealth performance of aircraft in a high-density radar environment is of great significance to improving the survivability and combat effectiveness of aircraft. [0003] Stealth aircraft has an important feature of low radar cross section (RCS), and as the angle of the fuselage relative to the radar incident wave changes dynamically, the circumferential RCS value of the aircraft changes dynamically. According to the dynamic RC...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G05D1/10
CPCG05D1/101
Inventor 龙腾魏钊刘莉王祝徐广通
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap