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Research on Space Target Detection and Identification

Author: ZhangWei
Tutor: SunHanXu；JiaQingXuan
School: Beijing University of Posts and Telecommunications
Course: Mechanical and Electronic Engineering
Keywords: Space target detection and identification Visible image Infrared image Multi-sensor fusion
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 431
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Abstract

With the expanding scale of human development and utilization of space technology, space is increasingly becoming a strategic high ground \Space target detection, identification and tracking technology development is particularly active. The main task of the space target detection and identification system accurate detection and tracking of important space goals, determine the important goal of the mission, size, shape, and orbital parameters characteristics of space objects that may pose a threat to space systems, the target characteristic data are normalized classes and distribution. The space target mainly refers to the satellite, including satellite and the satellite does not work, and also include space debris, such as entering the space orbit booster rocket, protective cover and other objects into the Earth's outer space universe flier such as comets and asteroids. Traditional multi-space target detection using ground-based optical telescopes, radar detectors and radio signal detector Watch space target detection and tracking. The advantage of this detection method is a more mature technology, low investment costs, to be able to effectively search and tracking of space targets, but also vulnerable to the weather, location and time constraints, small goals and objectives of the details of the observations affected. In order to overcome the shortcomings of the foundation space target detection system, the space powers to carry out the development and application of space-based space target detection technology. Space-based space target detection by various detectors into the space environment on space target detection. The detection method to overcome the shortcomings of the Ground-based space target detection, can avoid the impact of the observed effects in the atmosphere, but also to avoid the limitations of geography and time, and can get better detection results. Currently, space-based space target detection variety of detection methods, these detection methods have their own advantages and disadvantages, and the the single information obtained by the single detector or a single detection method has been difficult to achieve the detection requirements. In order to overcome the space-based space target detection using a single sensor or single defects detection method, the paper in a comprehensive summary of the development status of domestic and international space-based space target detection and identification field based on the space-based space target detection and identification multi-load fusion technology research. First, for the special background of the space environment, and the limitations of single-load detection based on space-based infrared and visible space target multiple load the integration program, the decomposition of the key technologies in the scheme on the part of the key technologies for the study. Then, on this basis, to carry out the visible light and infrared two types of observation load multiple load image processing and recognition technologies for long-distance and close two typical stages separately proposed a space-based space target detection, multiple load fusion technology Binocular ranging method and methods; the close target positioning technology research; to build functional verification platform for simulation and verification of the proposed multi-load fusion technology. The platform already has experimental demonstration and expand the technical basis and requirements, and to lay the foundation for further study of multiple load fusion technology for space-based space target detection and identification.

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