Research On Space Target Detection And Identification

As the development scale of space technology used by human expand, the space has increasingly become a "strategy heights" of protecting national security, and the space industry also become an important pillar of national economic development. In particular, the space target detection, identification and tracking technology is active. The main task of space target detection and identification system is to detect and track the importance space target accurately, which is in order to determine whether the space target is a threat for national space system. If a space target is determined as a threat, the next step is to get the importance characteristic information about it:task, size, shape, the orbit parameter, and etc al. Finally, the data about the target characteristics will be classified and distributed. The space target include work satellite, doesn't work satellite and space debris. The space debris includes the booster rocket, shields, and other objects into space orbit, and also includes comets and asteroids.In traditional, the space target detection mainly rely on the ground-based detect net which is consist of ground-based optical telescopes, radar detectors, and radio signal detectors. The advantage of ground-based detect method include more mature technology, lower investment, and effective search and track capacity. But it can be easily constrained by weather, location and time, which will affect the detection result for small target and its details.In order to overcome the shortcomings of ground-based space target detect system, the space powers carry out the space-based space target detect technology development and applications. Space-based space target detect system can detect the objectives by sending the space target detector into space, this detection method can avoid the effect of atmosphere on the observations, and also avoid the location and time constraints, can get better detection results.Currently, space-based space target detection include a variety of detection methods, these detection method have their own advantages and disadvantages, the information obtained from a single detector or single-species detection method is limited, can't satisfy modern detection need. In order to avoid the defect of the space-based space target detection using a single sensor or single species detection method, based on comprehensively summarizing the status of domestic and international developments in the field of Space-based space target detection and identification, this paper is about the research of the Space-based Space Target detection and identification technology using multi-sensor. Due to the special background of space environment and the limitation of the single-sensor detection, the multi-sensor fusion program for the infrared and visible Space-based space target is proposed with each individual sensor design parameter in the research, and this paper also analysis the key technology. On the basis of this research, our seminar investigates the multi-sensor image processing and identifying technology with two types of observation sensor:the infrared and visible; For the two typical sections:long distance and close distance, we propose respectively the method and technique of the multi-sensor fusion for the Space-based Space Target Detection; We also adopt to the method of binocular distance measurement to analysis targeting technology for the close target; At last, we build up a verification platform to simulate and verify the proposed multi-sensor fusion technique. With the effort of our seminar, the simulation platform has met the further demand for experimental demonstration.