A Constant Elevation Search Method for Narrow Beam Radar to Capture Space Targets |
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| Institution: | 1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China;2. School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China;3. Key Laboratory of Space Object and Debris Observation, Chinese Academy of Sciences, Nanjing 210023, China;1. School of Computer Science and Technology, Xi’an University of Posts and Telecommunications, Xi’an 710121, China;2. School of Electrical and Electronic Engineering, Baoji University of Arts and Sciences, Baoji 721016, China;3. National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, China;4. SPBPU Institute of Engineering, Jiangsu Normal University, Xuzhou 221116, China;1. School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093;2. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030;3. Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210023;4. Shanghai Key Laboratory of Space Navigation and Position Techniques, Shanghai 20003 |
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| Abstract: | Position prediction is the basis of guiding radar to seek, capture, and track space targets, although there’s a risk of insufficient accuracy for narrow beam radar due to the influence of orbit determination and propagation error. Since the along-track error is the main factor that affects the accuracy of position prediction, this paper proposed a Constant Elevation Search (CES) method for narrow beam radar, based on the idea of along-track error compensation, to seek and capture transit targets. With along-track error estimation, all possible positions on a specified elevation can be observed, thus the success rate of capturing transit targets will be improved. Simulation shows that when the position prediction method fails, the CES method still works. |
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