Browsing by Author "Chen, B. H."

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Design of Missile Mid-Course Guidance for Constrained Impact Angle
(2020-01-01)
Chen, B. H.
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Chen, T. L.
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機械工程學系
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Department of Mechanical Engineering
This research develops a mid-course guidance law, which enables a constrained impact angle at the engagement, in response to the needs of modern missile design. To achieve this goal and share the workload with the terminal guidance, the mid-course guidance has to regulate the missile to a specific target location and a specific flight angle for a specific "time-to-go." Therefore, conventional mid-course guidance laws are inadequate in this case. The proposed guidance law achieves this goal by recursively updating the target dynamics for the mid-course guidance, and applying optimal controls with frequently updated control parameters. Simulation results demonstrate the importance and effectiveness of the proposed method. In a simulation case, the interception missile is 100 kilometers away from the target missile, the flight speed of the two missiles are 1200 m/s and 800 m/s, respectively, and the requested impact angle is 150 degrees. The proposed method achieves the positioning error and flight-path-angle error of 791 meters and 0.56 degrees, at the end of mid-course guidance. When working with the previously developed terminal guidance, the miss distance and impact-angle error are 0.002m and 0.001 degrees at the end of the engagement.
EUV continuum from compressed multiple thin plate supercontinuum
(2016)
Huang, P. C.
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Lu, C. H.
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Chen, B. H.
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Yang, S. D.
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Chen, M. -C.
A one-cycle (3.3fs) pulse compressed from multiple thin plates generated supercontinuum has been demonstrated and used to produce a bright EUV continuum covering from 43 to 65 eV with high up-conversion efficiency of 5x10(-5).