Conceptual Design and Image Motion Compensation Rate Analysis of Two-Axis Fast Steering Mirror for Dynamic Scan and Stare Imaging System
| Autor: | Yalin Ding, Sun Jianjun, Guoqin Yuan, Yuquan Zheng, Zhang Hongwen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Computer science
Dynamic imaging Coordinate system Hinge aluminum mirror Angular velocity TP1-1185 Gimbal Biochemistry Article Analytical Chemistry Compensation (engineering) fast steering mirror (FSM) Computer vision flexural pivot Electrical and Electronic Engineering Instrumentation Dynamic Scan business.industry Chemical technology coordinate transformation Atomic and Molecular Physics and Optics Flight test dynamic step and stare Artificial intelligence business image motion compensation (IMC) |
| Zdroj: | Sensors, Vol 21, Iss 6441, p 6441 (2021) Sensors Volume 21 Issue 19 Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| Popis: | In order to enable the aerial photoelectric equipment to realize wide-area reconnaissance and target surveillance at the same time, a dual-band dynamic scan and stare imaging system is proposed in this paper. The imaging system performs scanning and pointing through a two-axis gimbal, compensating the image motion caused by the aircraft and gimbal angular velocity and the aircraft liner velocity using two two-axis fast steering mirrors (FSMs). The composition and working principle of the dynamic scan and stare imaging system, the detailed scheme of the two-axis FSM and the image motion compensation (IMC) algorithm are introduced. Both the structure and the mirror of the FSM adopt aluminum alloys, and the flexible support structure is designed based on four cross-axis flexural hinges. The Root-Mean-Square (RMS) error of the mirror reaches 15.8 nm and the total weight of the FSM assembly is 510 g. The IMC rate equations of the two-axis FSM are established based on the coordinate transformation method. The effectiveness of the FSM and IMC algorithm is verified by the dynamic imaging test in the laboratory and flight test. |
| Databáze: | OpenAIRE |
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