Design and implementation of infrared/laser dual-mode compound detection system
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REVIEW
Design and implementation of infrared/laser dual-mode compound detection system Sheng Song1,2
· Weiming Xu2 · Rong Shu2,3
Received: 18 April 2020 / Revised: 31 May 2020 / Accepted: 4 June 2020 © Shanghai Jiao Tong University 2020
Abstract This study explored an infrared/laser dual-mode compound detection mode. To be specific, the infrared system and laser radar were combined in common path, and the target at a far distance can be recognized, tracked and located using infraredguided laser-detection mode. The combination of the two single-mode detection techniques, namely, infrared passive imaging and laser active detection, can complement their own advantages, thereby achieving the acquisition of multi-dimensional information of the target such as the azimuth angle, the pitch angle, the velocity, and the range. To enhance the laser’s coherent detection efficiency, a piezoelectric-driven double-sided fast-steering mirror was innovatively developed, which realized emission, receiving, and registration of laser with the use of two reflection sides of a mirror. This study proposed the system indexes and overall architecture in accordance with actual application requirements, and developed an infrared/laser compound detection prototype. The pointing range, the scanning velocity of the system, the infrared target detection, and recognition as well as the range and velocity measurement performances of the linear frequency modulation (LFM) continuous wave laser were examined in depth. Finally, an outdoor scaled experiment at a range of 40 m was designed. The experimental results proved that the designed system can meet the expectations in performance. Keywords Infrared and laser · Dual-mode compound detection · Piezoelectric-driven double-sided fast-steering mirror · Symmetrical triangular linear frequency modulation (LFM) · Laser coherent detection
1 Introduction Currently, the main object of spacial target detection is aircraft with jet power unit. After the establishment of the monitoring system, these spacial targets can be found and recognized at the first time, and the information including orientation and range can be accurately derived so as to provide the greatest information assurance for their own equipment and contribute to accurate decision-making [1]. However,
B
Sheng Song [email protected] Rong Shu [email protected]
1
University of Chinese Academy of Sciences, Beijing 100049, China
2
Key Laboratory of Space Active Opto-Electronics Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
3
Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, Anhui, China
these space targets are generally small in volume and move fast, which are simultaneously screened by many false and artificially cheating targets. How to effectively recognize and track these targets has always been a technical problem worth pursuing further [2]. Multi-mode compound detection fulfills ta
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