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Cao C, Su X, Liu Y, Zeng X, Feng Z, Shen J, Wang T, Yan X. Compensation for the Decoherence Effect in Heterodyne Detection of Rough Targets and a Target Vibration Characteristic Measurement System. Sci Rep 2020; 10:6077. [PMID: 32269327 PMCID: PMC7142099 DOI: 10.1038/s41598-020-62966-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 03/23/2020] [Indexed: 11/21/2022] Open
Abstract
In practical applications of signal detection, the roughness of a target surface significantly affects detection efficiency. In this paper, we propose a signal processing method that improves the sensitivity of a detection system by up to 100 times. In experiments, the target vibration measurement system successfully captured an automotive vibration power spectrum using the proposed signal processing method. This technology opens a new avenue for development in the field of rough surface target detection and recognition.
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Affiliation(s)
- Changqing Cao
- School of Physics and Optoelectronic Engineering, Xidian University, 2 South Taibai Road, Xian, 710071, China
| | - Xiyuan Su
- School of Physics and Optoelectronic Engineering, Xidian University, 2 South Taibai Road, Xian, 710071, China.
| | - Yutao Liu
- School of Physics and Optoelectronic Engineering, Xidian University, 2 South Taibai Road, Xian, 710071, China
| | - Xiaodong Zeng
- School of Physics and Optoelectronic Engineering, Xidian University, 2 South Taibai Road, Xian, 710071, China
| | - Zhejun Feng
- School of Physics and Optoelectronic Engineering, Xidian University, 2 South Taibai Road, Xian, 710071, China
| | - Jingshi Shen
- Shandong Institute of Space Electronic Technology, Yantai, 264670, China
| | - Ting Wang
- School of Physics and Optoelectronic Engineering, Xidian University, 2 South Taibai Road, Xian, 710071, China
| | - Xu Yan
- School of Physics and Optoelectronic Engineering, Xidian University, 2 South Taibai Road, Xian, 710071, China
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Gao Y, Wang X, Li Y, Zhou L, Shi Q, Li Z. Modeling method of a ladar scene projector based on physically based rendering technology. APPLIED OPTICS 2018; 57:8303-8313. [PMID: 30461782 DOI: 10.1364/ao.57.008303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 08/30/2018] [Indexed: 06/09/2023]
Abstract
The ladar scene projector is a key device in the hardware-in-the-loop (HWIL) simulation system. Ladar scene modeling is a fundamental work of developing a ladar scene projector. A modeling method based on physically based rendering technology and OpenGL is proposed in this paper. This modeling method can quickly generate delay, amplitude, and pulse width data for all return signals in a large-array-scale ladar scene. A 100×100-array-sized ladar scene model with a distance range of 0-3 km is simulated. The average data generation time is only 5.31 ms. Distance resolution is 1.5 m, and the peak-valley error is less than 0.15 m. This method achieves efficient modeling and fast hardware update rates, which greatly improves the real-time performance of the ladar scene projector. It has strong practicality and can be directly applied in the HWIL simulation system.
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Der SZ, Chellappa R, Rignot EJM. Statistical characterization of forward looking infra-red, laser radar and synthetic aperture radar imagery. J Appl Stat 2011. [DOI: 10.1080/757582977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Z. Der
- a Night Vision and Electronic Sensors DirectorateAMSEL-RD-VISP-LET
| | - R. Chellappa
- b Department of Electrical Engineering , University of Maryland
| | - E. J. M. Rignot
- c California Institute of Technology , Jet Propulsion Laboratory
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