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Peng B, Wu K, Yang Y, Wu J, Guo Z, Wang Y, Zheng Y, Lin X. Studying an off-axis optical bench for future gravity missions from the perspective of carrier-to-noise ratio. OPTICS EXPRESS 2023; 31:13751-13762. [PMID: 37157256 DOI: 10.1364/oe.485096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The inter-satellite laser ranging heterodyne interferometer is vital for future gravity missions to achieve high ranging accuracy. This paper proposes a novel off-axis optical bench design which integrates merits of the off-axis optical bench design of GRACE Follow-On mission and other on-axis designs. This design makes use of lens systems subtly to restrict the tilt-to-length coupling noise and takes advantage of the DWS feedback loop to maintain the transmitting beam and receiving beam anti-parallel. The critical parameters of the optical components are determined and the carrier-to-noise ratio for a single channel of the photoreceiver is calculated to be more than 100 dB-Hz for the high case. The off-axis optical bench design is a potential candidate for China's future gravity missions.
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Zeng Q, Zhao Z, Xiong X, Du H, Zhang W, Zhang Z, Wang P, Lei L. Design and Implementation of a Subnanometer Heterodyne Interference Signal Processing Algorithm with a Dynamic Filter. SENSORS (BASEL, SWITZERLAND) 2022; 22:5422. [PMID: 35891103 PMCID: PMC9323930 DOI: 10.3390/s22145422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/16/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
In this study, a subnanometer heterodyne interference signal processing algorithm with a dynamic filter is proposed. The algorithm can effectively reduce the measurement error caused by the noise introduced in the optical path and circuit. Because of the low signal-to-noise ratio of the measurement signal, a dynamic filter with variable coefficients is designed. The role of the bi-quadrature lock-in amplifier algorithm in the problem of different amplitudes among the measurement signal, reference signal, and uncertainty of the frequency difference of the dual-frequency laser is analyzed. With the aid of the heterodyne interferometry platform, the error in the solution results of the proposed algorithm and the conventional algorithm is compared. The results indicate that the maximum deviation of the phase increment of the algorithm does not exceed 6 mrad, the single-cycle phase difference can be subdivided by 1024, and the system resolution reaches 0.15 nm.
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Affiliation(s)
- Qilin Zeng
- Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China; (Q.Z.); (Z.Z.); (X.X.); (H.D.); (Z.Z.); (P.W.)
- Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
| | - Zhengyi Zhao
- Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China; (Q.Z.); (Z.Z.); (X.X.); (H.D.); (Z.Z.); (P.W.)
- Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
| | - Xianming Xiong
- Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China; (Q.Z.); (Z.Z.); (X.X.); (H.D.); (Z.Z.); (P.W.)
- Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
| | - Hao Du
- Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China; (Q.Z.); (Z.Z.); (X.X.); (H.D.); (Z.Z.); (P.W.)
- Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
| | - Wentao Zhang
- Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China; (Q.Z.); (Z.Z.); (X.X.); (H.D.); (Z.Z.); (P.W.)
- Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
| | - Zhicheng Zhang
- Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China; (Q.Z.); (Z.Z.); (X.X.); (H.D.); (Z.Z.); (P.W.)
- Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
| | - Peng Wang
- Department of Electrical Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China; (Q.Z.); (Z.Z.); (X.X.); (H.D.); (Z.Z.); (P.W.)
- Key Laboratory of Optoelectronic Information Processing, Guilin University of Electronic Technology, Guilin 541004, China
| | - Lihua Lei
- Shanghai Key Laboratory of Online Test and Control Technology, Shanghai 201203, China;
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