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Photonics
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New Progress in Optical Precision Measurement in the Field of...
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New Progress in Optical Precision Measurement in the Field of Space Technology

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optical Interaction Science".

Deadline for manuscript submissions: 30 December 2025 | Viewed by 746

Special Issue Editors

Dr. Zhongwen Deng

E-Mail Website
Guest Editor
Academy of Advanced Interdisciplinary Research, Xidian University, Xi'an, China
Interests: space precision measurement; laser FMCW ranging; high-precision inter-satellite baseline measurement
Dr. Xingyu Jia

E-Mail Website
Guest Editor
Department of Precision Instruments and Mechanical Engineering, Tsinghua University, Beijing, China
Interests: integrated lithium niobate photonics; optical frequency comb; frequency modulated CW LiDAR

Special Issue Information

Dear Colleagues,

We are pleased to announce a Special Issue titled “New Progress in Optical Precision Measurement in the Field of Space Technology”. As space exploration and astronomical observations continue to advance, the need for high-precision optical measurement techniques has become more critical than ever. This Special Issue will showcase cutting-edge research on innovative methodologies, novel instrumentation, and advanced data processing techniques that enhance the accuracy and efficiency of optical measurement in space applications. We welcome contributions from researchers and experts across the fields of space optics, precision metrology, and astronomical measurements. By bringing together the latest developments in this field, we hope to foster collaboration and inspire future advancements in space optical measurement technologies. We invite you to submit original research, reviews, and technical papers to this Special Issue and contribute to the ongoing evolution of precision optical measurement in space exploration. This Special Issue aims to highlight the latest breakthroughs in space-based optical metrology, including but not limited to the following research areas:

  • Optical interferometry;
  • Laser ranging;
  • LiDAR;
  • Optical imaging;
  • Laser FMCW;
  • New methods in optical precision measurement;
  • Applications of Optical measurement in the field of space technology.

Dr. Zhongwen Deng
Dr. Xingyu Jia
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • optical interferometry
  • Laser Ranging
  • LiDAR
  • optical imaging
  • FMCW
  • image processing
  • laser comb

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

13 pages, 1676 KB  
Article
Robust and Interpretable Machine Learning for Network Quality Prediction with Noisy and Incomplete Data
by Pei Huang, Yicheng Li, Hai Gong and Herman Koara
Photonics 2025, 12(10), 965; https://doi.org/10.3390/photonics12100965 (registering DOI) - 29 Sep 2025
Abstract
Accurate classification of optical communication signal quality is crucial for maintaining the reliability and performance of high-speed communication networks. While existing supervised learning approaches achieve high accuracy on laboratory-collected datasets, they often face difficulties in generalizing to real-world conditions due to the lack [...] Read more.
Accurate classification of optical communication signal quality is crucial for maintaining the reliability and performance of high-speed communication networks. While existing supervised learning approaches achieve high accuracy on laboratory-collected datasets, they often face difficulties in generalizing to real-world conditions due to the lack of variability and noise in controlled experimental data. In this study, we propose a targeted data augmentation framework designed to improve the robustness and generalization of binary optical signal quality classifiers. Using the OptiCom Signal Quality Dataset, we systematically inject controlled perturbations into the training data including label boundary flipping, Gaussian noise addition, and missing-value simulation. To further approximate real-world deployment scenarios, the test set is subjected to additional distribution shifts, including feature drift and scaling. Experiments are conducted under 5-fold cross-validation to evaluate the individual and combined impacts of augmentation strategies. Results show that the optimal augmentation setting (flip_rate = 0.10, noise_level = 0.50, missing_rate = 0.20) substantially improve robustness to unseen distributions, raising accuracy from 0.863 to 0.950, precision from 0.384 to 0.632, F1 from 0.551 to 0.771, and ROC-AUC from 0.926 to 0.999 compared to model without augmentation. Our research provides an example for balancing data augmentation intensity to optimize generalization without over-compromising accuracy on clean data. Full article
(This article belongs to the Special Issue New Progress in Optical Precision Measurement in the Field of Space Technology)
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12 pages, 5419 KB  
Article
High-Precision Point-Ahead Angle Real-Time Prediction Algorithm for Inter-Satellite Laser Links
by Xiangnan Liu, Xiaoping Li, Zhongwen Deng and Haifeng Sun
Photonics 2025, 12(9), 886; https://doi.org/10.3390/photonics12090886 - 3 Sep 2025
Viewed by 438
Abstract
The accurate prediction of the point-ahead angle (PAA) is crucial for applications of inter-satellite laser links (ISLLs), especially laser ranging and continuous communication. Herein, a real-time and high-precision point-ahead-angle algorithm is presented; the principle of the algorithm is mathematically characterized, and its performance [...] Read more.
The accurate prediction of the point-ahead angle (PAA) is crucial for applications of inter-satellite laser links (ISLLs), especially laser ranging and continuous communication. Herein, a real-time and high-precision point-ahead-angle algorithm is presented; the principle of the algorithm is mathematically characterized, and its performance is simulated and verified using typical on-orbit scenarios. The maximum PAAs of a typical geosynchronous equatorial orbit (GEO)–GEO link and low Earth orbit (LEO)–GEO link were simulated with this algorithm, and the results are consistent with those of typical calculation methods, proving the algorithm’s accuracy. The performance of the proposed algorithm was verified using a practical engineering application of ISLLs, where it was used to calculate the point-ahead angle during stable on-orbit communication. The Pearson correlations between the curves of azimuth, elevation, and total point-ahead angles, and the actual experimental data are 99.91%, 52.32%, and 98.01%, respectively. The corresponding average deviations are −5.8510 nrad, −1.0945 nrad, and −79.5403 nrad, respectively. The maximum calculation error is 5.2103%, and the calculation accuracy exceeds 94%. The above results show that the algorithm produces results that closely match actual on-orbit experimental data with high calculation accuracy, enabling the accurate prediction of the point-ahead angle and the improvement of ISLL stability. Additionally, with this method, the measurement error of the laser ranging is smaller than 50 μm, further enhancing the accuracy of precision measurements based on ISLLs. Full article
(This article belongs to the Special Issue New Progress in Optical Precision Measurement in the Field of Space Technology)
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