Kohler-Polarization Sensor for Glint Removal in Water-Leaving Radiance Measurement
High-precision hyperspectral remote sensing reflectance measurement of water bodies serves as the fundamental technical basis for accurately retrieving spatiotemporal distribution characteristics of water quality parameters, providing critical data support for dynamic monitoring of aquatic ecosystem...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-06-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/17/12/1977 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850165269803040768 |
|---|---|
| author | Shuangkui Liu Yuchen Lin Ye Jiang Yuan Cao Jun Zhou Hang Dong Xu Liu Zhe Wang Xin Ye |
| author_facet | Shuangkui Liu Yuchen Lin Ye Jiang Yuan Cao Jun Zhou Hang Dong Xu Liu Zhe Wang Xin Ye |
| author_sort | Shuangkui Liu |
| collection | DOAJ |
| description | High-precision hyperspectral remote sensing reflectance measurement of water bodies serves as the fundamental technical basis for accurately retrieving spatiotemporal distribution characteristics of water quality parameters, providing critical data support for dynamic monitoring of aquatic ecosystems and pollution source tracing. To address the critical issue of water surface glint interference significantly affecting measurement accuracy in aquatic remote sensing, this study innovatively developed a novel sensor system based on multi-field-of-view Kohler-polarization technology. The system incorporates three Kohler illumination lenses with exceptional surface uniformity exceeding 98.2%, effectively eliminating measurement errors caused by water surface brightness inhomogeneity. By integrating three core technologies—multi-field polarization measurement, skylight blocking, and high-precision radiometric calibration—into a single spectral measurement unit, the system achieves radiation measurement accuracy better than 3%, overcoming the limitations of traditional single-method glint suppression approaches. A glint removal efficiency (GRE) calculation model was established based on a skylight-blocked approach (SBA) and dual-band power function fitting to systematically evaluate glint suppression performance. Experimental results show that the system achieves GRE values of 93.1%, 84.9%, and 78.1% at ±3°, ±7°, and ±12° field-of-view angles, respectively, demonstrating that the ±3° configuration provides a 9.2% performance improvement over the ±7° configuration. Comparative analysis with dual-band power-law fitting reveals a GRE difference of 2.1% (93.1% vs. 95.2%) at ±3° field-of-view, while maintaining excellent consistency (ΔGRE < 3.2%) and goodness-of-fit (R<sup>2</sup> > 0.96) across all configurations. Shipborne experiments verified the system’s advantages in glint suppression (9.2%~15% improvement) and data reliability. This research provides crucial technical support for developing an integrated water remote sensing reflectance monitoring system combining in situ measurements, UAV platforms, and satellite observations, significantly enhancing the accuracy and reliability of ocean color remote sensing data. |
| format | Article |
| id | doaj-art-02c4dc227d6d415ea080ecf395e6e33a |
| institution | OA Journals |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-02c4dc227d6d415ea080ecf395e6e33a2025-08-20T02:21:47ZengMDPI AGRemote Sensing2072-42922025-06-011712197710.3390/rs17121977Kohler-Polarization Sensor for Glint Removal in Water-Leaving Radiance MeasurementShuangkui Liu0Yuchen Lin1Ye Jiang2Yuan Cao3Jun Zhou4Hang Dong5Xu Liu6Zhe Wang7Xin Ye8Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaHigh-precision hyperspectral remote sensing reflectance measurement of water bodies serves as the fundamental technical basis for accurately retrieving spatiotemporal distribution characteristics of water quality parameters, providing critical data support for dynamic monitoring of aquatic ecosystems and pollution source tracing. To address the critical issue of water surface glint interference significantly affecting measurement accuracy in aquatic remote sensing, this study innovatively developed a novel sensor system based on multi-field-of-view Kohler-polarization technology. The system incorporates three Kohler illumination lenses with exceptional surface uniformity exceeding 98.2%, effectively eliminating measurement errors caused by water surface brightness inhomogeneity. By integrating three core technologies—multi-field polarization measurement, skylight blocking, and high-precision radiometric calibration—into a single spectral measurement unit, the system achieves radiation measurement accuracy better than 3%, overcoming the limitations of traditional single-method glint suppression approaches. A glint removal efficiency (GRE) calculation model was established based on a skylight-blocked approach (SBA) and dual-band power function fitting to systematically evaluate glint suppression performance. Experimental results show that the system achieves GRE values of 93.1%, 84.9%, and 78.1% at ±3°, ±7°, and ±12° field-of-view angles, respectively, demonstrating that the ±3° configuration provides a 9.2% performance improvement over the ±7° configuration. Comparative analysis with dual-band power-law fitting reveals a GRE difference of 2.1% (93.1% vs. 95.2%) at ±3° field-of-view, while maintaining excellent consistency (ΔGRE < 3.2%) and goodness-of-fit (R<sup>2</sup> > 0.96) across all configurations. Shipborne experiments verified the system’s advantages in glint suppression (9.2%~15% improvement) and data reliability. This research provides crucial technical support for developing an integrated water remote sensing reflectance monitoring system combining in situ measurements, UAV platforms, and satellite observations, significantly enhancing the accuracy and reliability of ocean color remote sensing data.https://www.mdpi.com/2072-4292/17/12/1977surface glintremote sensing reflectancewater-leaving radianceoptical remote sensoroptical surveyingsurface glint |
| spellingShingle | Shuangkui Liu Yuchen Lin Ye Jiang Yuan Cao Jun Zhou Hang Dong Xu Liu Zhe Wang Xin Ye Kohler-Polarization Sensor for Glint Removal in Water-Leaving Radiance Measurement Remote Sensing surface glint remote sensing reflectance water-leaving radiance optical remote sensor optical surveying surface glint |
| title | Kohler-Polarization Sensor for Glint Removal in Water-Leaving Radiance Measurement |
| title_full | Kohler-Polarization Sensor for Glint Removal in Water-Leaving Radiance Measurement |
| title_fullStr | Kohler-Polarization Sensor for Glint Removal in Water-Leaving Radiance Measurement |
| title_full_unstemmed | Kohler-Polarization Sensor for Glint Removal in Water-Leaving Radiance Measurement |
| title_short | Kohler-Polarization Sensor for Glint Removal in Water-Leaving Radiance Measurement |
| title_sort | kohler polarization sensor for glint removal in water leaving radiance measurement |
| topic | surface glint remote sensing reflectance water-leaving radiance optical remote sensor optical surveying surface glint |
| url | https://www.mdpi.com/2072-4292/17/12/1977 |
| work_keys_str_mv | AT shuangkuiliu kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement AT yuchenlin kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement AT yejiang kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement AT yuancao kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement AT junzhou kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement AT hangdong kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement AT xuliu kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement AT zhewang kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement AT xinye kohlerpolarizationsensorforglintremovalinwaterleavingradiancemeasurement |