Atmospheric imaging research based on laser optics technology, including the distribution of clouds, aerosols and atmospheric pollutants, as well as remote sensing observations of the atmosphere using satellites and aircraft platforms.

Through the research of laser remote sensing technology, the carbon emissions of strong point sources are monitored and evaluated, so as to provide accurate data support and provide decision-making basis for relevant departments to formulate emission reduction measures and management policies.

Differential absorption lidar technology is used to monitor CO2 concentration worldwide, and the temporal and spatial distribution of CO2 in the atmosphere is deeply studied, so as to provide important data for the study of global carbon cycle and climate change.

Optical remote sensing technology is used to study the acquisition and application of land surface elevation information, including the generation of digital elevation model (DEM), the extraction of topographic features, and the monitoring of land surface changes, so as to provide support for geological exploration, geomorphological research and natural disaster prevention.

1. Jun Yan; Yiming Cao; Bin Kang; Xiaohuan Wu; Liang Chen. An ELM-Based Semi-Supervised Indoor Localization Technique With Clustering Analysis and Feature Extraction. IEEE Sensors Journal ( IF 3.073 ) .2020,10(5) , DOI: 10.1109/jsen.2020.3028579
2. Yue Yu, Ruizhi Chen*, Liang Chen, Wei Li, Yuan Wu, Haitao Zhou. Precise 3D Indoor Localization Based on Wi-Fi FTM and Built-in Sensors. IEEE Journal of Internet of Things
3. Nan Shen, Liang Chen*, Lei Wang, Xiangchen Lu, Tingye Tao, Jun Yan, and Ruizhi Chen. Site-Specific Real-time GNSS Multipath Mitigation Based on Coordinate Time Series Window Matching. GPS Solutions,24,82 (2020) DOI:10.1007/s10291-020-00994-z（二区）
4. X. Zhou, L. Chen, J. Yan and R. Chen, "Accurate DOA Estimation With Adjacent Angle Power Difference for Indoor Localization," IEEE Access, vol. 8, pp. 44702-44713, 2020（二区）
5. Yue Yu, Ruizhi Chen*, Liang Chen, Wei Li, Yuan Wu, Haitao Zhou.Precise 3D Indoor Localization Based on Wi-Fi FTM and Built-in Sensors,IEEE Internet of Things Journal[J]. IEEE Internet of Things Journal, 2020, PP(99):1-1. (一区)
6. Yuanjin Pan, Ruizhi Chen, Shuang Yi, Wei Wang, Hao Ding, Wenbin Shen, Liang Chen. Contemporary Mountain‐Building of the Tianshan and its Relevance to Geodynamics Constrained by Integrating GPS and GRACE Measurements. Journal of Geophysical Research: Solid Earth, 2019, 124(11).
7. Zhipeng Cao, Yifan Cheng, Ruizhi Chen, Guangyi Guo, Feng Ye, Liang Chen & Yuanjin Pan (2019) An infant monitoring system with the support of accurate real-time indoor positioning, Geo-spatial Information Science, 22:4, 279-289, DOI: 10.1080/10095020.2019.1631617
8. Shen N, Chen, L.* Liu J, Wang L, Tao T, Wu D, Chen R. A Review of Global Navigation Satellite System (GNSS)-Based Dynamic Monitoring Technologies for Structural Health Monitoring. Remote Sensing. 2019; 11(9):1001.
9. Yue Yu, Ruizhi Chen*, Liang Chen, Guangyi Guo, Feng Ye and Zuoya Liu. A Robust Dead Reckoning Algorithm Based on Wi-Fi FTM and Multiple Sensors. Remote Sens. 2019, 11(5), 504-526; doi:10.3390/rs11050504.
10. Yan, J.; Zhu, B.; Chen, L.*; Wang, J.; Liu, J. Error Analysis on Indoor Localization with Visible Light Communication. Remote Sensing, 2019,11 (4), 427-444. doi:10.3390/rs11040427
11. Guo, G.; Chen, R.; Ye, F.; Chen, L.; Pan, Y.; Liu, M.; Cao, Z. A Pose Awareness Solution for Estimating Pedestrian Walking Speed. Remote Sens. 2019, 11, 5. doi:10.3390/rs11010055
12. Liang Chen*, Olivier Julien, Elena-Simona Lohan, Gonzalo Seco-Granados, and Ruizhi Chen. Mobile Geospatial Computing Systems for UbiquitousPositioning. Mobile Information Systems Volume 2018, Article ID 9138095,pp. 1-2， 2018
13. Jun Yan, Lin Zhao, Jian Tang, Yuwei Chen, Ruizhi Chen, Liang Chen*. Hybrid Kernel Based Machine Learning Using Received Signal Strength Measurements for Indoor Localization. IEEE Transactions on Vehicular Technology, 2018, 67(3): 2824 – 2829, DOI: 10.1109/TVT.2017.2774103
14. Xinlian Liang, Juha Hyyppa, Harri Kaartinen, Liang Chen etal. International benchmarking of terrestrial laser scanning approaches for forest inventories, ISPRS Journal of Photogrammetry and Remote Sensing, vol. 144, October 2018, pp. 137-179. DOI: 10.1016/j.isprsjprs.2018.06.021
15. Dewen Wu, Ruizhi Chen*, Liang Chen. Visual Positioning Indoors: Human Eyes vs. Smartphone Cameras, MDPI Sensors，2017, 17 (11), 2645 16. Liang Chen*, Lie-Liang Yang, Jun Yan, Ruizhi Chen. Joint Wireless Positioning and Emitter Identification in DVB-T Single Frequency Networks. IEEE Transactions on Broadcasting, 2017, vol. 63, no. 3, pp. 577-582, 2017.
17. Jun Yan, Kegen Yu, Yangqin Cao, Liang Chen*. Attack-Resistant Received Signal Strength based Compressive Sensing Wireless Localization. KSII Transactions on Internet and Information Systems, 2017, vol. 11, no. 9, pp. 4418-4437.
18. Liang Chen*, Sarang Thombre, Kimmo Jarvinen, Elena Simona Lohan, Anette Alen-Savikko, Helena Leppakoski, M. Zahidul H. Bhuiyan, Shakila Bu-Pasha, Giorgia Nunzia Ferrara, Salomon Honkala, Jenna Lindqvist, Laura Ruotsalainen, Paivi Korpisaari and Heidi Kuusniemi. Robustness, Security and Privacy in Location-Based Services for Future IoT: A Survey. IEEE Access, 2017, vol. 5, Issue 1, pp. 8956-8977, 2017. (SCI)
19. Jun Yan, Kegen Yu, Ruizhi Chen, Liang Chen*. An improved Compressive Sensing and Received Signal Strength-based Target Localization Algorithm with Unknown Target Population for Wireless Area Networks, Sensors, 2017, vol. 17,no. 6, pp. 1246-1263. doi: 10.3390/s17061246 (SCI EI)
20. Liang Chen*, Paul Thevenon, Gonzalo Seco-Granados, Olivier Julien and Heidi Kuusniemi. Analysis on TOA Tracking with DVB-T Signals for Positioning. IEEE Trans. on Broadcasting. 2016, vol. 62, no. 4, pp. 957-961(SCI, EI)
21. Liang Chen*, Olivier Julien, Paul Thevenon, Damien Serant and Heidi Kuusniemi. TOA Estimation for Positioning with DVB-T Signals in Outdoor Static Tests. IEEE Transactions on Broadcasting, 2015, vol. 61, no. 4, pp. 33-38. (SCI:CY8NU, EI:20153901302080)
22. Liang Chen, Robert Piche, Heidi Kuusniemi and Ruizhi Chen. Adaptive Mobile Tracking in Unknown Non-line-of-sight Conditions with Application to Digital TV Networks. EURASIP Journal on Advances in Signal Processing, 2014:22 doi:10.1186/1687-6180-2014-22. (SCI: AF0PD,EI: 20141817684286)
23. Liang Chen, Ling Pei, Chen, Heidi Kuusniemi, Yuwei Chen, Tuomo Kröger and Ruizhi Chen. Bayesian Fusion for Indoor Positioning Using Bluetooth Fingerprints. Wireless Personal Communications, 2013, vol. 70, no. 4, pp. 1735—1745. (SCI:165EC, EI:20132416411147)
24. Liang Chen, Simo Ali-Löytty, Robert Piche and Wu Lenan.Mobile tracking in mixed line-of-sight/non-line-of-sight conditions: algorithm and theoretical lower bound, Wireless Personal Communications, vol. 65, no. 4, pp. 753-771, 2012. (SCI:969rn, EI:20123215327708)
25. Liang Chen and Wu Lenan. Mobile positioning in mixed LOS/NLOS conditions using modified EKF banks and data fusion method, IEICE Transactions on Communications, vol. E92-B, no. 4, pp. 1318-1325, 2009. (SCI: 440LN ,EI: 20103813241320)
26. Liang Chen, Jin Le, Wu Lenan, Hanwen Chen. Dynamic network selection for multicast services in wireless cooperative networks, IEICE Transactions on Communications, vol. E91-B, no. 10, pp. 3069-3076, 2008. (SCI:365IU, EI:20093112226875)
27. Qian, Chuang, Hui Liu, Jian Tang, Yuwei Chen, Harri Kaartinen, Antero Kukko, Lingli Zhu, Xinlian Liang, Liang Chen, and Juha Hyyppä. An Integrated GNSS/INS/LiDAR-SLAM Positioning Method for Highly Accurate Forest Stem Mapping. Remote Sensing, no. 1 (2016): 3. (SCI EI)
28. Sarang Thombre, Heidi Kuusniemi, Stefan Söderholm, Liang Chen, Robert Guinness, Zbigniew Pietrzykowski, Piotr Wołejsza. Operational Scenarios for Maritime Safety in the Baltic Sea, Navigation, 2016, vol. 63, no. 4, pp. 521-531, DOI: 10.1002/navi.161 (SCI)
29. Wuyang Jiang, Ling Pei, Changqing Xu, Liang Chen and Wenxian Yu. Two-stage Localisation Scheme Using a Small-scale Linear Microphone Array for Indoor Environments. Journal of Navigation, 2015, vol. 68, no. 5, pp. 915-936. (SCI:CN6XN)
30. Jian Tang, Yuwei Chen, Liang Chen, Jingbin Liu, Juha Hyyppä, Antero Kukko, Harri Kaartinen, Hannu Hyyppä and Ruizhi Chen. Fast SOP Fingerprint Database Maintenance for Indoor Positioning Based on UGV SLAM. Sensors, 2015, vol.15,pp.5311-5330. (SCI:CH6QK, EI:20151800813692)
31. Jian Tang; Yuwei Chen; Xiaoji Niu, Li Wang, Liang Chen; Jingbin Liu; Chuang Shi, Juha Hyyppä. LiDAR Scan Matching Aided Inertial Navigation System in GNSS-Denied Environments. Sensors, 2015, vol. 15, Pages 16710-16728. (SCI:CS0YN, EI: 20153501212615)
32. Laura Ruotsalainen, Heidi Kuusniemi, Zahidul H. Bhuiyan, Liang Chen and Ruzhi Chen. A Two-dimensional Pedestrian Navigation Solution Aided with a Visual Gyroscope and a Visual Odometer, GPS Solutions, vol. 17, no. 4, pp. 575-586, 2013. (SCI:215YI, EI:20133816757727)
33. Heidi Kuusniemi, Liu Jingbin, Pei Ling, Chen Yuwei, Liang Chen and Chen Ruizhi. Reliability considerations of multi-sensor multi-network pedestrian navigation. IET Radar, Sonar & Navigation, vol. 6, no. 3, pp. 157-164, 2012. (SCI:899VA, EI:20121014833980)
34. Ling Pei, Robert Guinness, Ruizhi Chen, Jingbin Liu, Heidi Kuusniemi, Yuwei Chen, Liang Chen and Jyrki Kaistinen. Human Behaviour Cognition Using Smartphone, Sensors, vol. 13, no. 2, pp. 1402-1424, 2013. (SCI:096KS, EI:20131816281748)
35. Liu Jingbin, Ruizhi Chen, Pei Ling, Chen Yuwei and Liang Chen. iParking: An Intelligent Indoor Location-Based Smartphone Parking Service, Sensors, vol. 12, no. 11, pp. 14612-14629, 2012, doi:10.3390/s121114612. (SCI:041VO, EI:20131816281409)

1. 陈锐志，陈亮*. 基于智能手机的室内定位技术的发展现状和挑战, 测绘学报， 46(10)：1316-1326. DOI: 10.11947， 2017 （领跑者5000 优秀论文提名）
2. Ling Pei, Jingbin Liu, Yuwei Chen, Ruizhi Chen and Liang Chen. Evaluation of fingerprinting-based WiFi indoor localization coexisted with Bluetooth. The Journal of Global Positioning Systems. December 2017, DOI: 10.1186/s41445-017-0008-x
3. Liang Chen, Heidi Kuusniemi, Chen Yuwei, Pei Ling, Tuomo Kröger and Chen Ruizhi. Motion Restricted Information Filter for Indoor Bluetooth Positioning. International Journal on Embedded and Real-Time Communication Systems, vol 3, no. 3, pp. 54-66, 2012.
4. Laura Ruotsalainen, Liang Chen, Martti Kirkko-Jaakkola, Simo Gröhn and Heidi Kuusniemi. INTACT- Towards infrastructure-free tactical situational awareness. European Journal of Navigation, 2016, vol. 14, no. 4, pp. 33-38. ISSN 1571-473-X
5. Sarang Thombre, Robert Guineness, Liang Chen and Heidi Kuusniemi, et al. ESABALT Improvement of Situational Awareness in the Baltic with the Use of Crowdsourcing. The International Journal on Marine Navigation and Safety of Sea Transportation, 2015, vol. 9, no. 2, pp. 183-189.
6. Zahidul H. Bhuiyan, Heidi Kuusniemi, Liang Chen, Ling Pei, Laura Ruotsalainen and Ruzhi Chen. Performance Evaluation of Multisensor Fusion Models in Indoor Navigation, Journal of European Navigation, vol. 11, no. 2, pp. 20-28, 2013.
7. Liang Chen, Cheng Han wen and Wu Lenan. Modulation classification of MPSK signals based on nonparametric Bayesian inference, Journal of Southeast University (English Version), vol. 25, no. 2, pp. 171-174, 2009. (EI: 20093212240947)
8. 陈亮，何峰，冯熳，吴乐南. 基于粒子滤波的数字广播无线定位与跟踪[J]. 《信号处理》, 2009，25(4)
9. Zhaoliang Liu, Liang Chen*, Nan Shen and Ruizhi Chen. Feasibility Study of Indoor Positioning with LTE Signals. Geo-spatial Information Science （入选国内高水平期刊, major revision）

1. Xiangchen Lu, Liang Chen*, Nan Shen, Lei Wang, Zhenhang Jiao, and Ruizhi Chen. Decoding PPP Corrections from BDS B2b Signals Using a Software-defined Receiver: an Initial Performance Evaluation.Submitted to IEEE Sensors Journal （Accepted）
2. YuAn Wang, Liang Chen *, Peng Wei, XiangChen Lu，Visual-Inertial Odometry of Smartphone under Manhattan World，MDPI Remote Sensing, （Accepted）
3. Yankun Wang, Renzhong Guo, Weixi Wang, You Li, Shengjun Tang, wei zhang, Xiaoming Li *, Liang Chen, Luyao Wang, Wenqun Xiu, Near Relation-Based Indoor Positioning Method Under Sparse Wi-Fi Fingerprints ISPRS International Journal of Geo-Information （Accepted）
4. Jun Yan, ...Liang Chen, Extremely Machine Learning, .IEEE Sensors Journal （Accepted）
5. Yu, Y;Chen, RZ*;Liu,ZY;Guo,GY;Ye, F;Chen,L.Wi-FiFine Time Measurement: Data Analysis and Processing for Indoor Localisation. The Journal of Navigation,2020.1-23. （Accepted）

1. Liang Chen, Heidi Kuusniemi, Yuwei Chen, Ling Pei, Jingbin Liu, Jian Tang, Laura Ruotsalainen, Ruizhi Chen. Information Filter Assisted Indoor Bluetooth Positioning, in Advancing Embedded Systems and Real-Time Communications with Emerging Technologies, Seppo Virtanen eds. IGI Global Press, 2014. DOI: 10.4018/978-1-4666-6034-2
2. Liang Chen, Simo-Ali-Löytty, Robert Piche, and Wu Lenan. Mobile tracking in mixed line-of-sight/non-line-of-sight conditions: algorithms and theoretical lower bound, in Position Location-Theory, Practice and Advances: A Handbook for Engineers and Academics, S. Zekavat and M. Buehrer, eds. Wiley-IEEE Press, Oct. 2011, ISBN: 978-0-470-94342-7.
3. Heidi Kuusniemi, Chen Yuwei and Liang Chen. Multi-sensor Multi-network Positioning, in Ubiquitous positioning and mobile location-based services in smart phones, Ruizhi Chen eds. IGI Global Press, June, 2012, ISBN: 978-146-661827-5.
4. Elena Simona Lohan, Anette Alén-Savikko, Liang Chen, Kimmo Järvinen, Helena Leppäkoski, Heidi Kuusniemi, Päivi Korpisaari. 5G positioning: security and privacy aspects, pp. 281-320, DOI: 10.1002/9781119293071.ch13 in A Comprehensive Guide to 5G Security, Madhusanka Liyanage, Ijaz Ahmad, Ahmed Bux Abro and Mika Ylianttila Eds. John Wiley & Sons. ISBN 9781119293040

陈亮，基于OFDM数字广播信号的无线定位关键技术研究，Golden Light Academic Publishing, 2016 , ISBN: 978-3-639-82525-1，ISBN: 978-3-639-82525-1

1. Lei Wang, Ruizhi Chen, Liang Chen, Lili Shen, Peng Zhang, Yuanjin Pan and Ming Li* A Robust Filter for TOA Based Indoor Localization in Mixed LOS/NLOS Environment. International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2018), March 22-23, Wuhan, China. DOI:10.1109/UPINLBS.2018.8559862.
2. Ming Li, Ruizhi Chen, Xuan Liao, Bingxuan Guo, Liang Chen, Jinbing Liu, Teng Wu, Lei Wang, Yuanjin Pan and Peng Zhang* A Real-time Indoor Visual Localization and Navigation Method Based on Tango Smartphone.
International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2018), March 22-23, DOI:10.1109/UPINLBS.2018.8559720. 3. Pei Yu, Xiaoyu Zhang, Liang Chen* and Ruizhi Chen. A comparative study on range-based localization algorithms under 5G communication system, in the Second LIESMARS International Graduate Workshop on Geo-Informatics, July 9-11, Wuhan, China (第二届地球空间信息科学博士生国际学术论坛优秀报告奖)
4. Laura Ruotsalainen, Robert Guinness, Simo Gröhn, Liang Chen, Martti Kirkko-Jaakkola and Heidi Kuusniemi. Situational Awareness for Tactical Applications. Proceedings of the 29th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2016), Portland, Oregon, September 2016, pp. 1190-1198.
5. Heidi Kuusniemi, Elina-Simona Lohan, Kimmo Järvinen, Paive Korpisaari, Sarang Thombre, Mohammad Zahidul Hasan Bhuiyan, Helen Leppäkoski, Liang Chen, Shakila Bu-Pasha, Anette Alen-Savikko, Jenna Mäkinen, Laura Ruotsalainen, Stefan Söderholm, Robert Guinness, Giorgia N. Ferrara and Salomon Honkala. Information Security Of Location Estimation – Increasing Trustworthiness. Proc. of the ESA Navitec 2016, Noordwijk, NL, Dec. 2016.
6. Jun Yan, Yongxiang He, Bingcheng Zhu and and Liang Chen, Mobile Device Orientation Estimation Using Visible Light Communication System, Proceedings of European Navigation Conference 2016 (ENC 2016), 30 May-2 June, Helsinki, Finland.
7. Laura Ruotsalainen, Martti Kirkko-Jaakkola, Liang Chen, Simo Gröhn, Robert Guinness, Heidi Kuusniemi, Multi-Sensor SLAM for Tactical Situational Awareness, Proceedings of International Technical Meeting - The Institute of Navigation (ION ITM 2016), January 28, 2016, California, United States, pp. 273-282.
8. Liang Chen, Heidi Kuusniemi, Yuwei Chen, Jingbin Liu, Pei Ling and Ruizhi Chen. Constraint Kalman Filter for Indoor Bluetooth Localization. Proceedings of European Signal Processing Conference (Eusipco 2015), Aug. 30- Sep. 4, 2015, Nice, France. ( EI:20161702298645)
9. Heidi Kuusniemi, Sarang Thombre, Stefan Söderholm, Liang Chen, Robert Guinness, Zbigniew Pietrzykowski and Piotr Wolejsza. Operational Scenarios for Maritime Safety in the Baltic Sea. Proceedings of the 28th International Technical Meeting of the ION Satellite Division (ION GNSS + 2015), Sept.14-18, 2015, Tampa, U.S. pp. 944 - 952 (EI:20162602541088, 获最佳论文陈述奖)
10. Laura Ruotsalainen, Simo Gröhn, Martti Kirkko-Jaakkola, Liang Chen, Robert Guinness, Heidi Kuusniemi. Monocular visual SLAM for tactical situational awareness, Proceedings of International Conference on Indoor Positioning and Indoor Navigation (IPIN 2015), Oct 13 -16, 2015, Banff, Canada. (EI: 20161002065365)
11. Olli Nevalainen, Thombre Sarang, Sanna Kaasalainen, Liang Chen, et al, Feasibility of Sentinel-1 data for Enhanced Maritime Safety and Situational Awareness, Proceedings of European Navigation Conference (ENC 2015), April 7 -10, 2015, Bordeaux, France (获最佳学生论文奖)
12. Jingbin Liu, Liang Chen, Ruizhi Chen. HMM-based Pedestrian Location and Motion Joint Estimation toward a Smartphone Geo-context Computing Solution. International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2014), Nov. 20-21, Corpus Christi, Texas, USA.
13. Ruizhi Chen, Tianxing Chu, Jingbin Liu, Yuwei Chen, Liang Chen and Juha Hyyppa : Development of a Contextual Thinking Engine in Mobile Devices. International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2014), Nov. 20-21, Corpus Christi, Texas, USA. ( EI:20151100634559)
14. Jian Tang, Yuwei Chen, Jingbin Liu, Liang Chen and Juha Hyyppa INS and Laser Scan Matching based UGV Indoor Positioning System. International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2014), Nov. 20-21, Corpus Christi, Texas, USA.
15. Yuwei Chen, Jian Tang, Juha Hyyppä, Markus Holopainen, Liang Chen, and Hannu Hyyppä. Automated Positioning Stem Location on Plot-wise Forest Inventory Using SLAM Technology International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2014), Nov. 20-21, Corpus Christi, Texas, USA.
16. Ruizhi Chen, Jingbin Liu, Yuwei Chen, Liang Chen. DGNSS-C: A Differential Solution for Enhancing Smartphone GNSS Performance. Proceedings of ION GNSS 2014, Sept. 8-12, 2014, Tampa, Florida, U.S. (EI: 20153401182820)
17. Yuwei Chen, Jian Tang, Jingbin Liu, Juha Hyyppa, Liang Chen, etc. Environmental Features Based Indoor Positioning Using LiDAR-aided Multiple Sensors System for UGVs. Proc. IEEE/ION Position Location and Navigation Symposium (PLANS 2014), May 5-8, 2014, California, U.S.A
18. Jingbin Liu, Yuwei Chen, Jian Tang, Liang Chen, Juha Hyyppa. The Use of Ambient Light for Ubiquitous Positioning. Proc of IEEE/ION Position Location and Navigation Symposium (PLANS 2014), May 5-8, 2014, California, U.S.A
19. Ling Pei, Liang Chen, Robert Guinness, Jingbin Liu, Heidi Kuusniemi, Yuwei Chen, Ruizhi Chen, Stefan Söderholm. Sound Positioning Using a Small-scale Liner Microphone Array. International Conference on Indoor Positioning and Indoor Navigation (IPIN 2013), Oct. 2-4 2013, Belfort-Mont bliard, France.
20. Liang Chen, Simona Lohan, Olivier Julier, Paul Thevenon and Christophe Macabiau. Delay Estimation for DVB-T Signals in Adverse Multipath Scenarios. Proc. of International Conference on Localization and GNSS (ICL-GNSS 2014), Jun. 24-26, Helsinki, Finland (EI:20144900284630)
21. Liang Chen, Lie-Liang Yang and Ruizhi Chen. Time Delay Tracking for Positioning in DTV Networks. Proceedings of the International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2012), Oct. 2-4, 2012, Helsinki, Finland. (EI:20130816045122)
22. Pei Ling, Jingbin Liu, Liang Chen, Robert Guinness and Ruizhi Chen. The Evaluation of WiFi Positioning in a Bluetooth and WiFi Coexistence Environment, Proceedings of the International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2012), Oct. 2-4, 2012, Helsinki, Finland. (EI:20130816045106)
23. Yuwei Chen, Jingbin Liu, Laura Ruotsalainen, Liang Chen, Tuomo Kroger, Heidi Kuusniemi, Ling Pei, Ruizhi Chen, Tomi Tenhunen and Yiwu Wang. Lane Detection based on a Visual-aided Multiple Sensors Platform. 2012 IEEE/ION Position Location and Navigation Symposium (PLANS 2012), April 23-26, 2012, Myrtle Beach, SC, USA (EI: 20123815451097)
24. Zahid M. Bhuiyan, Heidi Kuusniemi, Liang Chen, Laura Ruotsalainen, and Chen Ruizhi. Utilizing Building Layout for Performance Optimization of a Multi-Sensor Fusion Model in Indoor Navigation, Proceedings of International Conference on Localization and GNSS (ICL-GNSS 2012), June 25-27, 2012, Munich, Germany. ( EI:20124015486478)
25. Heidi Kuusniemi, Mohammad Zahidul H Bhuiyan, Marten Strom, Stefan Söderholm, Timo Jokitalo, Liang Chen, Ruizhi Chen. Utilizing pulsed pseudolites and high-sensitivity GNSS for ubiquitous outdoor/indoor satellite navigation. 2012 International Conference on Indoor Positioning and Indoor Navigation (IPIN 2012), 13-15 Nov. 2012, Queensland, Australia. pp. 1 – 7 (EI:20130916064329)
26. Liang Chen, Heidi Kuusniemi, Chen Yuwei, Pei Ling, Tuomo Kroger, and Chen Ruizhi. Information Filter with Speed Detection for Indoor Bluetooth Positioning, Proceedings of International Conference on Localization and GNSS (ICL-GNSS 2011), June 29-30, 2011, Tampere, Finland. (EI:20113514267327)
27. Heidi Kuusniemi, Liang Chen, Ruotsalainen Laura, Pei Ling, Chen Yuwei and Chen Ruizhi. Multi-sensor Multi-network Seamless Positioning with Visual Aiding, Proceedings of International Conference on Localization and GNSS (ICL-GNSS 2011), June 29-30, 2011, Tampere, Finland. (EI:20113514267326)
28. Heidi Kuusniemi, Liang Chen, Ling Pei, Jingbin Liu, Yuwei Chen, Laura Ruotsalainen, and Ruizhi Chen. Evaluation of Bayesian Approaches for Multi-sensor Multi-network Seamless Positioning. Proceedings of ION GNSS 2011, 20-23 September 2011. (EI: 20122215060908)
29. Hu Hongmei, Li Guoping, Liang Chen, et al. Enhanced SPARSE speech processing strategy for cochlear implants, Proceedings of the 19th European Signal Processing Conference (Eusipco 2011), Aug. 29- Sept. 2, 2011, Barcelona, Spain. (EI:20122915257748)
30. Liang Chen, Henri Pesonen and Robert Piche. Mobile tracking in Unknown Non-line-of-sight Conditions, Proceedings of the International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Service (UPINLBS 2010), Oct. 14-15 2010, Helsinki, Finland. (EI:20110313595492)
31. Liang Chen and Robert Piche. Mobile tracking and parameter learning in unknown non-line-of-sight conditions, Proceedings of 13th International Conference on Information Fusion (Fusion 2010), July 26-29, 2010, Edinburg, UK. (EI:20111113741122)
32. Liang Chen, Robert Piche, Lenan Wu. Posterior Cramer-Rao lower bound for mobile tracking in mixed LOS/NLOS conditions. Proceedings of European Signal Processing Conference (Eusipco 2009), Aug. 24-28 2009, Glasgow, Scotland. (EI:20122915256288)
33. Liang Chen and Wu Lenan. Mobile localization with NLOS mitigation using improved Rao-Blackwellized particle filtering algorithm, Proceedings of 13th IEEE International Symposium on Consumer Electronics (ISCE 2009), May 25-28, Kyoto, Japan. (EI:20094412410776)
34. Liang Chen, Zou Huanzhong and Wu Lenna. Modified particle filtering for wireless tracking in digital broadcasting system, Proceedings of IEEE 2008 International Conference on Wireless Communications, Networking and Mobile Computing (Wicom 2008), Oct. 12-17, 2008, Dalian, China. (EI: 20090111833317)
35. Liang Chen, Hu Hongmei and Wu Zhenyang. Head-related impulse response interpolation in virtual sound system, Proceedings of the 4th International Conference on natural computation (ICNC'08), Oct. 19-21, 2008, Jinan, China. (EI:20085211804055)
36. Ding Tao, Liang Chen, Lenan Wu. Mobile location estimator in mixed LOS/NLOS conditions using UKF banks. Proceedings of 5th International Conference on Wireless Communications, Networking and Mobile Computing (Wicom 2009) , Sept. 24-26, 2009, Beijing, China. (EI: 20100112610255)
37. Liang Chen, Jin Le and Wu Lenan. Service scheduling and network selection in cellular and broadcasting cooperative networks, Proceedings of IEEE 2007 International Conference on Wireless Communications, Networking and Mobile Computing (Wicom 2007), Sept. 21-25, 2007, Shanghai, China. (EI:20080311027360)
38. Jin Le, Liang Chen and Wu Lenan. A Channel Model Simulation for Positioning Using DTV SFN, Proceedings of 19th Computer Technology and Application, Hefei, 2008, China.
39. Liang Chen, Qi Cheng hao and Wu Lennan. Wireless ADSL based on T-DMB: a new mode for mobile multimedia communications, Proceedings of 1st Conference on Human Machine Harmonious Environment, Hangzhou, China, 2006
40. Zou Huanzhong, Liang Chen, He Feng and Wu Lenan. Joint mean matching NLOS mitigation method in TOA location, Proceedings of the 3rd International Conference on Communications and Networking in China (Chinacom 2008), Aug. 25-27, 2008, (EI: 20090111839483)
41. Hu Hongmei, Liang Chen and Zhen Yang Wu. The estimation of personalized HRTFs in individual VAS, Proceedings of the 4th International Conference on Natural Computation (ICNC'08), Oct. 19-21, 2008, Jinan, China. (EI:20085211804063)
42. Cheng Hanwen, Han Hua, Wu Lenan and Liang Chen. A 1-Dimension structure adaptive self-organizing neural network for QAM signal classification, Proceedings of 3rd International Conference on Natural Computation (ICNC 07), Aug. 24-27 2007, Haikou, China. (EI: 20080311026683)

2023年5月18日，我组内彭琰然和许静静两名硕士研究生参加了武汉大学 电子信息学院 硕士毕业答辩。两名同学在研究生期间主要从事冠层高度测量和气溶胶颗粒物监测的研究。其中，彭琰然同学的毕业论文题目为《一种基于静止卫星预测高时空分辨率PM1的集成学习算法研究》。
经过答辩委员会的讨论，答辩委员会一致通过决议，授予彭琰然和许静静两位同学硕士研究生专业学位。

本网讯（通讯员：周鑫）北京时间8月27日，“5G智能定位与空间认知前沿领域”咨询会议正式召开，来自全国多名相关领域专家在浙江德清共享知识盛宴。武汉大学测绘遥感信息工程国家重点实验室主任陈锐志教授致辞并宣布会议正式开始，测绘遥感信息工程国家重点实验室导航定位与位置服务研究室主任柳景斌教授主持。
会议伊始，各位与会专家进行自我介绍，并由柳景斌教授向各位与会专家介绍了近年来实验室UNSC团队取得的一些主要进展。
接下来，中国信息通信研究院泰尔系统实验室的孙思杨博士和中国联通智能城市研究院的杨衫博士对5G目前的部署和终端、基站情况进行了介绍。向与会专家介绍了目前商用5G基站的覆盖情况和布设场景。
随后由实验室UNSC团队的陈亮教授进行了基于商用5G信号智能终端的室内定位研究介绍，向与会专家分享了团队近期在利用5G信号进行室内定位方面取得的进展。陈亮教授的分享激发了各位与会专家针对5G室内定位的热烈讨论，并探讨了5G信号智能定位新体制与新方法。
实验室主任陈锐志教授随后提出“5G信号在定位与空间认知中应该扮演怎样的角色？”这一关键问题。陈锐志教授给出了三个发展方向：5G主导的定位、5G辅助的定位以及多源融合定位。并邀请各位与会专家对5G智能定位的发展方向进行了多层次、多方位的讨论。



经过三名学生的线上答辩以及答辩委员会的讨论，答辩委员会一致通过决议，授予马桢、刘钊良和周鑫三位同学硕士研究生专业学位。

2019年11月13日，由北京建筑大学和武汉大学测绘遥感信息工程国家重点实验室联合主办，IEEE、ISPRS、GLAC和ICAACI联合支持的第六届UPINLBS（The Sixth International Conference on Ubiquitous Positioning, Indoor Navigation and Location-Based Services）在北京建筑大学隆重召开，会议汇集来自学术界和工业界的研究人员和从业人员，讨论创新的本地化技术，新兴的基于位置的应用程序和服务。
大会主席、武汉大学测绘遥感信息工程国家重点实验室陈锐志教授致开幕词并主持会议开幕式。国际摄影测量与遥感协会（ISPRS）执行局代表李松年教授致辞，对会议的召开表示热烈祝贺。他指出，定位导航赛事与学术交流是ISPRS工作的重要组成部分；中国卫星导航定位协会张全德秘书长致辞，他对定位导航领域的发展现状进行全面总结并对未来前景进行深入展望。加拿大工程院Naser El-Sheimy院士作了题目为《Technologies for navigation everywhere for autonomous vehicles》的报告，详细介绍了无人驾驶导航领域最前沿的方法和技术，描述了INS在无人驾驶导航领域不可替代的地位，强调了该领域目前存在的问题和未来发展方向。大会主席陈锐志教授作了题为《Beyond GNSS: Sub-meter Indoor Positioning Using Smartphones》的报告，分析了室内定位的作用和Google、Apple、BaiDu等行业前沿公司目前最新的智能手机室内定位技术和方案，介绍了超声波、结构光、视觉、WiFi RTT、5G等各种智能手机亚米级室内定位方法与实验，展示了测绘遥感信息工程国家重点实验室的最新研究成果。

图1 陈亮教授主持分会

会议设有2个主论坛报告和16个分论坛，共计140余个报告。会议共收集论文33篇，论文摘要99篇。研讨内容围绕“精密定位导航理论与方法”、“无缝定位基准与协同定位技术”、“BDS/GNSS 智慧城市无缝定位”、“复杂环境下全球精密定位技术”、“机器人/无人驾驶定位技术”、“无缝传感技术的人类活动”、“应急定位与位置服务技术”等16个方向进行，涵盖智慧城市物联网、机器人/无人驾驶、室内室外/地上地下无缝定位及应急定位、多传感器融合等方面的理论研究和行业应用，集中反映了当前国际普适定位、室内导航和位置服务领域研究的最新进展和发展方向，展示了定位导航领域行业应用研究的广阔前景。我室陈亮教授作为会议技术主席和“基于多传感器的室内外无缝定位”分会的主席，出席本次会议。分会上，来自中科院光电研究院，武汉大学，中国地质大学（武汉），南京邮电大学以及北京建筑大学的师生做了报告，介绍各自团队的最新科研成果。

图2 参与分会人员合影（右三为陈亮教授）

正所谓“他山之石，可以攻玉”，这次会议为广大定位与位置服务科研人员提供了交流与认识的平台，了解前沿知识，收获满满。

焦振航博士的心得分享

这是我作为研究生参加的第四次会议，同时也是我作为报告人的第一次会议，所以我对这次会议非常重视。从准备摘要到接到参会通知，经历了两个月，但是我从台下到台上却走了一年多，我是博士阶段才开始接触室内定位，这也是我的第二个年头，从入门信号与处理，到入门多载波测距，作为一名测绘人，在导师的悉心指导下，经过一年多的摸爬滚打，基本实现了几种测距方法，先模仿再创新，从不断的文献阅读中我思考出一种新的方法，虽然实验结果时好时坏，但是我还是选择在会议上与大家分享，就像萧伯纳说的：“你有一个苹果，我有一个苹果，彼此交换一下，我们彼此仍然是各有一个苹果；但你有一种思想，我有一种思想，彼此交换，我们就都有了两种思想，甚至更多”。
本次会议上我已学到了很多，Naser院士介绍了IMU校正的一些新方法，以及行人航迹推算方向他们团队新的进展。更好的了解了陈锐志主任团队新的进展。与我的研究方向相关的WiFi，4G/5G信号定位等，我也收获颇丰，了解了大家目前的进展与困惑，认识了一些新的朋友。印象最深的还有一点，会上我听了一些留学人员的报告，来自澳大利亚，意大利等国家，他们的口语非常流利，而大部分国内科研人员用英语交流还是比较困难，所以今后我还要继续锻炼口语，变的更加国际化，全面发展。

图3 焦振航博士在分会上做报告

2020年12月17日，导航室2019级博士研究生中期考核工作在实验室四楼会议室展开，我组阮焱林、刘晓燕、程兵兵三位博士生参加答辩，陈锐志教授、陈亮教授、梁新廉教授分别从多个维度进行点评并给出了详细的指导意见。

博士期间的生活，亦快亦慢，快的是每天在沉浸式地为了一个个科研目标进行努力，日复一日的科研生活加快了时光的流逝。慢的是在经历了科研外的种种挫折以后，在实验室老师的关怀下，开始正视自己，沉淀自己，希望自己的内心可以逐步变得丰盈而强大，从容面对各种困难。



博三刚开学期间，我开始通过微信公众号了解各个高校对教职人员的招聘信息，并制作简历对自己感兴趣的岗位进行投递。与此同时，我也向相关领域的欧洲和美国的实验室进行申请。



由于自己的研究方向非常符合法国LSCE的EYE-CLIMA项目需求，最终通过3轮面试，得到了该实验室发出的博后的offer。后续也陆续收到国内一些高校的教职（讲师/副教授）offer，经过冷静思考，我觉得自己的科研能力始终缺少发现现象、解释现象这一环。因此，经过慎重考虑我选择在LSCE继续历练自己，以期自己的科研工作形成体系，也可以提高自己的抗压能力。将来希望能够以更好的状态回馈母校，投身于祖国的双碳事业。【转自 测绘遥感国家重点实验室】