SNORTEX (Snow Reflectance Transition Experiment): Remote Sensing Measurement of the Dynamic Properties of the Boreal Snow-forest in Support to Climate and Weather Forecast: Report of IOP-2008. - Jean-Louis Roujean; Terhikki Manninen; Anna Kontu; Jouni Peltoniemi; Olivier Hautecoeur; Aku Riihelä; Panu Lahtinen; Niilo Siljamo; Hanne Suokanerva; Timo Sukuvaara; Sanna Kaasalainen; Osmo Aulamo; et al. (IGARSS (2), 2009)

Polarised Multiangular Reflectance Measurements Using the Finnish Geodetic Institute Field Goniospectrometer. - Juha Suomalainen; Teemu Hakala; Jouni Peltoniemi; Eetu Puttonen (Sensors, 2009)

Measurement of Reflectance Properties of Asphalt Surfaces and Their Usability as Reference Targets for Aerial Photos. - Eetu Puttonen; Juha Suomalainen; Teemu Hakala; Jouni Peltoniemi (IEEE Trans. Geosci. Remote. Sens., 2009)

Active hyperspectral LIDAR methods for object classification. - Sanna Kaasalainen; Juha Suomalainen; Teemu Hakala; Yuwei Chen; Esa Räikkönen; Eetu Puttonen; Harri Kaartinen (WHISPERS, 2010)

Acquisition of Bidirectional Reflectance Factor Dataset Using a Micro Unmanned Aerial Vehicle and a Consumer Camera. - Teemu Hakala; Juha Suomalainen; Jouni I. Peltoniemi (Remote. Sens., 2010)

Analysis of Properties of Reflectance Reference Targets for Permanent Radiometric Test Sites of High Resolution Airborne Imaging Systems. - Eija Honkavaara; Teemu Hakala; Jouni Peltoniemi; Juha Suomalainen; Eero Ahokas; Lauri Markelin (Remote. Sens., 2010)

Land Surface Albedos Computed from BRF Measurements with a Study of Conversion Formulae. - Jouni I. Peltoniemi; Terhikki Manninen; Juha Suomalainen; Teemu Hakala; Eetu Puttonen; Aku Riihelä (Remote. Sens., 2010)

Two-channel Hyperspectral LiDAR with a Supercontinuum Laser Source. - Yuwei Chen; Esa Räikkönen; Sanna Kaasalainen; Juha Suomalainen; Teemu Hakala; Juha Hyyppä; Ruizhi Chen (Sensors, 2010)

Classification of Spruce and Pine Trees Using Active Hyperspectral LiDAR. - Jari Vauhkonen; Teemu Hakala; Juha Suomalainen; Sanna Kaasalainen; Olli Nevalainen; Mikko Vastaranta; Markus Holopainen; Juha Hyyppä (IEEE Geosci. Remote. Sens. Lett., 2013)

Processing and Assessment of Spectrometric, Stereoscopic Imagery Collected Using a Lightweight UAV Spectral Camera for Precision Agriculture. - Eija Honkavaara; Heikki Saari; Jere Kaivosoja; Ilkka Pölönen; Teemu Hakala; Paula Litkey; Jussi Mäkynen; Liisa Pesonen (Remote. Sens., 2013)

Investigating Bi-Temporal Hyperspectral Lidar Measurements from Declined Trees - Experiences from Laboratory Test. - Samuli Junttila; Sanna Kaasalainen; Mikko Vastaranta; Teemu Hakala; Olli Nevalainen; Markus Holopainen (Remote. Sens., 2015)

Using UAV-Based Photogrammetry and Hyperspectral Imaging for Mapping Bark Beetle Damage at Tree-Level. - Roope Näsi; Eija Honkavaara; Päivi Lyytikäinen-Saarenmaa; Minna Blomqvist; Paula Litkey; Teemu Hakala; Niko Viljanen; Tuula Kantola; Topi Tanhuanpää; Markus Holopainen (Remote. Sens., 2015)

Range calibration of airborne profiling radar used in forest inventory. - Ziyi Feng; Yuwei Chen; Teemu Hakala; Juha Hyyppä (IGARSS, 2016)

CoAP over ICN. - Nikos Fotiou; Hasan M. A. Islam; Dmitrij Lagutin; Teemu Hakala; George C. Polyzos (NTMS, 2016)

Scan matching technology for forest navigation with map information. - Yuwei Chen; Jian Tang 004; Ehsan Khoramshahi; Teemu Hakala; Harri Kaartinen; Anttoni Jaakkola; Juha Hyyppä; Zhen Zhu; Ruizhi Chen (PLANS, 2016)

Remote Sensing of 3-D Geometry and Surface Moisture of a Peat Production Area Using Hyperspectral Frame Cameras in Visible to Short-Wave Infrared Spectral Ranges Onboard a Small Unmanned Airborne Vehicle (UAV). - Eija Honkavaara; Matti A. Eskelinen; Ilkka Pölönen; Heikki Saari; Harri Ojanen; Rami Mannila; Christer Holmlund; Teemu Hakala; Paula Litkey; Tomi Rosnell; Niko Viljanen; Merja Pulkkanen (IEEE Trans. Geosci. Remote. Sens., 2016)

ICN enabling CoAP extensions for IP based IoT devices. - Nikos Fotiou; George Xylomenos; George C. Polyzos; Hasan M. A. Islam; Dmitrij Lagutin; Teemu Hakala; Eero Hakala (ICN, 2017)

Applying Different Remote Sensing Data to Determine Relative Biomass Estimations of Cereals for Precision Fertilization Task Generation. - Jere Kaivosoja; Roope Näsi; Teemu Hakala; Niko Viljanen; Eija Honkavaara (HAICTA, 2017)

Different Remote Sensing Data in Relative Biomass Determination and in Precision Fertilization Task Generation for Cereal Crops. - Jere Kaivosoja; Roope Näsi; Teemu Hakala; Niko Viljanen; Eija Honkavaara (HAICTA (Revised Selected Papers), 2017)

UAV-Borne Profiling Radar for Forest Research. - Yuwei Chen; Teemu Hakala; Mika Karjalainen; Ziyi Feng; Jian Tang 004; Paula Litkey; Antero Kukko; Anttoni Jaakkola; Juha Hyyppä (Remote. Sens., 2017)

Individual Tree Detection and Classification with UAV-Based Photogrammetric Point Clouds and Hyperspectral Imaging. - Olli Nevalainen; Eija Honkavaara; Sakari Tuominen; Niko Viljanen; Teemu Hakala; Xiaowei Yu; Juha Hyyppä; Heikki Saari; Ilkka Pölönen; Nilton Nobuhiro Imai; Antonio M. G. Tommaselli (Remote. Sens., 2017)

An Analysis of Ku-Band Profiling Radar Observations of Boreal Forest. - Livia Piermattei; Markus Hollaus; Milutin Milenkovic; Norbert Pfeifer; Raphael Quast; Yuwei Chen; Teemu Hakala; Mika Karjalainen; Juha Hyyppä; Wolfgang Wagner 001 (Remote. Sens., 2017)

Drone Measurements of Solar-Induced Chlorophyll Fluorescence Acquired with a Low-Weight DFOV Spectrometer System. - Jon Atherton; Alasdair MacArthur; Teemu Hakala; Kadmiel Maseyk; Iain Robinson; Weiwei Liu; Eija Honkavaara; Albert Porcar-Castell (IGARSS, 2018)

Fully Polarimetric Airborne Wind Vector Scatterometer to Support Space-Borne Gnss-R Measurements. - Juha Kainulainen; Sampo Salo; Janne Lahtinen; Guifré Molera Calvés; Jaakko Seppänen; Jaan Praks; Teemu Hakala; Yuwei Chen; Juha Hyyppä; Martin Unwin; Philip Jales; Gerhard Ressler; et al. (IGARSS, 2018)

Tree Species Identification Using 3D Spectral Data and 3D Convolutional Neural Network. - Ilkka Pölönen; Leevi Annala; Samuli Rahkonen; Olli Nevalainen; Eija Honkavaara; Sakari Tuominen; Niko Viljanen; Teemu Hakala (WHISPERS, 2018)

Estimating Biomass and Nitrogen Amount of Barley and Grass Using UAV and Aircraft Based Spectral and Photogrammetric 3D Features. - Roope Näsi; Niko Viljanen; Jere Kaivosoja; Katja Alhonoja; Teemu Hakala; Lauri Markelin; Eija Honkavaara (Remote. Sens., 2018)

Assessing Biodiversity in Boreal Forests with UAV-Based Photogrammetric Point Clouds and Hyperspectral Imaging. - Ninni Saarinen; Mikko Vastaranta; Roope Näsi; Tomi Rosnell; Teemu Hakala; Eija Honkavaara; Michael A. Wulder; Ville Luoma; Antonio M. G. Tommaselli; Nilton Nobuhiro Imai; Eduardo A. W. Ribeiro; Raul B. Guimarães; et al. (Remote. Sens., 2018)

A Novel Tilt Correction Technique for Irradiance Sensors and Spectrometers On-Board Unmanned Aerial Vehicles. - Juha Suomalainen; Teemu Hakala; Raquel Alves de Oliveira; Lauri Markelin; Niko Viljanen; Roope Näsi; Eija Honkavaara (Remote. Sens., 2018)

Assessment of Classifiers and Remote Sensing Features of Hyperspectral Imagery and Stereo-Photogrammetric Point Clouds for Recognition of Tree Species in a Forest Area of High Species Diversity. - Sakari Tuominen; Roope Näsi; Eija Honkavaara; Andras Balazs; Teemu Hakala; Niko Viljanen; Ilkka Pölönen; Heikki Saari; Harri Ojanen (Remote. Sens., 2018)

The Comparison of Canopy Height Profiles Extracted from Ku-band Profile Radar Waveforms and LiDAR Data. - Hui Zhou; Yuwei Chen; Ziyi Feng; Fashuai Li; Juha Hyyppä; Teemu Hakala; Mika Karjalainen; Changhui Jiang; Ling Pei (Remote. Sens., 2018)

A Backpack-Mounted Omnidirectional Camera with Off-the-Shelf Navigation Sensors for Mobile Terrestrial Mapping: Development and Forest Application. - Mariana Batista Campos; Antonio M. G. Tommaselli; Eija Honkavaara; Fabricio dos Santos Prol; Harri Kaartinen; Aimad El Issaoui; Teemu Hakala (Sensors, 2018)

Direct Reflectance Measurements from Drones: Sensor Absolute Radiometric Calibration and System Tests for Forest Reflectance Characterization. - Teemu Hakala; Lauri Markelin; Eija Honkavaara; Barry Scott; Theo Theocharous; Olli Nevalainen; Roope Näsi; Juha Suomalainen; Niko Viljanen; Claire Greenwell; Nigel Fox (Sensors, 2018)

Estimation of Canopy Height Using an Airborne Ku-Band Frequency-Modulated Continuous Waveform Profiling Radar. - Hui Zhou; Yuwei Chen; Juha Hyyppä; Ziyi Feng; Fashuai Li; Teemu Hakala; Xinmin Xu; Xiaolei Zhu (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2018)

Estimating Ground Level and Canopy Top Elevation With Airborne Microwave Profiling Radar. - Ziyi Feng; Yuwei Chen; Juha Hyyppä; Teemu Hakala; Hui Zhou; Yunsheng Wang; Mika Karjalainen (IEEE Trans. Geosci. Remote. Sens., 2018)

Airborne Wind Vector Scatterometer for Sea Surface Measurements. - Juha Kainulainen; Sampo Salo; Janne Lahtinen; Guifré Molera Calvés; Jaakko Seppänen; Jaan Praks; Teemu Hakala; Yuwei Chen; Juha Hyyppä; Martin Unwin; Philip Jales; Gerhard Ressler; et al. (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2019)

On the Estimation of the Leaf Angle Distribution from Drone Based Photogrammetry. - Shan Xu 003; Martha Arbayani Zaidan; Eija Honkavaara; Teemu Hakala; Niko Viljanen; Albert Porcar-Castell; Zhigang Liu 012; Jon Atherton (IGARSS, 2020)

Lidar-aided analysis of boreal forest backscatter at Ku band. - Yuwei Chen; Ziyi Feng; Fashuai Li; Hui Zhou; Teemu Hakala; Mika Karjalainen; Juha Hyyppä (Int. J. Appl. Earth Obs. Geoinformation, 2020)

Erratum: Du, K., et al. Simulation of Ku-Band Profile Radar Waveform by Extending Radiosity Applicable to Porous Individual Objects (RAPID2) Model. Remote Sensing 2020, 12, 684. - Kai Du; Huaguo Huang; Yuyi Zhu; Ziyi Feng; Teemu Hakala; Yuwei Chen; Juha Hyyppä (Remote. Sens., 2020)

Comparison of Backpack, Handheld, Under-Canopy UAV, and Above-Canopy UAV Laser Scanning for Field Reference Data Collection in Boreal Forests. - Eric Hyyppä; Xiaowei Yu; Harri Kaartinen; Teemu Hakala; Antero Kukko; Mikko Vastaranta; Juha Hyyppä (Remote. Sens., 2020)

The Determination of Effective Beamwidth of Ku Band Profiling Radar Based on Waveform Matching Method in the Boreal Forest of Finland. - Hui Zhou; Yuwei Chen; Nan Hu; Yuandan Dong; Xinmin Xu; Ziyi Feng; Teemu Hakala; Juha Hyyppä (Remote. Sens., 2020)

Using Microwave Profile Radar to Estimate Forest Canopy Leaf Area Index: Linking 3D Radiative Transfer Model and Forest Gap Model. - Kai Du; Huaguo Huang; Ziyi Feng; Teemu Hakala; Yuwei Chen; Juha Hyyppä (Remote. Sens., 2021)

The Penetration Analysis of Airborne Ku-Band Radar Versus Satellite Infrared Lidar Based on the Height and Energy Percentiles in the Boreal Forest. - Hui Zhou; Yuwei Chen; Teemu Hakala; Ziyi Feng; Changhui Jiang; Jianxin Jia; Haibin Sun; Juha Hyyppä (Remote. Sens., 2021)

Feasibility of Hyperspectral Single Photon Lidar for Robust Autonomous Vehicle Perception. - Josef Taher; Teemu Hakala; Anttoni Jaakkola; Heikki Hyyti; Antero Kukko; Petri Manninen; Jyri Maanpää; Juha Hyyppä (Sensors, 2022)

Estimating Tree Health Decline Caused by Ips typographus L. from UAS RGB Images Using a Deep One-Stage Object Detection Neural Network. - Heini Kanerva; Eija Honkavaara; Roope Näsi; Teemu Hakala; Samuli Junttila; Kirsi Karila; Niko Koivumäki; Raquel Alves Oliveira; Mikko Pelto-Arvo; Ilkka Pölönen; Johanna Tuviala; Madeleine Östersund; et al. (Remote. Sens., 2022)

Investigating Foliar Macro- and Micronutrient Variation with Chlorophyll Fluorescence and Reflectance Measurements at the Leaf and Canopy Scales in Potato. - Jaakko Oivukkamäki; Jon Atherton; Shan Xu 003; Anu Riikonen; Chao Zhang 006; Teemu Hakala; Eija Honkavaara; Albert Porcar-Castell (Remote. Sens., 2023)

Evaluating Factors Impacting Fallen Tree Detection from Airborne Laser Scanning Point Clouds. - Einari Heinaro; Topi Tanhuanpää; Mikko Vastaranta; Tuomas Yrttimaa; Antero Kukko; Teemu Hakala; Teppo Mattsson; Markus Holopainen (Remote. Sens., 2023)

Comparison of Deep Neural Networks in the Classification of Bark Beetle-Induced Spruce Damage Using UAS Images. - Emma Turkulainen; Eija Honkavaara; Roope Näsi; Raquel Alves Oliveira; Teemu Hakala; Samuli Junttila; Kirsi Karila; Niko Koivumäki; Mikko Pelto-Arvo; Johanna Tuviala; Madeleine Östersund; Ilkka Pölönen; et al. (Remote. Sens., 2023)

Feasibility of using Ku-band helicopter-borne microwave radar for stem volume and biomass estimation in boreal forest. - Ziyi Feng; Xiaowei Yu; Yuwei Chen; Eetu Puttonen; Teemu Hakala; Changhui Jiang; Juha Hyyppä (Int. J. Appl. Earth Obs. Geoinformation, 2024)

Unsupervised semantic segmentation of urban high-density multispectral point clouds. - Oona Oinonen; Lassi Ruoppa; Josef Taher; Matti Lehtomäki; Leena Matikainen; Kirsi Karila; Teemu Hakala; Antero Kukko; Harri Kaartinen; Juha Hyyppä (CoRR, 2024)

Data-Driven Antenna Delay Calibration for UWB Devices for Network Positioning. - Zuoya Liu; Teemu Hakala; Juha Hyyppä; Antero Kukko; Harri Kaartinen; Ruizhi Chen (IEEE Trans. Instrum. Meas., 2024)

Performance Analysis of Standalone UWB Positioning Inside Forest Canopy. - Zuoya Liu; Harri Kaartinen; Teemu Hakala; Juha Hyyppä; Antero Kukko; Ruizhi Chen (IEEE Trans. Instrum. Meas., 2024)

Benchmarking Under- and Above-Canopy Laser Scanning Solutions for Deriving Stem Curve and Volume in Easy and Difficult Boreal Forest Conditions. - Jesse Muhojoki; Daniella Tavi; Eric Hyyppä; Matti Lehtomäki; Tamás Faitli; Harri Kaartinen; Antero Kukko; Teemu Hakala; Juha Hyyppä (Remote. Sens., 2024)

Integration of a Mobile Laser Scanning System with a Forest Harvester for Accurate Localization and Tree Stem Measurements. - Tamás Faitli; Eric Hyyppä; Heikki Hyyti; Teemu Hakala; Harri Kaartinen; Antero Kukko; Jesse Muhojoki; Juha Hyyppä (Remote. Sens., 2024)

Detecting Wildfires on UAVs with Real-Time Segmentation Trained by Larger Teacher Models. - Julius Pesonen; Teemu Hakala; Väinö Karjalainen; Niko Koivumäki; Lauri Markelin; Anna-Maria Raita-Hakola; Juha Suomalainen; Ilkka Pölönen; Eija Honkavaara (WACV, 2025)

Tracking foresters and mapping tree stem locations with decimeter-level accuracy under forest canopies using UWB. - Zuoya Liu; Harri Kaartinen; Teemu Hakala; Juha Hyyppä; Antero Kukko; Ruizhi Chen (Expert Syst. Appl., 2025)

Ultra-Wideband-Based Method for Measuring Tree Positions With Decimeter-Level Accuracy Under a Forest Canopy. - Zuoya Liu; Harri Kaartinen; Teemu Hakala; Heikki Hyyti; Juha Hyyppä; Antero Kukko; Ruizhi Chen; Mikko Vastaranta (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2025)

Towards autonomous photogrammetric forest inventory using a lightweight under-canopy robotic drone. - Väinö Karjalainen; Niko Koivumäki; Teemu Hakala; Jesse Muhojoki; Eric Hyyppä; Anand George; Juha Suomalainen; Eija Honkavaara (CoRR, 2025)