Filippo Biondi
| Filippo Biondi | |
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| Born | 1974 (age 51–52) L'Aquila, Italy |
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| 🌐 Website | www |
Filippo Biondi (born 1974) is an Italian telecommunication engineer, signal processing researcher, and specialist in Synthetic Aperture Radar (SAR) technologies. He is known for developing Doppler tomography techniques applied to satellite SAR data for high-resolution subsurface and internal structure analysis, with applications in environmental monitoring, structural health assessment, maritime surveillance, and archaeological investigations.[1][2] As of 2026, Biondi has an h-index of 18, an i10-index of 31, and over 1020 total citations (774 since 2021).[1]
Biondi gained international attention in January 2026 following his appearance on The Joe Rogan Experience (episode #2443), where he discussed radar discoveries of apparent underground structures beneath the Giza pyramid complex.[3][4] He is a key contributor to the Khafre Research Project, using multi-satellite SAR for non-invasive archaeological and geophysical studies.[5]
Early life and education
Biondi was born in 1974 in L'Aquila, Italy.[6][7]
As a child, he developed an interest in the pyramids, recalling playing on a personal computer and viewing images of them.[4]
He earned a bachelor's degree in telecommunication engineering from the University of Lecce (now part of the University of Salento) in southern Italy.[4]
He completed his PhD at La Sapienza in Rome.[4][8]
Career
Biondi has worked extensively on radar and synthetic aperture radar systems, including for the Italian military, where he handled some classified projects.[4]
He collaborated with the Italian Research Council (CNR) in Bari on advanced radar processing techniques.[4]
He is affiliated with the Centro Per il Telerilevamento and founded HarmonicSAR.com, a platform for harmonic SAR analysis applied to Earth monitoring, volcanology, infrastructure, and geophysical imaging.[2][8]
His innovations include methods for micro-motion/vibration detection, tomographic reconstruction, low-rank plus sparse decomposition, polarimetric SAR target detection, and underground/undersea imaging via SAR vibrometry.[1][9]
Research
Biondi's research focuses on advanced SAR signal processing techniques, including interferometry, tomography, micro-motion analysis, polarimetric methods, and sparse decomposition, with over 30 publications applied to infrastructure monitoring, maritime surveillance, environmental assessment, and unconventional subsurface imaging.[1]
He began with SAR image enhancement, developing super-resolution methods based on spectrum extrapolation to recover partially corrupted SAR images.[10]
A significant portion of his work involves SAR interferometry (InSAR) for geodetic and structural monitoring. He contributed to multi-sensor analysis of the Mosul Dam in Iraq, detecting ongoing destabilization through spaceborne SAR interferometry.[11][12] He further refined atmospheric phase screen estimation in differential InSAR using multichromatic analysis.[13]
Biondi extensively developed low-rank plus sparse decomposition for target detection in SAR imagery, initially for ship wake detection in maritime surveillance.[14] He extended this to polarimetric SAR data, improving detection accuracy in complex environments.[15] Related work includes eigenvalue classification of polarimetric covariance matrices for environmental applications.[16]
Micro-motion and vibration estimation represent a core theme, with pixel-tracking techniques on COSMO-SkyMed data used to assess maritime target inclinations and vibrations.[17] He applied similar methods to structural health monitoring of bridges and dams, including perspectives on SAR-based bridge monitoring.[18]
In radar detection, Biondi investigated adaptive strategies using Kullback-Leibler divergence for multi-hypothesis scenarios and deep learning approaches like temporal convolutional networks for micro-Doppler-based gait recognition.[19][20]
Biondi extended tomographic Doppler imaging to novel domains, such as echography-style scanning inside volcanoes for internal structure visualization using SAR data.[21]
His most prominent and controversial application is SAR Doppler tomography for archaeological remote sensing. In collaboration with Corrado Malanga, he processed multi-temporal satellite SAR phase data from ambient micro-movements to produce high-resolution tomographic reconstructions of internal structures in the Great Pyramid of Giza.[22] This method claims to reveal previously undiscovered features through non-invasive vibrometry and tomographic processing.[22]
Biondi has also filed patents for SAR-based underground and undersea imaging techniques.[9]
Khafre Research Project and Giza findings
Since 2018–2019, Biondi has collaborated with Corrado Malanga and Armando Mei on applying satellite SAR Doppler tomography to the Giza Plateau.[4][5]
Initial 2019 scans verified known pyramid interiors; by 2020–2025, expanded claims included vast underground shafts, voids, and complexes under Khafre, presented at a Bologna press briefing.[23][4]
The team used COSMO-SkyMed, Umbra, Capella Space, and others for cross-verification.[22]
Biondi views pyramids as potentially mechanical/vibrational devices rather than tombs.[4]
Public reception and controversy
The January 2026 Joe Rogan interview (#2443) amplified visibility.[3][4]
Media covered the "underground city" claims.[5][23]
Mainstream experts reject deep penetration claims in dense rock, citing methodological flaws and lack of ground-truthing.[24]
References
- ↑ 1.0 1.1 1.2 1.3 "Filippo Biondi, PhD". Google Scholar. Retrieved 26 January 2026.
- ↑ 2.0 2.1 "HarmonicSAR – Harmonic analysis of Synthetic Aperture Radar (SAR) data". Retrieved 26 January 2026.
- ↑ 3.0 3.1 Joe Rogan Experience #2443 - Filippo Biondi (YouTube video). PowerfulJRE. 23 January 2026. Retrieved 26 January 2026.
- ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 "Joe Rogan Podcast: #2443 with Filippo Biondi (Transcript)". The Singju Post. Retrieved 26 January 2026.
- ↑ 5.0 5.1 5.2 "Going underground: Experts clash over 'hidden city' beneath Egypt pyramids". Euronews. 26 March 2025. Retrieved 26 January 2026.
- ↑ Biondi, F; Addabbo, P; Clemente, C; Orlando, D (2020). "Measurements of Surface River Doppler Velocities With Along-Track InSAR Using a Single Antenna". IEEE Geoscience and Remote Sensing Letters. 17 (12): 2095–2099. doi:10.1109/LGRS.2020.2969199 (inactive 26 January 2026). Retrieved 26 January 2026.
- ↑ Addabbo, P; Biondi, F; others (2023). "Super-Resolution of Synthetic Aperture Radar Complex Data by Deep-Learning". IEEE Aerospace and Electronic Systems Magazine: 284–295. doi:10.1109/MAES.2023.3257390 (inactive 26 January 2026). Retrieved 26 January 2026.
- ↑ 8.0 8.1 "Filippo Biondi, Ph.D." LinkedIn. Retrieved 26 January 2026.
- ↑ 9.0 9.1 WO 2024008365A1, Biondi, Filippo, "Synthetic aperture radar underground, undersea", published 2024
- ↑ Biondi, F (2017). "Recovery of Partially Corrupted SAR Images by Super-Resolution Based on Spectrum Extrapolation". IEEE Geoscience and Remote Sensing Letters. 14 (2): 139–143. Bibcode:2017IGRSL..14..139B. doi:10.1109/LGRS.2016.2615564.
- ↑ Milillo, P; Bürgmann, R; Lundgren, P; Salzer, J; Perissin, D; Fielding, E; Biondi, F; Milillo, G (2016). "Space geodetic monitoring of engineered structures: The ongoing destabilization of the Mosul dam, Iraq". Scientific Reports. 6. Bibcode:2016NatSR...637408M. doi:10.1038/srep37408. PMC 5138637. PMID 27922128. Unknown parameter
|article-number=ignored (help) - ↑ Biondi, F; Addabbo, P; Clemente, C; Ullo, SL; Orlando, D (2020). "Monitoring of critical infrastructures by micromotion estimation: The Mosul dam destabilization". IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 13: 6337–6351. arXiv:2007.05326. Bibcode:2020IJSTA..13.6337B. doi:10.1109/JSTARS.2020.3030977.
- ↑ Biondi, F; Clemente, C; Orlando, D (2019). "An Atmospheric Phase Screen Estimation Strategy Based on Multichromatic Analysis for Differential Interferometric Synthetic Aperture Radar". IEEE Transactions on Geoscience and Remote Sensing. 57 (9): 7269–7280. Bibcode:2019ITGRS..57.7269B. doi:10.1109/TGRS.2019.2912778.
- ↑ Biondi, F (2017). "Low-Rank Plus Sparse Decomposition and Localized Radon Transform for Ship-Wake Detection in Synthetic Aperture Radar Images". IEEE Geoscience and Remote Sensing Letters. 14 (1): 117–121. doi:10.1109/LGRS.2016.2630742 (inactive 26 January 2026). Retrieved 26 January 2026.
- ↑ Biondi, F (2018). "A Polarimetric Extension of Low-Rank Plus Sparse Decomposition and Radon Transform for Ship Wake Detection in Synthetic Aperture Radar Images". IEEE Geoscience and Remote Sensing Letters. 15 (12): 1867–1871. doi:10.1109/LGRS.2018.2865193 (inactive 26 January 2026). Retrieved 26 January 2026.
- ↑ Addabbo, P; Biondi, F; Clemente, C; Orlando, D; Pallotta, L (2019). "Classification of Covariance Matrix Eigenvalues in Polarimetric SAR for Environmental Monitoring Applications". IEEE Aerospace and Electronic Systems Magazine. 34 (6): 28–43. doi:10.1109/MAES.2019.2908549 (inactive 26 January 2026). Retrieved 26 January 2026.
- ↑ Biondi, F; Addabbo, P; Orlando, D; Clemente, C (2019). "Micro-Motion Estimation of Maritime Targets Using Pixel Tracking in COSMO-SkyMed Synthetic Aperture Radar Data—An Operative Assessment". Remote Sensing. 11 (14): 1637. Bibcode:2019RemS...11.1637B. doi:10.3390/rs11141637.
- ↑ Biondi, F; Addabbo, P; Ullo, SL; Clemente, C; Orlando, D (2020). "Perspectives on the Structural Health Monitoring of Bridges by Synthetic Aperture Radar". Remote Sensing. 12 (23): 3852. Bibcode:2020RemS...12.3852B. doi:10.3390/rs12233852.
- ↑ Addabbo, P; Han, S; Biondi, F; Giunta, G; Orlando, D (2021). "Adaptive Radar Detection in the Presence of Multiple Alternative Hypotheses Using Kullback-Leibler Information Criterion-Part I: Detector Designs". IEEE Transactions on Signal Processing. 69: 3730–3741. doi:10.1109/TSP.2021.3089289 (inactive 26 January 2026). Retrieved 26 January 2026.
- ↑ Addabbo, P; Bernardi, ML; Biondi, F; Cimitile, M; Clemente, C; Orlando, D (2021). "Temporal Convolutional Neural Networks for Radar Micro-Doppler Based Gait Recognition". Sensors. 21 (1): 254. doi:10.3390/s21010254. PMC 7795752 Check
|pmc=value (help). PMID 33401741 Check|pmid=value (help). - ↑ Biondi, F (2022). "Scanning Inside Volcanoes with Synthetic Aperture Radar Echography Tomographic Doppler Imaging". Remote Sensing. 14 (15): 3828. Bibcode:2022RemS...14.3828B. doi:10.3390/rs14153828.
- ↑ 22.0 22.1 22.2 Biondi, Filippo; Malanga, Corrado (2022). "Synthetic Aperture Radar Doppler Tomography Reveals Details of Undiscovered High-Resolution Internal Structure of the Great Pyramid of Giza". Remote Sensing. 14 (20): 5231. arXiv:2208.00811. Bibcode:2022RemS...14.5231B. doi:10.3390/rs14205231.
- ↑ 23.0 23.1 "Researchers say they used SAR to find vast city beneath the pyramids". The Jerusalem Post. 30 March 2025. Retrieved 26 January 2026.
- ↑ "Unraveling the Pyramid Mystery: Claims of an Underground City Debunked". Egyptian Streets. 26 March 2025. Retrieved 26 January 2026.
External links
Category:1974 births
Category:Living people
Category:Italian engineers
Category:Telecommunication engineers
Category:Synthetic aperture radar
Category:Remote sensing researchers
Category:People from L'Aquila
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