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Digital Beamforming Based RFI Mitigation for Synthetic Aperture Radar

Tobias Bollian, Batuhan Osmanoglu, Rafael F. Rincon, SeungKuk Lee, Temilola Fatoyinbo
2018 IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium  
+ SAR signal preserved -Depends on model and RFI + No distortions + SAR signal preserved -Depends on filter parameters and on SAR-RFI-Ratio Can we use Digital Beamforming to suppress RFI?  ...  Digital Beamforming Limitations and assumptions How can we automatically notch RFI? How many RFI sources can we notch for given N? How well can we notch RFI inside the swath?  ... 
doi:10.1109/igarss.2018.8519095 dblp:conf/igarss/BollianORLF18 fatcat:atgyvl7ervhb5bczg54w5az7q4

Adaptive Antenna Pattern Notching of Interference in Synthetic Aperture Radar Data Using Digital Beamforming

Tobias Bollian, Batuhan Osmanoglu, Rafael Rincon, Seung-Kuk Lee, Temilola Fatoyinbo
2019 Remote Sensing  
Radio Frequency Interference (RFI) is a growing problem in Synthetic Aperture Radar (SAR) systems as scientific motivations push the radars to lower frequencies and as more wireless services share the  ...  In this paper, we present several methods to achieve this notching by making use of the spatial SAR signal distribution in range time, range frequency, azimuth time and azimuth Doppler that is inherent  ...  Parameters used for the simulation of the Synthetic Aperture Radar (SAR) and Radio Frequency Interference (RFI) data.  ... 
doi:10.3390/rs11111346 fatcat:dvo2ijupi5asdh4vu6wva746ye

Mitigation of Radio Frequency Interference in Synthetic Aperture Radar Data: Current Status and Future Trends

Mingliang Tao, Jia Su, Yan Huang, Ling Wang
2019 Remote Sensing  
Radio frequency interference (RFI) is a major issue in accurate remote sensing by a synthetic aperture radar (SAR) system, which poses a great hindrance to raw data collection, image formation, and subsequent  ...  This paper provides a comprehensive study of the RFI mitigation techniques applicable for an SAR system.  ...  Figure 2 . 2 A particular example: the range spectrum of the synthetic aperture radar (SAR) echoes (a) without RFI and (b) with RFI.  ... 
doi:10.3390/rs11202438 fatcat:7mlqnrz725afnoja4sksnoladu

On-Ground RFI Mitigation for Spaceborne Multichannel SAR Systems Using Auxiliary Beams

Tobias Bollian, Marwan Younis, Gerhard Krieger, Alberto Moreira
2022 IEEE Transactions on Geoscience and Remote Sensing  
In addition to conventional techniques, the use of multichannel SAR for RFI mitigation has been proposed, because its digital beamforming (DBF) capability allows for a spatial filtering of the received  ...  Radio frequency interference (RFI) is becoming a major concern for future synthetic aperture radar (SAR) missions due to the increased user demand for frequency occupation in a number of applications.  ...  The authors are with the Microwaves and Radar Institute, German Aerospace Center (DLR), 82234 Wessling, Germany (e-mail: tobias.bollian@dlr.de). Digital Object Identifier 10.1109/TGRS.2022.3146789  ... 
doi:10.1109/tgrs.2022.3146789 fatcat:qfghcvcovncoljtgkjd7vb5zfm

Bed topography of Jakobshavn Isbræ, Greenland, and Byrd Glacier, Antarctica

S. Gogineni, J.-B. Yan, J. Paden, C. Leuschen, J. Li, F. Rodriguez-Morales, D. Braaten, K. Purdon, Z. Wang, W. Liu, J. Gauch
2014 Journal of Glaciology  
We processed the data from each antenna-array element using synthetic aperture radar algorithms to improve radar sensitivity and reduce along-track surface clutter.  ...  We used ice thickness information derived from radar data in conjunction with surface elevation data to generate bed maps for these two critical glaciers.  ...  ACKNOWLEDGEMENTS This work was supported by the US National Science Foundation under grant ANT-0424589, by the National Aeronautics and Space Administration under grant NNX10AT68G and by the University  ... 
doi:10.3189/2014jog14j129 fatcat:hmv6pd6rcfaszjlx2jo64plsde

SETI OBSERVATIONS OF EXOPLANETS WITH THE ALLEN TELESCOPE ARRAY

G. R. Harp, Jon Richards, Jill C. Tarter, John Dreher, Jane Jordan, Seth Shostak, Ken Smolek, Tom Kilsdonk, Bethany R. Wilcox, M. K. R. Wimberly, John Ross, W. C. Barott (+2 others)
2016 Astronomical Journal  
Data were processed in near-real time for narrow-band (0.7- 100 Hz) continuous and pulsed signals, with transmitter/receiver relative accelerations from -0.3 to 0.3 m/s^2.  ...  We report radio SETI observations on a large number of known exoplanets and other nearby star systems using the Allen Telescope Array (ATA).  ...  Allen Family Foundation, who has provided major support for design, construction, and operations of the ATA.  ... 
doi:10.3847/0004-6256/152/6/181 fatcat:ncrtltvx6jbmjmyvddwt56s2ea

Deep Reinforcement Learning Control for Radar Detection and Tracking in Congested Spectral Environments [article]

Charles E. Thornton, Mark A. Kozy, R. Michael Buehrer, Anthony F. Martone, Kelly D. Sherbondy
2020 arXiv   pre-print
while also maintaining sufficient utilization of the available frequency bands required for a fine range resolution.  ...  learning (Deep RL) to develop a policy for optimal radar performance.  ...  An additional cognitive technique that can be used to increase detection performance is classification of targets from inverse synthetic aperture radar (ISAR) images [20] , in which information is extracted  ... 
arXiv:2006.13173v2 fatcat:yeenfr64fnh3ncx2qsjwiaghti

Remote Sensing Systems for Ocean: A Review (Part 2: Active Systems)

Meisam Amani, Farzaneh Mohseni, Nasir Farsad Layegh, Mohsen Eslami Nazari, Farzam Fatolazadeh, Abbas Salehitangrizi, Seyed Ali Ahmadi, Hamid Ebrahimy, Arsalan Ghorbanian, Shuanggen Jin, Sahel Mahdavi, Armin Moghimi
2022 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
Here, in part 2, seven active RS systems, including scatterometers, altimeters, gravimeters, Synthetic Aperture Radar (SAR), Light Detection and Ranging (LiDAR), Sound Navigation and Ranging (SONAR), High-Frequency  ...  This review paper provides useful information to all students and researchers who are interested in the oceanographic applications of active RS systems.  ...  Scatterometer, altimeter, gravimeter, Synthetic Aperture Radar (SAR), Light Detection and Ranging (LiDAR), SONAR, and HF radar are the most commonly used active systems for ocean studies.  ... 
doi:10.1109/jstars.2022.3141980 fatcat:kc55frb76nbtfkkfabvhbtflem

A survey on coping with intentional interference in satellite navigation for manned and unmanned aircraft

Ruben Morales-Ferre, Philipp Richter, Emanuela Falletti, Alberto de la Fuente, Elena Simona Lohan
2019 IEEE Communications Surveys and Tutorials  
Mathematical models, comparative tables for various interference management solutions, such as detection, localization, mitigation, and classification, as well as comparative numerical results based on  ...  In particular, critical applications such as aviation can be severely affected by undetected and un-mitigated interference and therefore interference management solutions are crucial to be employed.  ...  of the early, prompt and late correlators output for each satellite, taken from a synthetic aperture antenna and corrected for the receiver clock drift and jitter.  ... 
doi:10.1109/comst.2019.2949178 fatcat:pt24wzmo45abzp2d2wfwlfbtii

Development and evaluation of a multistatic ultrawideband random noise radar network

Matthew E. Nelms, Peter J. Collins
2011 2011 IEEE RadarCon (RADAR)  
Finally, a joint coverage area within the AFIT RCS range allows single and multi-target scenarios for assessing the 16-channel multistatic solution.  ...  Design and integration of a distributed and central signal and data processing architecture enables the Matlab Ⓡ -driven signal data acquisition, digital processing and multi-sensor image fusion.  ...  Additional research has applied the design to synthetic aperture radar (SAR) and inverse SAR imaging, as well as demonstrated capabilities in the areas of foliage and ground penetrating radar [16, 57,  ... 
doi:10.1109/radar.2011.5960699 fatcat:y2g5eaqjm5hxvpo4wwqkzq2wwe

NOIRE Study Report: Towards a Low Frequency Radio Interferometer in Space [article]

Baptiste Cecconi, Moustapha Dekkali, Carine Briand, Boris Segret, Julien N Girard, André Laurens, Alain Lamy, David Valat, Michel Delpech, Mickael Bruno, Patrick Gélard, Martin Bucher, Quentin Nenon, Jean-Mathias Grießmeier (+2 others)
2017 arXiv   pre-print
Improving the observation capabilities of the low frequency range (a few kHz to 100 MHz) requires to go to space and to set up a space based network of antenna that can be used as an interferometer.  ...  With such a platform, space system engineering and instrument development must be studied as a whole: each node is a sensor and all sensors must be used together to obtain a measurement.  ...  His research interests lie in the area of signal processing, specifically RFI mitigation by digital filtering. Mark J. Bentum (S'92, M'95, SM'09) was born in Smilde, The Netherlands, in 1967.  ... 
arXiv:1710.10245v1 fatcat:bjfz7zzafrgpnbtmcesepvuxi4

NOIRE study report: Towards a low frequency radio interferometer in space

Baptiste Cecconi, Moustapha Dekkali, Carine Briand, Boris Segret, Julien N. Girard, Andre Laurens, Alain Lamy, David Valat, Michel Delpech, Mickael Bruno, Patrick Gelard, Martin Bucher (+4 others)
2018 2018 IEEE Aerospace Conference  
Improving the observation capabilities of the low frequency range (a few kHz to 100 MHz) requires to go to space and to set up a space based network of antenna that can be used as an interferometer.  ...  With such a platform, space system engineering and instrument development must be studied as a whole: each node is a sensor and all sensors must be used together to obtain a measurement.  ...  His research interests lie in the area of signal processing, specifically RFI mitigation by digital filtering. Mark J. Bentum (S'92, M'95, SM'09) was born in Smilde, The Netherlands, in 1967.  ... 
doi:10.1109/aero.2018.8396742 fatcat:cftvh3xqfbawfetp2zn53vgr4i

Exploring Radio Pulsars With New Technologies

Pablo Torne, Michael Kramer, Frank Bertoldi
2017 Zenodo  
Their strong gravitational and magnetic fields, together with the stability of their rotations and the precision with which we can measure them using radio telescopes, make pulsars unique laboratories  ...  The data were taken with the Effelsberg 100-m radio telescope and used high radio frequencies between 4.85 and 18.95 GHz to partially overcome the strong scattering in the direction to the centre of the  ...  Acknowledgements We thank Lorenz Huedepohl and Ingebolg Weidl for his support with the use of the MPCDF's HPC Hydra supercomputer, Ewan Barr for being always available to discuss about the details of the  ... 
doi:10.5281/zenodo.820583 fatcat:yzk4mrtnrvcq5nkwqktcsb2f6m

Packed Ultra-wideband Mapping Array (PUMA): Astro2020 RFI Response [article]

Emanuele Castorina, Simon Foreman, Dionysios Karagiannis, Adrian Liu, Kiyoshi W. Masui, Pieter D. Meerburg, Laura B. Newburgh, Paul O'Connor, Andrej Obuljen, Hamsa Padmanabhan, J. Richard Shaw, Anže Slosar, Paul Stankus, Peter T. Timbie (+2 others)
2020 arXiv   pre-print
This document is a response to a request for information (RFI) by the Panel on Radio, Millimeter, and Submillimeter Observations from the Ground (RMS) of the Decadal Survey on Astronomy and Astrophysics  ...  Its rich science portfolio will include measuring structure in the universe from redshift z = 0.3 to 6 using 21cm intensity mapping, detecting one million fast radio bursts, and monitoring thousands of  ...  These technology developments make receiver electronics with integrated digitizers, digital filters, frequency translation, equalization, channelization, RFI mitigation, fast transient triggers, and high  ... 
arXiv:2002.05072v2 fatcat:y22rddkq5vattogemik72ovwca

Satellite Communications in the New Space Era: A Survey and Future Challenges [article]

O. Kodheli, E. Lagunas, N. Maturo, S. K. Sharma, B. Shankar, J. F. Mendoza Montoya, J. C. Merlano Duncan, D. Spano, S. Chatzinotas, S. Kisseleff, J. Querol, L. Lei (+2 others)
2020 arXiv   pre-print
Satellite communications have recently entered a period of renewed interest motivated by technological advances and nurtured through private investment and ventures.  ...  Secondly, the most promising applications are described i.e. 5G integration, space communications, Earth observation, aeronautical and maritime tracking and communication.  ...  S-band is used for weather radar, surface ship radar, Space Shuttle [53] . L and S bands are also used for TT&C.  ... 
arXiv:2002.08811v2 fatcat:u3uvhm5bovg6povxbwwl5h6rqq
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