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Passive GNSS-based SAR imaging and opportunities using Galileo E5 signals
2015
Science China Information Sciences
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Experimental images obtained using a single Galileo channel, E5a or E5b, are presented and analyzed. ...
This paper investigates the feasibility of Galileo navigation satellites as transmitters of opportunity in passive bistatic synthetic aperture radar (SAR) systems from the perspectives of signal processing ...
In this paper, the focus is on GNSS-based passive SAR. ...
doi:10.1007/s11432-015-5335-5
fatcat:urcr3yozfrbbbidcocpogl34vy
Passive GNSS-Based SAR Resolution Improvement Using Joint Galileo E5 Signals
2015
IEEE Geoscience and Remote Sensing Letters
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The experimental hardware (see Fig. 8 ) of GNSS-based SAR was developed at The University of Birmingham and was able to capture the full E5 signal of a Galileo satellite. ...
Section II describes the signal structure of the E5 signal and the resulting Galileo-based SAR point spread function (PSF) of a single channel. ...
doi:10.1109/lgrs.2015.2417594
fatcat:mqjtfvkednhqpk3kgtusnbofoe
A Novel Range Compression Algorithm for Resolution Enhancement in GNSS-SARs
2017
Sensors
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In this paper, a novel range compression algorithm for enhancing range resolutions of a passive Global Navigation Satellite System-based Synthetic Aperture Radar (GNSS-SAR) is proposed. ...
Both theoretical analysis and simulation results have demonstrated that significant range resolution improvement in GNSS-SAR images can be achieved by the proposed range compression algorithm, compared ...
Galileo signals were employed in [11] (single Galileo E5) and [14, 15] (joint Galileo E5), in which a single Galileo E5 signal could provide potential range resolution at the level of 15 m with a chip ...
doi:10.3390/s17071496
pmid:28672830
pmcid:PMC5539786
fatcat:47kzuiuwcrd7ppk6w47z5a77qu
An Improved Pre-processing Algorithm For Resolution Optimization In Galileo Based Bistatic SAR
2019
IEEE Access
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Galileo based bistatic synthetic aperture radar (Galileo-BiSAR) is a subclass of passive radar, where the Galileo satellite is used as the transmitter and the receiver can be mounted on a moving vehicle ...
The existing pre-processing algorithm for Galileo-BiSAR system was established on the idea that only single band E5b signal is used. ...
Galileo satellite, as the transmitter of opportunity of Galileo-BiSAR, is the European developed GNSS in last couple of decades. ...
doi:10.1109/access.2019.2938238
fatcat:64s4qzew3rfi3ahl6mjbac377e
Experiences Gained during the Development of a Passive BSAR with GNSS Transmitters of Opportunity
2008
International Journal of Navigation and Observation
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The GLONASS satellite is used for experiential confirmation of the main results. All these results are presented and briefly discussed. ...
It highlights and briefly discusses various systems parameters (e.g., resolution, power budget), problems (e.g., interference, heterodyne channel Doppler compensation), and signal processing algorithms ...
The most promising GNSS for the considered purposes are the EU Galileo system and the new proposed GPS signal structure [6]. Figure 2 (a) shows the signal spectrum of Galileo E5 signal. ...
doi:10.1155/2008/807958
fatcat:ipu33ihn2nfc7ktq4yoxshhdee
Passive coherent multistatic SAR using spaceborne illuminators
2020
IET radar, sonar & navigation
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Introduction A passive SAR system uses transmitters of opportunity to form radar imagery. ...
Fig. 1 1 The concept of passive GNSS-based SAR with a fixed receiver on the ground
Fig. 3 3 Multistatic GNSS-based SAR imaging geometry Fig. 4 Example of multistatic GNSS-based SAR k-space support ...
doi:10.1049/iet-rsn.2019.0425
fatcat:xsqnloly5fdsniede5yinwbqoe
Decimetre Level Range Resolution for Beidou B3I Signal Based Passive SAR Imaging – Proof-of-Concept Experimental Demonstrations
2021
IEEE Access
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This reveals that decimetre level range resolution can be achieved for Beidou B3I-SAR on the basis of proposed methods, in contrast to the current best result of meters level in passive GNSS-based SAR ...
Accordingly, studies of passive Beidou B3I signal-based synthetic aperture radar (Beidou B3I-SAR) are very meaningful in terms of promoting the rapid development of the Beidou technique. ...
For resolution issue with respect to passive SAR using other types of GNSS signals i.e. ...
doi:10.1109/access.2021.3056666
fatcat:tnhy4qadpfd3bglyobzsmo3esy
An Image Formation Algorithm for Bistatic SAR using GNSS Signal with Improved Range Resolution
2020
IEEE Access
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Passive synthetic aperture radar (SAR) using Global Navigation Satellite System (GNSS) signals as the illuminators of opportunity has a relative coarse range resolution due to the narrow bandwidth of the ...
Compared with the traditional GNSS-based passive SAR imaging algorithm, the results of the proposed method show that the imaging performance can be improved for better range resolution and lower side-lobes ...
OVERVIEW OF GNSS-BASED PASSIVE SAR GNSS-based passive SAR utilizes GNSS satellites as the transmitters of opportunity, including GPS, GALILEO, GLONASS and BeiDou. ...
doi:10.1109/access.2020.2990622
fatcat:v4g6tlgfrvdz5j2hnndtbgeyfa
Space-surface bistatic synthetic aperture radar with navigation satellite transmissions: a review
2015
Science China Information Sciences
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Transmitter Airborne receiver D ire ct sig na l D ir e c t s ig n a l Reflected signal Ground receiver (stationary /moving) R ef le ct ed si gn al Figure 1 (Color online) The concept of GNSS-based passive ...
Keywords bistatic synthetic aperture radar, GNSS-based SAR, space-surface bistatic SAR, coherent change detection, multi-perspective imaging, multistatic imaging, spatial resolution improvement Citation ...
SNR can be improved essentially by using non-coherent integration of signals from more than one transmitting channel, for example the Galileo E5 channels. ...
doi:10.1007/s11432-015-5334-6
fatcat:xpsdbiiwb5edjbyjn74whqelvy
GNSS-based bistatic SAR: a signal processing view
2013
EURASIP Journal on Advances in Signal Processing
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This article presents signal processing algorithms used as a new remote sensing tool, that is passive bistatic SAR with navigation satellites (e.g. ...
GPS, GLONASS or Galileo) as transmitters of opportunity. ...
In terms of the passive operation, use of GNSS is an ideal choice. ...
doi:10.1186/1687-6180-2013-98
fatcat:6sk7ejak5rgsbc63cqr36hdagi
System Design and Analysis for Energy-Efficient Passive UAV Radar Imaging System using Illuminators of Opportunity
[article]
2021
arXiv
pre-print
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2020 pre-print arXiv:2010.00179v1 fatcat:6ghntbwdpjhtfch5sdgwnptlo4
Equipped with a SAR receiver, the UAV platform passively reuses the backscattered signal of the target scene from an external illuminator, such as SAR satellite, GNSS or ground-based stationary commercial ...
In this paper, an energy-efficient passive UAV radar imaging system using illuminators of opportunity is first proposed and investigated. ...
For the GNSS illuminator, the largest bandwidth available is 20MHz using the Galileo E5 signal, which provides finest ρ g r of 7.5m. ...
arXiv:2010.00179v2
fatcat:dngftori6zfa7lfd4cegrllfym
Maritime Moving Target Localization Using Passive GNSS-Based Multistatic Radar
2018
IEEE Transactions on Geoscience and Remote Sensing
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ACKNOWLEDGEMENT Work on the conversion of the SX3 to a passive radar receiver was supported under a contract of the European Space Agency in the frame of the Announcement of Opportunities on GNSS Science ...
and Innovative Technology within the European GNSS Evolutions Programme (EGEP ID 89 ). ...
For example, it has already been shown that this spatial diversity can be used to drastically improve spatial resolution in GNSS-based SAR images [17] . ...
doi:10.1109/tgrs.2018.2838682
fatcat:7y7vawp6enhl5kkrrnikyjswfu
Passive Radar Imaging of Ship Targets With GNSS Signals of Opportunity
2020
IEEE Transactions on Geoscience and Remote Sensing
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bandwidths (e.g. over 10 MHz for Galileo E5 a/b or GPS L5) ; such standardization of GNSS sources assures that the same GNSS-based passive radar could be used in any part of the Earth without the need ...
GNSS-BASED PASSIVE RADAR FOR MARITIME SURVEILLANCE A general configuration of the GNSS-based radar system for maritime surveillance comprises navigation satellites, used as transmitters of opportunity, ...
He leads a team of researchers on radar systems and signal processing, including passive radar, SAR processing, multi-static, MIMO and cognitive radar, where he has more than 100 publications in peer reviewed ...
doi:10.1109/tgrs.2020.3005306
fatcat:spwot5oikfb6nbkslmnklmlhpm
Spatial Resolution Improvement in GNSS-Based SAR Using Multistatic Acquisitions and Feature Extraction
2016
IEEE Transactions on Geoscience and Remote Sensing
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Index Terms-passive SAR, GNSS-based SAR, bistatic SAR, multistatic SAR, feature extraction, CLEAN I. ...
CONCLUSIONS This paper addresses a passive multistatic SAR system based on GNSS transmission. ...
doi:10.1109/tgrs.2016.2583784
fatcat:bkt4adqgdfaabbqwdli2yunaau
D3.6 Gap analysis highlighting the technical and operational requirements of the European Polar Research Programme for satellite applications
2018
Zenodo
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This report follows directly from deliverable D3.3 which described the existing uses of space assets by European polar operators. ...
This report (D3.6) is a component of EU-PolarNet work package 3, which encompasses Infrastructures, Facilities and Data, and falls under task 3.2. ...
The Galileo constellation is a key enabler of the required E1/E5 dual frequency. ...
doi:10.5281/zenodo.5121461
fatcat:a2o2eb2vgva6hojiwrhvwjjf2u
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