Beamforming of LOFAR Radio Telescope Antennas Used as Sensors in Passive Radiolocation System

Droszcz, Aleksander; Klos, Julia; Jędrzejewski, Konrad; Kulpa, Krzysztof; Pożoga, Mariusz

doi:10.23919/irs48640.2020.9253779

Cited by 8 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another very important research area is related to beamforming for passive radar purposes. Some preliminary results on investigations on this subject were presented in [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Verification of the Concept of Using LOFAR Radio-Telescopes as Receivers in Passive Radiolocation Systems

Klos

Jędrzejewski

Droszcz

et al. 2021

Sensors

Self Cite

View full text Add to dashboard Cite

The paper presents a new idea of using a low-frequency radio-telescope belonging to the LOFAR network as a receiver in a passive radar system. The structure of a LOFAR radio-telescope station is described in the context of applying this radio-telescope for detection of aerial (airplanes) and space (satellite) targets. The theoretical considerations and description of the proposed signal processing schema for the passive radar based on a LOFAR radio-telescope are outlined in the paper. The results of initial experiments verifying the concept of a LOFAR station use as a receiver and a commercial digital radio broadcasting (DAB) transmitters as illuminators of opportunity for aerial object detection are presented.

show abstract

“…Another very important research area is related to beamforming for passive radar purposes. Some preliminary results on investigations on this subject were presented in [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

“…This paper is an extension of a paper originally presented in 2020 at the 21st International Radar Symposium [ 8 ]. Another paper related to particularities of beamforming of a LOFAR station for passive radiolocation purposes [ 9 ] was also presented during the 21st International Radar Symposium in 2020.…”

Section: Introductionmentioning

confidence: 99%

Experimental Verification of the Concept of Using LOFAR Radio-Telescopes as Receivers in Passive Radiolocation Systems

Klos

Jędrzejewski

Droszcz

et al. 2021

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

“…An interesting study that may lead to future developments within space debris radar measurements is the employment of passive radar transmission by means of Digital Audio Broadcasting (DAB) services. In [55,56], the possibility of taking advantage of the reflected signal from DAB stations using a Low Frequency Array for Radio Astronomy (LOFAR) located in Borówiec (Poland) as a receiver is envisioned.…”

Section: European Countries' Radar Measurementsmentioning

confidence: 99%

Crowded Space: A Review on Radar Measurements for Space Debris Monitoring and Tracking

et al. 2021

View full text Add to dashboard Cite

Space debris monitoring is nowadays a priority for worldwide space agencies, due to the serious threat that these objects present. More and more efforts have been made to extend the network of available radar systems devoted to the control of space. A meticulous review has been done in this paper, in order to find and classify the considerable amounts of data provided by the scientific community that deal with RADAR measurement for the debris monitoring and tracking. The information gathered is organized based on the volume of found data and classified taking into account the geographical location of the facilities.

show abstract

“…The teams from the Warsaw University of Technology, Poland, and the Space Research Centre of the Polish Academy of Sciences have been engaged in researching the utilisation of radio telescopes from the international European network of astronomical radio telescopes Low-Frequency Array (LOFAR) [1][2][3][4] as receivers in passive radar [5][6][7][8][9][10][11][12][13] for several years. Initially, their focus was on detecting aeroplanes [5][6][7][8][9][10][11][12][13], but they later expanded their research to include the observation of space objects that travel in Low-Earth Orbit (LEO) [9][10][11]. The LOFAR station's massive antenna array enables the passive detection of space objects.…”

Section: Introductionmentioning

confidence: 99%

Experimental verification of passive radar space object detection with a single low‐frequency array radio telescope

Jędrzejewski,

Malanowski,

Kulpa

et al. 2023

IET Radar Sonar & Navi

Self Cite

View full text Add to dashboard Cite

The paper focuses on the results of experimental research on the possibility of passive space object detection using a single radio telescope from the European Low‐Frequency Array (LOFAR) network of astronomical radio telescopes. Commercial digital television (DVB‐T) transmitters were used as illuminators of opportunity in this radar system. In the conducted experiments, one LOFAR radio telescope served both as a surveillance receiver and reference receiver in a passive radar system. The greater part of the LOFAR telescope array was used to observe a space object, while a small part of the array was directed towards the illuminator of opportunity to record the reference signal. One of the most important problems to overcome with utilising the LOFAR radio telescope in such a solution was the effective suppression of the direct‐path component in a surveillance signal coming from the illuminator of opportunity, which was relatively close to the LOFAR radio telescope. The results regarding the passive detection of the International Space Station, included in the paper, confirm the possibility of observing the space object flying in Low‐Earth Orbit using the LOFAR telescope or another receiving system with a similar antenna array.

show abstract

Beamforming of LOFAR Radio Telescope Antennas Used as Sensors in Passive Radiolocation System

Cited by 8 publications

References 2 publications

Experimental Verification of the Concept of Using LOFAR Radio-Telescopes as Receivers in Passive Radiolocation Systems

Experimental Verification of the Concept of Using LOFAR Radio-Telescopes as Receivers in Passive Radiolocation Systems

Crowded Space: A Review on Radar Measurements for Space Debris Monitoring and Tracking

Experimental verification of passive radar space object detection with a single low‐frequency array radio telescope

Contact Info

Product

Resources

About