On the Possibility of Using LOFAR Radio Telescope for Passive Radiolocation

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

doi:10.23919/irs48640.2020.9253840

Cited by 9 publications

(13 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…and D is a set of ordered pairs (compare to Figure 3): (5,1), (5,2), (5,3), (5,4), (5,5), (5,6), (5,7), (5,8), (5,9), (5,10), (5,11), (6,1), (6,2), (6,3), (6,4), (6,5), (6,7), (6,8), (6,9), (6,10), (6,11), (7,1), (7,2), (7,3), (7,4), (7,5), (7,6), (7,7),(7,8), (7,9), (7,10), (7,11), (8,1), (8,2), (8,3), (8,4), (8,5), (8,6), (8,7), (8,8), (8,9), (8,10), (8,11), (9,2), (9,3), (9,4), (9,5), (9,6), (9,7), (9,8), (9,9), (9,10), (10,3), (10,4), (10,5), (10,6), (10,7), (10,8), (10,9), (11,4), (11,5), (11,6), (11,…”

Section: Lofar Stationmentioning

confidence: 99%

“…Figure 19 was created on the basis of data from the service flightradar24 [22]. The same registration was analyzed in [4] in the context of target parameter estimation without digital beamforming.…”

Section: Experiments With Real Signals 41 Description Of the Experimentsmentioning

confidence: 99%

“…Detailed results of the enhancement of echoes from other planes shown in Figure 19 are not considered in the paper because they are similar to results obtained for the planes SWR160 and RYR2XJ. In the case of the echo from the plane RYR2XJ, which was too far to analyze without digital beamforming [4], it was demonstrated that a bistatic range can be enhanced (with the beamforming) as to detect objects with a bistatic range over 100 km. The SWR160 plane was at about φ til = 8 • , θ til = 20 • and the plane RYR2XJ was at about φ til = −68 • , θ til = 11 • relative to the LOFAR station in Borowiec at that time.…”

Section: Experiments With Real Signals 41 Description Of the Experimentsmentioning

confidence: 99%

“…This paper is devoted to a new idea of the use of a LOFAR station and its beamforming for passive radiolocation purposes, and is an extension of a paper originally presented in 2020 at the 21st International Radar Symposium (IRS) [3]. Another paper [4] on this topic, which focuses more on passive radiolocation techniques, was also presented during the 21st International Radar Symposium in 2020. Each LOFAR station consists of two separated antenna fields receiving signals in different frequency ranges: low-frequency band antennas (LBAs) operating in a frequency range 10-90 MHz, and high-frequency antennas (HBAs) operating in the frequency range 110-250 MHz [1,5].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Beamforming of LOFAR Radio-Telescope for Passive Radiolocation Purposes

et al. 2021

Self Cite

View full text Add to dashboard Cite

This paper presents the results of investigations on the beamforming of a low-frequency radio-telescope LOFAR which can be used as a receiver in passive coherent location (PCL) radars for aerial and space object detection and tracking. The use of a LOFAR radio-telescope for the passive tracking of space objects can be a highly cost-effective solution due to the fact that most of the necessary equipment needed for passive radiolocation already exists in the form of LOFAR stations. The capability of the radiolocation of planes by a single LOFAR station in Borowiec is considered to be `proof of concept’ for future research focused on the localization of space objects. Beam patterns of single sets of LOFAR antennas (known as tiles), as well as for the entire LOFAR station, are presented and thoroughly discussed in the paper. Issues related to grating lobes in LOFAR beam patterns are also highlighted. A beamforming algorithm used for passive radiolocation purposes, exploiting data collected by a LOFAR station, is also discussed. The results of preliminary experiments carried out with real signals collected by the LOFAR station in Borowiec, Poland confirm that the appropriate beamforming can significantly increase the radar’s detection range, as well as the detection’s certainty.

show abstract

Section: Lofar Stationmentioning

confidence: 99%

Section: Experiments With Real Signals 41 Description Of the Experimentsmentioning

confidence: 99%

Section: Experiments With Real Signals 41 Description Of the Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Beamforming of LOFAR Radio-Telescope for Passive Radiolocation Purposes

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The success of these experiments serve as a proof of concept, allowing the future extension towards detecting and tracking satellites with the same technique. 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

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