A wideband antenna array for DVB-T based passive bistatic radar applications

O’Hagan, Daniel; Basavarajappa, Vedaprabhu; Knott, Peter; Kuschel, Heiner; Ummenhofer, Martin; Simeoni, Massimilano

doi:10.1049/cp.2012.1666

Cited by 4 publications

(3 citation statements)

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“…In a previous work [5], the Bucci algorithm [3] has been used to solve the array synthesis problem for a circular array of antennas. In this paper, we investigate a convex optimization approach and compare the results with Bucci method.…”

Section: Circular Arrays and Beamforming Algorithmsmentioning

confidence: 99%

Array pattern synthesis techniques for circular array of antennas for passive radar applications

Bournaka

O’Hagan

Kuschel

2014

2014 11th European Radar Conference

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We investigate the design of phased array pattern synthesis for applications in passive radars. In particular, we identify certain drawbacks associated with the Bucci algorithm based beamformer design and investigate a convex optimization based approach. The performance is compared in terms of least squares errors and the capability of placing nulls in the direction of interference signals using a circular array of antennas

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Section: Circular Arrays and Beamforming Algorithmsmentioning

confidence: 99%

Array pattern synthesis techniques for circular array of antennas for passive radar applications

Bournaka

O’Hagan

Kuschel

2014

2014 11th European Radar Conference

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“…MULTIBAND passive radar that is based on radio and television signals is a research hotspot nowadays, [1][2][3][4][5] in which the design of broadband receiving antenna is an important research direction. [6][7][8][9][10] According to the published literatures, typical passive radar systems mainly use two independent antenna arrays to receive very high frequency (VHF) signals and ultra-high frequency (UHF) signals. 6,[11][12][13] The elements used for antenna array mainly include common antenna types such as the dipole antenna, the patch antenna, the Yagi antenna, and the disc-cone antenna.…”

Section: Introductionmentioning

confidence: 99%

Design of wideband receiving antenna for VHF / UHF band passive radar

Cao

Zhang

Yunhua

et al. 2022

Int J RF Mic Comp-Aid Eng

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To broaden bandwidth of the receiving antenna for VHF/UHF band passive radar, a broadband improved biconical antenna loaded with resistor-inductorcapacitor (RLC) circuits is designed. Firstly, by introducing six metal rods into the biconical antenna to replace part of the cone, the feature size of the antenna is effectively reduced. Secondly, by introducing six parallel RLCloading circuits into the antenna, the bandwidth of the antenna at the low frequency end is effectively broadened, and at the meantime mutual coupling of the array composed of the proposed antenna becomes weak. The measured results show that the impedance bandwidth of the antenna corresponding to reflection coefficient less than À10 dB is 174-843 MHz. Moreover, the antenna also has good omnidirectional pattern in the horizontal plane, and the pattern characteristics have good consistency in the whole impedance bandwidth.

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“…The peak find process generates a list of peaks that may correspond to the DOA of the sought signal components. Antenna systems that have interelement spacing larger than half-wavelength suffer from the aliasing effect [3,26,27]. This results in multiple peaks corresponding to the same impinging signal.…”

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confidence: 99%

Space-Time Adaptive Cancellation in Passive Radar Systems

Pető

Seller

2018

International Journal of Antennas and Propagation

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A critical issue in the realization of passive radar systems is the effective suppression of the zero Doppler interference (ZDI). The performance of the clutter cancellation relies much on the used algorithms. Several state-of-the-art approaches consist in the independent use of spatial and temporal algorithms for ZDI suppression. In this paper, a novel interference cancellation algorithm is proposed, which jointly exploits the available information from both space and time domains. We call this novel method Space-Time Adaptive Cancellation (STAC), and it differs from previous schemes included among the tools of SpaceTime Adaptive Processing (STAP). The STAC algorithm is able to cancel out the high power direct and multipath signals on all the surveillance antenna channels prior to the beamforming and other space domain processing methods. The proposed preprocessing technique facilitates the detection of targets even in the direction of the illuminator or large static scatterers. Moreover, the interference rejection capability is also enhanced in the space domain. The performance of the presented algorithm is verified through simulations and field measurements. The experiments show improvement over the currently available filtering techniques.

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A wideband antenna array for DVB-T based passive bistatic radar applications

Cited by 4 publications

References 0 publications

Array pattern synthesis techniques for circular array of antennas for passive radar applications

Array pattern synthesis techniques for circular array of antennas for passive radar applications

Design of wideband receiving antenna for VHF / UHF band passive radar

Space-Time Adaptive Cancellation in Passive Radar Systems

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