Multichannel Analysis and Suppression of Sea Clutter for Airborne Microwave Radar Systems

Gracheva, Valeria; Ender, Joachim

doi:10.1109/tgrs.2015.2500918

Cited by 44 publications

(9 citation statements)

References 24 publications

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“…Airborne radar plays an important role in detecting aircraft, ships, and vehicles at long ranges [1]. However, due to the platform motion, slowly moving targets are easily masked by strong clutter; hence, clutter suppression is a challenging problem for airborne radar to overcome [2,3]. Traditional typical clutter suppression methods include displaced phase center antenna (DPCA) [4] and along-track interferometry (ATI) [5].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Clutter Suppression for Airborne Radar STAP Based on Matrix Manifolds

et al. 2021

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Clutter suppression in heterogeneous environments is a serious challenge for airborne radar. To address this problem, a matrix-manifold-based clutter suppression method is proposed. First, the distributions of training data in heterogeneous environments are analyzed, while the received data are characterized on a Riemannian manifold of Hermitian positive definite matrices. It is indicated that the training data with different distributions with the same power are separated, whereas data with the same distribution are closer together. This implies that the underlying geometry of the data can be better revealed by manifolds than by Euclidean space. Based on these properties, homogeneous training data are selected by establishing a binary hypothesis test such that the negative effects of the use of heterogeneous samples are alleviated. Moreover, as exploiting a geometric metric on manifolds to reveal the underlying information of data, experimental results on both simulated and real data validate that the proposed method has a superior performance with small sample support.

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Section: Introductionmentioning

confidence: 99%

Heterogeneous Clutter Suppression for Airborne Radar STAP Based on Matrix Manifolds

et al. 2021

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“…A problem of moving target selection on the clutter background, properties of the clutter, novel promising methods of the clutter rejection effectiveness growth and various aspects of this problems are permanently described in Russian and foreign scientific-engineering periodic journals [6][7][8][9][10][11][12][13][14][15][16]. Nevertheless, this scientific direction cannot be considered as fully studied.…”

Section: Introductionmentioning

confidence: 99%

“…In this case, the main operation of received data processing is the rejection of interference spectral components. [6][7][8][9][10][11][12][13][14][15], the problem of improvement of rejection filter characteristic with the purpose of transient reduction is not solved. The exclusion is the publication [16], in which the problem of transient acceleration is solved for the recursive rejection filters.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Analysis Non-recursive Rejection Filters Transient Mode

Попов¹,

Smolskiy²

2019

Infocommunications journal

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The non-recursive rejection filter (RF), which is improved with the purpose of transient acceleration at arriving of the passive interference edge caused by disturbing reflections from fixed or slow-moving objects, is synthesized by the state-variables method. The structural diagram is offered of the tunable RF in the transient with the purpose of improvement of signal extraction effectiveness from the moving targets on the background of the passive interference edge. The comparative analysis is performed of RF effectiveness for fixed and tunable structure in the transient according to the criterion of the normalized interference suppression coefficient and the improvement coefficient of the signal-to-interference ratio. The essential increase of the signal extraction effectiveness from the moving objects on the background on the interference edge for the wide class of the spectral-correlation characteristics at RF structure modification.

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“…Multifunction phased-array radar (PAR) is a specialized application of general PAR technology, designed to simultaneously fulfill the multiple functions of national air and weather surveillance [1,2]. Due to its ability to form and steer the radar beam electronically, and to reconfigure the beam between any two transmitted pulses or even between transmit and receive modes, PAR permits multiple functions to be carried out with the same radar.…”

Section: Introductionmentioning

confidence: 99%

Subarray-based FDA radar to counteract deceptive ECM signals

Abdalla

Wang

Zhao

et al. 2016

EURASIP J. Adv. Signal Process.

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In recent years, the frequency diverse array (FDA) radar concept has attracted extensive attention, as it may benefit from a small frequency increment, compared to the carrier frequency across the array elements and thereby achieve an array factor that is a function of the angle, the time, and the range which is superior to the conventional phase array radar (PAR). However, limited effort on the subject of FDA in electronic countermeasure scenarios, especially in the presence of mainbeam deceptive jamming, has been published. Basic FDA is not desirable for anti-jamming applications, due to the range-angle coupling response of targets. In this paper, a novel method based on subarrayed FDA signal processing is proposed to counteract deceptive ECM signals. We divide the FDA array into multiple subarrays, each of which employs a distinct frequency increment. As a result, in the subarray-based FDA, the desired target can be distinguished at subarray level in joint range-angle-Doppler domain by utilizing the fact that the jammer generates false targets with the same ranges to each subarray without reparations. The performance assessment shows that the proposed solution is effective for deceptive ECM targets suppression. The effectiveness is verified by simulation results.

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Multichannel Analysis and Suppression of Sea Clutter for Airborne Microwave Radar Systems

Cited by 44 publications

References 24 publications

Heterogeneous Clutter Suppression for Airborne Radar STAP Based on Matrix Manifolds

Heterogeneous Clutter Suppression for Airborne Radar STAP Based on Matrix Manifolds

Synthesis and Analysis Non-recursive Rejection Filters Transient Mode

Subarray-based FDA radar to counteract deceptive ECM signals

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