Reduced Complexity Multipath Clutter Rejection Approach for DRM-Based HF Passive Bistatic Radar

Zhao, Zhixin; Zhou, Xinhua; Zhu, Sihang; Hong, Sheng

doi:10.1109/access.2017.2756075

Cited by 18 publications

(16 citation statements)

References 12 publications

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“…Parameters in case 1 are SNR = −4dB, CNR = −10dB, k s = 4 and k c = 1. By (16) and (17), P d (0, T 0 ) is computed as 0.14. By the bisection method in Algorithm 1, the detection difference ε * is 0.85.…”

Section: Effectiveness Of Suboptimal Solutionsmentioning

confidence: 99%

“…To deal with highly varying disturbance characteristics in the presence of slowly moving targets, Colone et al [14] presented the sliding extensive cancellation algorithm (ECA-S). To reduce the complexity of the ECA approach, Zhao et al [15], [16] proposed a multipath clutter rejection approach with reduced complexity, namely, ECA-C, which takes full advantage of the main feature of orthogonal frequency division multiplexing (OFDM) signals.…”

Section: Introductionmentioning

confidence: 99%

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An Augmented Generalized Likelihood Ratio Test Detector for Signal Detection in Clutter and Noise

2019

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To deal with the problem of signal detection in correlated subspace, this paper presents an augmented generalized likelihood ratio test (AGLRT) detector. Compared with traditional GLRT detector, this AGLRT detector has the advantage of incorporating the intersection component between signal and clutter subspace. Signal-contribution-ratio (SCR) and clutter-contribution-ratio (CCR) are defined to characterize the contribution of signal and clutter in the common subspace, respectively. The closed forms of both probability of detection and false alarm for the AGLRT detector are presented. It is shown that the detection performance of the AGLRT detector is better than the GLRT detector by choosing appropriate weight and threshold parameters. Then, analytical formulas of the suboptimal weight and threshold to maximize the detection performance are obtained. Finally, the effectiveness of the proposed detector is demonstrated by various examples. INDEX TERMS Detection, generalized likelihood ratio test (GLRT), matched subspace detector, generalized Marcum Q-function.

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Section: Effectiveness Of Suboptimal Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Augmented Generalized Likelihood Ratio Test Detector for Signal Detection in Clutter and Noise

2019

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“…Electronics 2018, 7, x FOR PEER REVIEW 3 of 18 frequency-division multiplexing-based PBR, such as RLS-C (recursive least square by sub-carrier) [21], ECA-C (ECA by carrier) [22], ECA-CD (ECA by carrier and doppler shift) [23] and so on. In addition to the direct wave interference and ground clutter, the radar illuminator-based PBR is also influenced by the false-alarm clutter during processing, as analyzed above.…”

Section: Non-uniform Polar Grid Construction For Pbrmentioning

confidence: 99%

“…In recent years, many algorithms around ECA have been proposed, such as ECA-S (ECA-sliding) [19], ECA-ES (ECA-expectation simplified) [20] and so on. In sub-carrier domain, algorithms only work in orthogonal frequency-division multiplexing-based PBR, such as RLS-C (recursive least square by sub-carrier) [21], ECA-C (ECA by carrier) [22], ECA-CD (ECA by carrier and doppler shift) [23] and so on.…”

mentioning

confidence: 99%

PBR Clutter Suppression Algorithm Based on Dilation Morphology of Non-Uniform Grid

Zhu

Li²,

Pan

et al. 2019

Electronics

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Many new challenges are faced by the PBR (passive bi-static radar) employing non-cooperative radar illuminators. After the CFAR (constant false alarm) processor, the appearance of the amount of false alarm clutter points impacts the following tracing performance. To enhance the PBR tracing performance, we consider to reduce these clutter points before target tracing as soon as possible. In this paper, we propose a PBR clutter suppression algorithm based on dilation morphology of non-uniform grid. Firstly, we construct the non-uniform polar grid based on the acquisition geometry of PBR. Then, with the help of the grid platform, we separate the false alarm clutter points based on the dilation morphology. To efficiently operate the algorithm, we build up its parallel iteration scheme. To verify the performance of the proposed algorithm, we utilize both simulated data and field data to do the experiment. Experimental results show that the algorithm can effectively suppress most of the clutter points. Besides, we respectively combine the proposed suppression algorithm with two typical tracking algorithms to test the performance. Experimental results reveal that the compound tracing algorithm outperforms the traditional one. It can enhance the PBR tracing performance, reduce the occurrence probability of false tracks and meanwhile save time.

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“…These ZDC may mask the echoes of weak targets in the range‐Doppler (RD) map when using cross‐ambiguity function (CAF), so a ZDC rejection pre‐processing is essential for using CAF detector to obtain corresponding information of targets [7–11]. The recursive least square and least mean square adaptive filter are used to suppress the ZDC before using CAF in PBR systems [7–9]. The extensive cancellation algorithm is also usual method to reject the ZDC [11], but those algorithms have the additional computation and memory loads.…”

Section: Introductionmentioning

confidence: 99%

Target detection approach for DRM‐based passive bistatic radar

Zhao

Zhou

et al. 2019

J. eng.

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Reduced Complexity Multipath Clutter Rejection Approach for DRM-Based HF Passive Bistatic Radar

Cited by 18 publications

References 12 publications

An Augmented Generalized Likelihood Ratio Test Detector for Signal Detection in Clutter and Noise

An Augmented Generalized Likelihood Ratio Test Detector for Signal Detection in Clutter and Noise

PBR Clutter Suppression Algorithm Based on Dilation Morphology of Non-Uniform Grid

Target detection approach for DRM‐based passive bistatic radar

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