Side Peaks Interference Suppression in DVB-T Based Passive Radar

Tao, Ran; Gao, Zhiwen; Wang, Yue

doi:10.1109/taes.2012.6324746

Cited by 25 publications

(6 citation statements)

References 18 publications

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“…We have proposed different approaches to solve this problem. For Chinese standard DVB signals, the sidelobe peaks can be eliminated by conditioning the frame pseudorandom noise header of the reference signal [32]; while for European standard DVB signals, we excluded the sidelobe peaks by treating the pilot carriers [33].…”

Section: Design Of Signal Processing Flowmentioning

confidence: 99%

Efficient architecture and hardware implementation of coherent integration processor for digital video broadcast‐based passive bistatic radar

Shan

Liu

Zhang

et al. 2016

IET Radar, Sonar & Navigation

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Section: Design Of Signal Processing Flowmentioning

confidence: 99%

Efficient architecture and hardware implementation of coherent integration processor for digital video broadcast‐based passive bistatic radar

Shan

Liu

Zhang

et al. 2016

IET Radar, Sonar & Navigation

Self Cite

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“…One is caused by CP (called CP peaks), and the other is caused by the sync signal (called the sync signal ambiguity strip). In contrast to the DVB-T signal, where the pilots can cause intrasymbol and intersymbol ambiguity peaks [13,26], the pilots in the CMMB signal do not cause ambiguity peaks because an additional scrambling operation removes the correlation of pilots between symbols and there is no boosted power level of pilots over the data subcarriers. The set A of CP peaks can be written as…”

Section: Af Analysis and Correctionmentioning

confidence: 99%

Experimental Research for CMMB-Based Passive Radar Under a Multipath Environment

Wan

Zhang

et al. 2014

IEEE Trans. Aerosp. Electron. Syst.

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China mobile multimedia broadcasting (CMMB) is a digital television standard that works in a single-frequency network (SFN)at the ultrahigh frequency band and adopts orthogonal frequency division multiplex modulation with a cyclic prefix (CP-OFDM). This paper investigates the practical feasibility of a CMMB-based passive radar (CPR) in the multipath propagation environment. First, several aspects involving system considerations induced by propagation conditions and radar signal characteristics are analyzed, including power budget, dynamic range requirement, clutter rejection metrics, and ambiguity function analysis. Then targeting the problems caused by multipath signals in the complex propagation environment and corresponding processing techniques are discussed, covering reference signal extraction and clutter rejection, as well as, tracking and localization. The highlight is clutter rejection with subcarrier-based spatial adaptive processing (SSAP), which is matched with the features of CP-OFDM. The applicability of SSAP under severe channel response spread mainly contributed by SFN is specially considered. Last, a description of the experiments and the CPR systems developed by Wuhan University is given, together with results from previous field trials for low-altitude aircraft and ship detection.

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“…As shown in Figure 1, taking DVB-T, DTMB, and 5th generation mobile communication technology (5G) downlink signals as examples, their ambiguity functions show mainlobe and sidelobe widening. Additionally, due to the special frame structures of these signals, there are side peaks in the ambiguity functions [16][17][18]. These non-ideal factors pose challenges in the weak targets detection.…”

Section: Introductionmentioning

confidence: 99%

Fast Algorithm of Passive Bistatic Radar Detection Based on Batches Processing of Sparse Representation and Recovery

Cui,

Wang,

Zhou

et al. 2024

Remote Sensing

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In the passive bistatic radar (PBR) system, methods exist to address the issue of detecting weak targets without being influenced by non-ideal factors from adjacent strong targets. These methods utilize the sparsity in the delay-Doppler domain of the cross ambiguity function (CAF) to detect weak targets. However, the modeling and solving of this method involve substantial memory consumption and computational complexity. To address these challenges, this paper establishes a target detection model for PBR based on batch processing of sparse representation and recovery. This model partitions the CAF into blocks, identifies blocks requiring processing based on the presence of targets, and improves the construction and utilization of the measurement matrix. This results in a reduction in the computational complexity and memory resource requirements for sparse representation and recovery, and provides favorable conditions for parallel execution of the algorithm. Experimental results indicate that the proposed approach increases the number of blocks by a factor of four, and reduces the number of real multiplications by approximately an order of magnitude. Hence, compared with the traditional approach, the proposed approach enables fast and stable detection of weak targets.

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Side Peaks Interference Suppression in DVB-T Based Passive Radar

Cited by 25 publications

References 18 publications

Efficient architecture and hardware implementation of coherent integration processor for digital video broadcast‐based passive bistatic radar

Efficient architecture and hardware implementation of coherent integration processor for digital video broadcast‐based passive bistatic radar

Experimental Research for CMMB-Based Passive Radar Under a Multipath Environment

Fast Algorithm of Passive Bistatic Radar Detection Based on Batches Processing of Sparse Representation and Recovery

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