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Optimizing polyphase sequences for orthogonal netted radar systems

Journal of Systems Engineering and Electronics 2012年第4期23卷 529-535页

作者： Wenwu Chen Zhengyu Cai Rushan Chen Zhao Zhao School of Electronic Engineering and Optoelectric Technology Nanjing University of Science and TechnologyNanjing 210094P.R.China

Orthogonal netted radar systems （ONRS） can fundamentally improve the radar performance by using a group of specially designed orthogonal polyphase code signals which require a very low aperiodic autocorrelation peak sidelobe level, low aperiodic cross-correlation, and a good resilience to small Doppler shifts. However, the existing numerical solutions degrade severely in the presence of small Doppler shifts. A new set of polyphase sequences is presented with good correlation properties as well as resilience to Doppler shifts. These sequences are built by using numerical optimization based on correlation properties as well as the Doppler effects on matched filter outputs, which maintains the Doppler tolerance. The statistical simulated annealing algorithm and the greedy code search method are used to optimize the sequences. Correlation and Doppler results are compared with the best-known sequences and show to be superior.

关键词： Doppler resilience netted radar orthogonal polyphasecode simulated annealing (SA).

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ECCM schemes in netted radar system based ontemporal pulse diversity

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Journal of Systems Engineering and Electronics 2016年第5期27卷 1001-1009页

作者： ahmed abdalla zhao yuan bin tang School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 611731 China

For a netted radar system to counteract the deceptionelectronic countermeasure （ECM） signals, an effective electroniccounter countermeasure （ECCM） approach is proposed. The proposedapproach is realized based on the new signaling strategyfor the temporal pulse diversity, which makes use of transmittingpulses at each pulse repetition interval （PRI） with specific transmissionpulse block, and then following proper processing andinformation fusion. The existence of the deceptive ECM signal isconfirmed by one station, while the other stations in the nettedradar with same parameters applied the pulse diversity ***, this method ensured that, pulse diversity can be appliedin netted radar. The performance assessment shows that theproposed solutions are effective in presence of ECM signals. Thisalgorithm has been demonstrated by simulations. The presentedsimulation results are in excellent consensus with theoretical predictions.

关键词： pulse diversity electronic counter countermeasure(ECCM) digital radio frequency memory (DRFM) electronic countermeasure(ECM) netted radar matching filter.

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维普期刊数据库

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ORTHOGONAL DISCRETE FREQUENCY-CODING WAVEFORM DESIGN FOR MIMO radar

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Journal of Electronics(China) 2008年第4期25卷 471-476页

作者： Liu Bo He Zishu Institute of Electronic Engineering University of Electronic Science and Technology of China Chengdu 610054 China

Design of orthogonal code sets with ideal correlation properties is crucial for orthogonalMultiple Input Multiple Output(MIMO)radar.A modified Genetic Algorithm(GA)is proposed tonumerically design orthogonal Discrete Frequency-Coding Waveforms(DFCWs)with good correlationproperties for MIMO *** of the designed results are presented,and their correlation propertiesare better than those presented in *** effect of Doppler frequency shift on the performanceof these signals is simply *** results and comparisons show that the proposedalgorithm is more effective for the design of DFCWs with superior aperiodic correlation properties.

关键词： Multiple Input Multiple Output (MIMO) radar netted radar Ambiguity function Genetic Algorithm (GA) Discrete Frequency-Coding Waveforms (DFCWs)

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