| 摘要: |
| 分布式相参雷达(DCAR)是目前国内外雷达领域的重要研究方向，精确的参数估计是实现其良好相参性能的前提和核心。基于动目标模型，提出一种基于多脉冲积累的相参参数估计方法。该方法通过对多脉冲信号进行快、慢时间匹配滤波处理，实现多脉冲相参积累；再利用互相关法进行相参参数估计。仿真分析对比了不同脉冲个数和不同输入信噪比下的参数估计性能和相参性能，仿真结果表明，该方法具有可行性，且可以有效提高低信噪比情况下的参数估计性能和相参性能。 |
| 关键词: 分布式相参 参数估计 动目标 多脉冲积累 |
| DOI：10.11805/TKYDA2019182 |
| 分类号: |
| 基金项目:装备发展部装备预先研究项目(41413010201)；船舶重工联合预先研究项目(61411304010101-06) |
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| Coherent parameters estimation method for distributed coherent radar based on multi-pulse accumulation |
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WANG Xueqi, TU Gangyi, WU Shaopeng
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No.724 Research Institute of CSIC，Nanjing Jiangshu 211106，China
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| Abstract: |
| Distributed Coherent Aperture Radar(DCAR) is an important research direction in the field of radar at home and abroad. Accurate parameter estimation is the premise and core of good coherence performance. Based on the moving target model, a coherent parameter estimation method based on multi-pulse accumulation is proposed. The method performs fast-time and slow-time match filtering for multi-pulse signals, and obtains the results of multi-pulse coherent accumulation. Then the cross-correlation method is utilized to estimate the coherent parameters. The performance of parameter estimation and correlation under different numbers of pulses and different input signal-to-noise ratios are compared by simulation analysis. The simulation results show that the method is feasible and can effectively improve the performance of parameter estimation and coherence in low signal-to-noise ratio. |
| Key words: distributed coherence parameter estimation moving target multi-pulse accumulation |
