Distributed Coherent Radar LFM Wideband Stretch Parameter Estimation Method
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摘要:
宽带分布式相参雷达技术能够有效提升目标测量精度和识别性能，具有重要的研究价值。针对现有雷达装备一般不具有同时对正负调频率宽带线性调频信号进行去斜处理的能力，即在接收相参合成阶段无法通过正负调频率宽带去斜方式获取宽带信号发射相参所需延时相位值的问题，该文利用单元雷达与目标之间存在延时差，将单元雷达发射的宽带线性调频信号等效为目标信号，对接收信号进行互相关处理获取发射相参合成所需的参数值，通过建模和仿真实现接收相参和发射相参合成处理，并对飞机目标进行1发2收相参探测试验，获得了理想的试验结果。该方法具有估计精度高、运算量小和时实性好的优势，可应用于分布式相参雷达工程实现。
Abstract:Wideband distributed coherent radar technology can effectively improve the target measurement accuracy and recognition performance, and has important research value. For the existing radar equipment generally does not have the ability to stretch the positive and negative frequency modulation rate wideband LFM signal simultaneously, that is the problem that the delay phase value of wideband signal transmit coherent can not be obtained by wideband stretch method in receive coherent synthesis phase. This article uses the delay difference between the unit radar and the target, equivalents the unit radar transmitting wideband LFM signal to the target signal, performs cross-correlation processing on the received signal to obtain the value of transmit coherent parameter. Through modeling and simulation receiving coherent and transmitting coherent synthesis processing are realized, and the two input single output coherent detection test of the aircraft target is carried out, and the ideal test results are obtained. The method has the advantages of high estimation accuracy, small calculation amount and good real-time performance, can be applied to distributed coherent radar engineering implementation.
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Key words:
- Coherent radar /
- Distributed /
- LFM wideband stretch /
- Parameter estimation
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CUOMO K M, COUTTS S D, MCHARG J C, et al. Wideband aperture coherence processing for next generation radar (NexGen)[R]. Report ESC-TR-2004-087, 2004. COUTTS S, CUOMO K, MCHARG J, et al. Distributed coherent aperture measurements for next generation BMD radar[C]. The 4th IEEE Workshop on Sensor Array and Multichannel Processing, Waltham, USA, 2006: 390–393. BROOKNER E. Phased-array and radar breakthroughs[C]. 2007 IEEE Radar Conference, Boston, USA, 2007: 37–42. BROOKNER E. Phased-array and radar astounding breakthroughs-an update[C]. 2008 IEEE Radar Conference, Rome, Italy, 2008: 1–6. doi: 10.1109/RADAR.2008.4720771. National Research Council of the National Academies. Making sense of ballistic missile defense: An assessment of concepts and systems for U.S. boost-phase missile defense in comparison to other alternatives[R]. Washington: National Academies Press, 2012. 鲁耀兵, 高红卫, 周宝亮. 分布式孔径相参合成雷达技术[J]. 雷达学报, 2017, 6(1): 55–64. doi: 10.12000/JR17014LU Yaobing, GAO Hongwei, and ZHOU Baoliang. Distributed aperture coherence-synthetic radar technology[J]. Journal of Radars, 2017, 6(1): 55–64. doi: 10.12000/JR17014 周宝亮, 周东明, 高红卫, 等. 分布式孔径相参合成雷达联合天线增益分析[J]. 雷达学报, 2017, 6(4): 332–339. doi: 10.12000/JR17055ZHOU Baoliang, ZHOU Dongming, GAO Hongwei, et al. Distributed aperture coherence-synthetic radar joint antenna gain analysis[J]. Journal of Radars, 2017, 6(4): 332–339. doi: 10.12000/JR17055 周宝亮, 高红卫, 文树梁, 等. 分布式相参雷达基线选择与标定误差分析[J]. 系统工程与电子技术, 2018, 40(11): 2438–2443. doi: 10.3969/j.issn.1001-506X.2018.11.08ZHOU Baoliang, GAO Hongwei, WEN Shuliang, et al. Distributed coherent radar baseline selection and calibration error analysis[J]. Systems Engineering and Electronics, 2018, 40(11): 2438–2443. doi: 10.3969/j.issn.1001-506X.2018.11.08 周宝亮, 雷子健, 周东明, 等. 分布式孔径相参雷达预警探测技术[J]. 信号处理, 2018, 34(11): 1330–1338. doi: 10.16798/j.issn.1003-0530.2018.11.008ZHOU Baoliang, LEI Zijian, ZHOU Dongming, et al. Early-warning detection technology of distributed aperture coherent radar[J]. Journal of Signal Processing, 2018, 34(11): 1330–1338. doi: 10.16798/j.issn.1003-0530.2018.11.008 周宝亮, 周东明, 高红卫, 等. 分布式孔径相参合成雷达系统设计与试验研究[J]. 现代防御技术, 2018, 46(3): 112–119. doi: 10.3969/j.issn.1009-086x.2018.03.017ZHOU Baoliang, ZHOU Dongming, GAO Hongwei, et al. Research on the distributed aperture coherence-synthetic radar system design and experiment[J]. Modern Defence Technology, 2018, 46(3): 112–119. doi: 10.3969/j.issn.1009-086x.2018.03.017 李尚远, 肖雪迪, 郑小平. 基于微波光子学的分布式相参孔径雷达[J]. 雷达学报, 2019, 8(2): 178–188. doi: 10.12000/JR19024LI Shangyuan, XIAO Xuedi, and ZHENG Xiaoping. Distributed coherent aperture radar enabled by microwave photonics[J]. Journal of Radars, 2019, 8(2): 178–188. doi: 10.12000/JR19024 GAO Hongwei, ZHOU Baoliang, ZHOU Dongming, et al. Performance analysis and experimental study on distributed aperture coherence-synthetic radar[C]. 2016 CIE International Conference on Radar, Guangzhou, China, 2016: 343–347. doi: 10.1109/RADAR.2016.8059191. LONG Teng, ZHANG Honggang, ZENG Tao, et al. High accuracy unambiguous angle estimation using multi-scale combination in distributed coherent aperture radar[J]. IET Radar, Sonar & Navigation, 2017, 11(7): 1090–1098. doi: 10.1049/iet-rsn.2016.0450 ZENG Tao, YIN Pilei, and LIU Quanhua. Wideband distributed coherent aperture radar based on stepped frequency signal: theory and experimental results[J]. IET Radar, Sonar & Navigation, 2016, 10(4): 672–688. doi: 10.1049/iet-rsn.2015.0221 SUN Peilin, TANG Jun, HE Qian, et al. Cramer–Rao bound of parameters estimation and coherence performance for next generation radar[J]. IET Radar, Sonar & Navigation, 2013, 7(5): 553–567. doi: 10.1049/iet-rsn.2012.0139 宋靖, 周青松, 张剑云. 基于相关法的分布式全相参雷达相干参数估计及相参性能[J]. 电子与信息学报, 2015, 37(7): 1710–1715. doi: 10.11999/JEIT141339SONG Jing, ZHOU Qingsong, and ZHANG Jianyun. Coherent parameters estimation by cross-correlation for distributed aperture fully coherent radar[J]. Journal of Electronics &Information Technology, 2015, 37(7): 1710–1715. doi: 10.11999/JEIT141339 刘兴华, 徐振海, 肖顺平. 分布式相参雷达几何布置约束条件[J]. 系统工程与电子技术, 2017, 39(8): 1723–1731. doi: 10.3969/j.issn.1001-506X.2017.08.09LIU Xinghua, XU Zhenhai, and XIAO Shunping. Geometric arrangement constraints of distributed coherent aperture radar[J]. Systems Engineering and Electronics, 2017, 39(8): 1723–1731. doi: 10.3969/j.issn.1001-506X.2017.08.09 黄巍, 贺知明, 向敬成. 宽带雷达能量积累与信号检测方法研究[J]. 系统工程与电子技术, 2004, 26(7): 889–892. doi: 10.3321/j.issn:1001-506X.2004.07.011HUANG Wei, HE Zhiming, and XIANG Jingcheng. On detection methods of broadband radar signals[J]. Systems Engineering and Electronics, 2004, 26(7): 889–892. doi: 10.3321/j.issn:1001-506X.2004.07.011 李巍, 齐巍, 丁赤飚, 等. 基于分布式雷达的宽带脉冲三维测距机制及方法研究[J]. 电子与信息学报, 2015, 37(3): 643–650. doi: 10.11999/JEIT140575LI Wei, QI Wei, DING Chibiao, et al. Research on mechanisms and methods in the 3D measurement with wide-band pulse based on distributed radar[J]. Journal of Electronics &Information Technology, 2015, 37(3): 643–650. doi: 10.11999/JEIT140575 -
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