ID |
原文 |
译文 |
12824 |
针对时分复用(time division multiplexing, TDM)多输入多输出(multiple-input multp l eoutput, MIMO)调频连续波(frequency modulated continuous wave, FMCW)雷达的速度-角度耦合问题,提出ー种基于参考阵元的运动补偿方法。 |
Aiming at the velocity-angle coupiing problem of time division multiplexing (TDM) multple- multple-output (MIMO) frequency modulated contnuous wave (FMCW) radar, a moton compensation method based on reference-element is proposed to realize the accurate direction estimation of moving targets. |
12825 |
把MIMO阵列组合阵元TJR1等效的虚拟阵元1选定为参考阵元, 通过对参考阵元接收的2个调制周期信号进行处理,提取运动引入的相邻阵元相位差,利用该相位差构建相位补偿因子消除运动引入的相位,实现运动目标的精确角度估计。 |
The first virtual element equvalent to the combined element T1/R1 of MIMO array is selected as the reference array element. The moton-induced phase is extracted by processng the sgnals of the reference element, then the compensaton factor constructed to complete the moton compensaton of the vrtual array. |
12826 |
仿真结果和实验结果验证了该方法的有效性。 |
The simulaton results and exper results verfy the effectveness of the proposed method. |
12827 |
针对曲面共形阵列结构电磁散射特性的高效、精确仿真分析需求,提出了一种并行综合函数矩量法处理方案。 |
A parallel synthetc basis functions method (SBFM) is proposed for the efticient and accurate scattermg analysis of curved conformal array. |
12828 |
该方法是传统电磁经典数值算法ーー矩量法的一种改进形式,通过几何区域分解处理和综合 基函数的方式极大降低了算法的内存消耗,使得单机分析电大尺寸问题和大规模阵列问题成为可能。 |
SBFM is an improved approach of classcal method of moment (MoM). Based on geometrc domain decomposition and synthetc basis functions, SBFM decreases the memory cost sharply which makes it possible to analyze large scale e l ectromagnetc prob l ems in a single PC. |
12829 |
更为重要的是,针对周期阵列结构,该方法具备综合函数复用特性和多区域并行处理特性,能够大大提高算法的综合处理效率。 |
More importantly, for periodic structures, SBFM can ach i eve a rather effi ci ent state whi ch manly attributes to: 1) synthetc functions constructed for one element can also be reused for others; 2) dfferent decomposton parts can be s addressed a parallel way. |
12830 |
ー个6X11的柱面共形贴片阵列被用于验证所提方法的性能,仿真结果表明,对于周期阵列结构,该方法的计算精度与多层快速多极子算法相当,虽然计算效率略低于多层快速多极子方法,但内存消耗比多层快速多极子方法低ー个数量级。 |
Finally, a 6X11cylndr<- cal patch array used to valdate the proposed approach, and the results show that, parallel SBFM can achieve the same level of accuracy with multlleve l fast multipole a l gorthm(MEFMA). Besides, though efficiency of the proposed approach is sighty ower than MEFMA, memory cost of the proposed approach can be reduced in an order compared to MEFMA. |
12831 |
非合作雷达辐射源目标探测系统具备极高的理论研究及应用价值。 |
The target detection system based on non-cooperative radar llluminator is expected to be o high value in theoretcal research and application. |
12832 |
本文首先介绍了非合作雷 达辐射源目标探测系统的概念内涵和技术体制优势,然后总结了该领域近年来国内外研究现状,最后对比民用辐射源的外辐射源雷达系统,分析了非合作雷达辐射源目标探测系统在获取和处理信号以及检测和跟踪目标等方面面临的诸多技术瓶颈,探讨了系统同步、直达波抑制、非合作目标检测和目标跟踪等关键技术。 |
This paper introduces the concept and techncal advantages o target detection system based on non-cooperative radar lllummator. Then, research status o this field at home and abroad in recent years is summarized. Compared with passive radar system us ing civil radiation source, the techncal bottlenecks o target detection system based on non-cooperative radar lllumi- nator in s ignal acquisition, process ing, target detection and tracking are analyzed. This paper dscusses the key technologes o system synchronization, direct wave suppression, non—cooperative target detection and target track ng. |
12833 |
卫星导航信道具有宽带、时变和城区复杂多径等特征,为了能够充分挖掘、有效预测和评估全球导航卫星系统(Global Navigation Satellite System, GNSS)的性能,需要对各种环境中的卫星信道进行测量和建模研究,文中主要讨论了卫星导航信道的测量和建模及其研究进展。 |
Satellte navigation channel has the characteristics of broadband, time-varying, complex multipath in urban, etc. In order to practically enhance, effectively predict and evaluate the performance of Global Navigation Satellite System(GNSS) , it is necessary to measure and mode l the satellte channe l in the challenging environment. This paper mainly discusses the measurement and modeling of satellte navigation channel and its research advances. |