ID 原文 译文
40146 实测中，本文算法8.2 ms可完成3帧数据内20个OVSF扩频码的同时识别，识别准确率在95%以上，具有很高的工程应用价值。 In the actual measurement, this algorithm costs8.2 ms to complete the recognition of at least 20 OVSF codes in three frames of data simultaneously, and the recognition accuracy is more than 95%, which has high engineering application value.
40147 为了解决多阵列中子空间数据融合（Subspace data fusion，SDF）算法自由度受限于实际阵元数与定位精度低的问题，本文利用非圆（Non-circular，NC）信号特性并结合降维（Reduced-dimension，RD）搜索思想提出了一种基于降维搜索的子空间数据融合的非圆信号直接定位算法（Reduced-dimension subspace data fusion，RD-SDF）。 To improve the traditional subspace data fusion(SDF)algorithm with multiple arrays in terms of degree of freedom(DOF)and accuracy, a direct position determination algorithm for non-circular(NC)signals with multiple arrays is proposed by exploiting the NC characteristics and the concept of reduced-dimension(RD).
40148 该算法首先利用辐射源信号的NC特性扩展空间信息，以获得增大的虚拟阵列孔径，与更多的可识别信源数。 Specifically, the NC characteristics are used to obtain the extended spatial information, which contributes to the extended array aperture and enhanced DOFs.
40149 但是由于NC相位导致的高维搜索大大增加了算法求解时的复杂度，本文引入RD搜索思想，通过数据重构消除NC相位导致的高维搜索复杂度问题，并结合SDF构造RD融合搜索谱函数。 However, this leads to the expensive high-dimension search. As a result, the concept of RD is introduced to discard the NC phase and then construct the RD spectrum search function based on SDF.
40150 仿真结果表明，相比于传统SDF算法，本文RD-SDF算法具有更高的空间自由度和定位精度。 Compared with the traditional SDF algorithm, the superiorities of the proposed algorithm in DOF and position performance are corroborated by numerical results.
40151 此外，RD-SDF算法在保证估计性能的同时显著降低了算法复杂度。 Besides, without losing the estimation performance, it significantly reduces the complexity.
40152 随着电磁环境愈发复杂，在非合作条件下，接收方对辐射源信号的识别与分析是获取电子情报的重要手段。 With the increasingly complex electromagnetic environment, for a receiver, especially in noncooperative condition, identification and analysis of emitter sources are regarded as an important method to obtain electronic intelligence.
40153 辐射源识别是利用侦察设备截获的辐射源信号，提取并分析信号的特征，进而实现对辐射源的分类和类型判断。 Emitter identification refers to the process of extracting and analyzing characteristics of emitter signals intercepted by the reconnaissance equipment. The category and type of emitters is made.
40154 它是电子对抗领域一个重要的研究方向，在无线电安全和频谱资源管控等方面具有重要的意义和广阔的应用前景。 As a momentous direction in the electronic counter measures(ECM)area, emitter identification has a significant meaning as well as a wide range of applications in radio safety and spectrum resources management.
40155 本文在分析国内外大量文献的基础上，首先说明了辐射源识别的主要特点，其次归纳了辐射源识别的类型，接着将目前辐射源识别的主要方法进行分类，并分析了辐射源识别的现状， Based on the analysis of a great deal of domestic and foreign literature, this article starts with the main characteristics of emitter identification in simplicity, then elaborates the classification and main methods of emitter identification. The actualities of emitter identification are introduced.