ID 原文 译文
48966 最后,利用实际空间碎片轨道根数和雷达散射横截面积数据,仿真比较了匹配搜索方法与常规搜索方法的探测效能,结果表明,匹配搜索方法对于低轨空间碎片的探测效能远高于常规搜索方法,对空间监视相控阵雷达搜索策略和资源管理方法的研究具有重要意义。 Finally, using the actual number of space debris orbit and radar scattering cross-sectional area data, the simulation comparison of the matching search method and conventional search methods detection efficiency, the results show that the matching search method for Leo space debris detection efficiency is much higher than conventional search method, the space surveillance phased array radar search strategy and resource management method of the research is of great significance.
48967 在解决三维电磁散射问题时,随着入射波角度的变化,传统的矩量法需针对每个角度分别计算该入射波照射下散射体表面的电流系数。 In solving the problem of 3 d electromagnetic scattering, as the change of incident Angle of wave, the traditional method of moments to be calculated separately for each Angle when the incident wave irradiation scattering coefficient on the surface of the body surface current.
48968 对于求解宽角度下的电磁散射问题,该算法需反复运用迭代求解,运算量大,效率相对较低。 For solving electromagnetic scattering problem under the wide Angle, repeatedly using iteration, the algorithm computational complexity is big, efficiency is relatively low.
48969 为此,引入压缩感知技术来求解宽角度下的三维电磁散射问题,利用稀疏转换基和观测矩阵对数据进行稀疏表示和观测,通过数次观测所得的值再采用恢复算法即可重构出所需全部入射角度下的电流系数值。 To this end, the compression perception technology are introduced to solve the wide Angle of 3 d electromagnetic scattering problem, and observation of sparse transformation matrix to sparse representation and observation data, the values obtained by several observations and then USES the recovery algorithm can reconstruct the required all incident angles under the current coefficient value.
48970 利用该方法计算所得结果与传统算法得到的结果一致,在不影响计算精度的同时可减少运算时间,降低计算复杂度。 This method is used to calculate the results results are consistent with the traditional method, in does not affect the calculation accuracy and can reduce the operation time, reduce the computational complexity.
48971 基于混沌相位编码信号在相关性和随机性等方面的良好特性,提出了一种用混沌相位编码信号提高多输入多输出(multiple-input multiple-output,MIMO)雷达多目标检测性能的方法。 Based on chaos phase coded signal correlation and randomness in good properties, this paper proposes a with chaotic phase coded signal multiple input multiple output (multiple - input multiple output, MIMO) method of the radar multi-target detection.
48972 取不同初始值代入混沌映射产生不同的混沌序列;通过均匀量化、四相编码得到混沌相位编码波形。 Different initial value generation into the chaotic mapping to produce different chaotic sequence;Chaos is obtained by uniform quantization, four phase encoding phase coding waveform.
48973 通过多脉冲压缩累积有效降低混沌波形的互相关和自相关旁瓣,使得输出结果具有较低的旁瓣峰值,从而提高了MIMO雷达对多目标检测的性能。 Through multiple pulse compression accumulation effectively reduce the chaotic waveform cross-correlation and autocorrelation sidelobe, makes the output has lower sidelobe peak, so as to improve the performance of the MIMO radar for multi-target detection.
48974 最后的仿真结果表明了该方法的有效性。 Finally the simulation results show the effectiveness of the method.
48975 利用正负频率步进信号特殊的信号波形,提出了一种复合测速算法。 Using special signal waveform of the positive and negative stepped frequency signal, this paper proposes a composite algorithm of speed.