ID 原文 译文
12014 首先在现有文献的基础上,将波形捷变方式推广到二维空间,把雷达量测的克拉美罗下限(CramerRao lower bound,CRLB)近似为量测误差协方差。 ‭First of all, on the basis of the existing literature, will wave agile method is generalized to two-dimensional space, the radar measurements of Latin America, lower limit (CramerRao lower bound, the CRLB) approximation for the measurement error covariance.
12015 由于该CRLB是关于发射波形参量的,从而把雷达跟踪的信号处理与数据处理结合在一起,通过波形参量的动态选择得到量测误差协方差的最小值。 Because the CRLB is about the launch of waveform parameters, thus the tracking radar signal processing and data processing together, through dynamic waveform parameters selection to get the minimum value measurement error covariance.
12016 从而在整个雷达跟踪过程中提高信噪比(signal to noise ratio,SNR),降低量测误差。 ‭To improve the signal-to-noise ratio in the whole process of radar tracking (signal to noise thewire, SNR) and reduce the measurement error.
12017 其次,在数据处理上,采用多传感器数据融合及粒子滤波进一步提高机动目标跟踪的精度。 ‭Secondly, on the data processing, using multi-sensor data fusion and particle filter to further improve the accuracy of maneuvering target tracking.
12018 最后,将该算法与传统的Kalman滤波、粒子滤波及只对一维空间的量测采用波形捷变的算法和交互多模型方法(interacting multiple model,IMM)进行仿真比较,仿真结果显示该算法对机动目标的跟踪精度显著提高。 ‭Finally, the algorithm with the traditional Kalman filter and particle filter and on only one dimension measurement using the algorithm of waveform agility and interacting multiple model method (interacting multiple model, the IMM) are compared, and the simulation, simulation results show that the algorithm for maneuvering target tracking accuracy improved significantly. ‭
12019 为了弥补阵列天线导向矢量失配和相位测量噪声对测向性能的影响,提出基于方向图拟合与稳健Capon波束形成技术(robust Capon beamforming,RCB)的双向迭代矢量相关测向方法。 To make up for the antenna array steering vector mismatch and phase measurement noise effect on the performance of direction finding, based on pattern matching is proposed and robust Capon beamforming (robust Capon beamforming, RCB) bi-directional iteration vector direction finding method.
12020 利用方向图与信号能量空间分布的相似性,对目标信号来波方向进行聚焦搜索; Using the pattern and the similarity of the spatial distribution of signal energy, focus on the search of target signal to wave direction;
12021 区别于传统相关干涉仪测向方法,在聚焦区间内将基于RCB的导向矢量迭代估计与相关干涉测向方法融合,在保证测向精度的前提下对目标信号方向进行双向迭代测量。 Different from traditional correlation interferometer direction finding method, the focus range will be based on RCB oriented vector iteration estimates and related interference direction-finding method fusion, on the premise of guarantee the direction finding precision bi-directional iteration measurement of target signal direction.
12022 仿真结果表明,该方法能够弥补阵列流型失配和相位噪声的影响,准确测量来波信号方向。 Simulation results show that the method can compensate for array of flow pattern mismatch and the influence of phase noise, accurate measurement to wave signal direction.
12023 在实际测向系统中,由于阵列中各阵元的相互干扰,阵列接收的噪声为空域相关色噪声,由于系统热噪声和散弹噪声的存在,导致阵列接收的噪声同时包含空域相关色噪声与白噪声。 In the actual direction finding system, due to the interference of each array element in the array, array receiving for airspace correlated color noise, due to the existence of the system thermal noise and shot noise, leading to the noise of the array receiving includes airspace correlated color noise and white noise at the same time.