ID 原文 译文
9894 建立地面站对目标的量测模型,并分析量测转换误差特性,推导出对应的BLUE滤波模型; ‭Establish ground station measuring model of the target, and analyze the measurement conversion error characteristics, the corresponding BLUE filter model is deduced;
9895 针对目标从地面站上空过顶时出现无效量测的问题,通过对高程量测补偿的方法予以克服,解决传统算法在强非线性量测下误差较大的弊病。 Above your head in the sky over target from the ground station is invalid measurement problems, through the method of the compensation for the elevation measurement to overcome, to solve the traditional algorithm under the strongly nonlinear measurement error is bigger.
9896 与经典方法的性能对比表明,改进算法有效地抑制了强非线性量测下的滤波发散,有很强的鲁棒性和实时性。 ‭Compared with the performance of the classic methods show that the improved algorithm effectively suppresses the strongly nonlinear measurements filtering divergence, strong robustness and real-time performance.
9897 将跟踪雷达的目标检测策略应用于搜索雷达数据处理,提升对复杂低空空域非相参雷达图像中小弱目标的检测与跟踪能力。 Tracking radar target detection strategy was applied to search radar data processing, improve the complicated low-altitude airspace of coherent radar image weak small target detection and tracking ability.
9898 首先,根据跟踪目标的生命周期等时域特性,修正"最优分类面"中目标预估位置邻域内的分割阈值,以提高目标检测灵敏度。 First of all, based on the life cycle of tracking time domain features, such as correction "of" the optimal classification plane position of target forecast in the neighborhood of segmentation threshold, in order to improve the target detection sensitivity.
9899 然后,利用杂波在雷达图像序列中的时域特性进一步修正"最优分类面",剔除剩余杂波。 Then, using the time domain characteristics of clutter in radar image sequence further correction "optimal classification plane", to eliminate the residual clutter.
9900 最后,将本算法与已经实现的基于空域特性的杂波抑制算法相结合,分别应用于仿真和实测数据,并采用多种方法评价检测结果。 Finally, the algorithm and is implemented based on spatial characteristics of clutter suppression algorithm combining, respectively applied to the simulation and the measured data, and use a variety of methods to evaluate test results.
9901 检测结果表明,本算法能够在提高检测率的同时,进一步降低虚警率。 Test results show that this algorithm can improve the detection rate at the same time, further reduce the false alarm rate.
9902 调频连续波(frequency modulated continuous wave,FMCW)合成孔径雷达(synthetic aperture radar,SAR)具有体积小、重量轻、成本低、功耗低等优点,在精确制导领域具有较大的应用潜力。 Frequency modulation continuous wave (frequency modulated continuous wave, FMCW) synthetic aperture radar (synthetic aperture radar, SAR) has small volume, light weight, low cost, low power consumption, has great potential applications in the field of precision guidance.
9903 推导分析了弹载FMCW SAR大斜视回波信号波数域表达式,在成像预处理中,通过引入全时间距离走动校正函数,有效避免了由导弹高速运动及大斜视角观测引起的二次相位误差的产生; ‭Analyzes the missile is derived FMCW wave number domain expression of big squint SAR echo signal in the image preprocessing, by introducing the correcting time distance function, effectively avoid caused by missile high speed movement and large squint Angle observation of quadratic phase error;