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本文采用模糊方法优经了频率分集制雷达的可靠性数学模型,引入适当隶属度拓展系统状态变量取值,充分考虑了部分冗余单元失效对系统性能退化的影响,给出了具体的计算公式及改善因子,并结合实例子分析结果表明了本文所提出的方法是有效可行的。 相似文献
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针对识别效果评估,选取了评估指标及测度方法,将模糊聚类分析引入识别效果评估,建立了一种开放的评估模型,该模型可以给出客观的、定量化的评估结果。最后,结合实测数据完成了仿真。 相似文献
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The non-fluctuating target detection in low-grazing angle using multiple-input multiple-output(MIMO) radar systems was studied, where the multipath effects are very abundant. The performance of detection can be improved via utilizing the multipath echoes. First, the reflection coefficient considering the curved earth effect is derived. Then, the general signal model for MIMO radar is introduced for non-fluctuating target in low-grazing angle. Using the generalized likelihood ratio test(GLRT) criterion, the detector of non-fluctuating target with multipath was analyzed. The simulation results demonstrate that the MIMO radar outperforms the conventional radar in non-fluctuating target detection and show that the performance can be enhanced markedly when the multipath effects are considered. 相似文献