Huang Xinxin, Zhu Sai, Liang Guanhui
Department of Electronic and Optical Engineering, Shijiazhuang Campus, Army Engineering University of PLA, Shijiazhuang 050003, China.
Sensors (Basel). 2024 Mar 16;24(6):1914. doi: 10.3390/s24061914.
The existing array antenna reliability evaluation method based on the n/k system is analyzed. As the failed T/R module's influence on the array antenna's performance is not considered, the reliability of the array antenna is overestimated. To improve the accuracy of the array antenna reliability evaluation, the performance changes caused by T/R failures in different locations are considered. The reliability evaluation method considering the performance changes is established. The performance and probability of the array antenna's state are calculated, and accurate reliability is obtained by calculating all the available state's probabilities. The complexity of the reliability evaluation method is analyzed, and the reliability evaluation method for large-scale array antennae is established. The large-scale array antenna is divided into several subarrays. The performance and reliability of each subarray are analyzed, and the array antenna's reliability is calculated through subarrays. The array antenna's performance changes are considered with the proposed method, the overestimation problem of the existing reliability evaluation method is solved, and the accuracy of the array antenna reliability evaluation is improved.
分析了现有的基于n/k系统的阵列天线可靠性评估方法。由于未考虑失效的T/R模块对阵列天线性能的影响，对阵列天线的可靠性评估过高。为提高阵列天线可靠性评估的准确性，考虑了不同位置T/R故障引起的性能变化。建立了考虑性能变化的可靠性评估方法。计算了阵列天线状态的性能和概率，并通过计算所有可用状态的概率获得准确的可靠性。分析了可靠性评估方法的复杂性，并建立了大规模阵列天线的可靠性评估方法。将大规模阵列天线划分为若干个子阵列。分析了每个子阵列的性能和可靠性，并通过子阵列计算阵列天线的可靠性。所提方法考虑了阵列天线的性能变化，解决了现有可靠性评估方法的评估过高问题，提高了阵列天线可靠性评估的准确性。
