摘要
在起伏环境中,针对判决门限设置导致的脉冲检测结果不稳定问题,提出一种判决门限自动推荐的脉冲检测方法。通过时域迭代相关法获取待分析数据包络;按类间类内方差比最小准则实现判决门限的自动推荐;根据推荐门限和检验统计量对“真脉冲”实现判决与提取。在仿真条件下,相比噪声方差法,在同一虚警概率和漏报概率下,该方法对判决环境的最低要求降低了4dB,进一步降低了起伏环境对脉冲检测性能的影响,改善了脉冲检测效果。实测数据处理结果进一步证明了该方法的可行性和有效性。
Under the fluctuation environment, to solve the stability problem of pulse detection results which is connected with the judgment threshold,a pulse detection method based on judgment threshold automatic recommendation is proposed. Firstly, the data envelopment was obtained by iterative correlated function method in time domain. Then, judgment threshold is automatically recommended according to the minimization of between-class and within-class variance ratio. Lastly, the "true pulse" is judged and extracted based on the recommended threshold and test statistics. Under the simulation condition of this paper, compared with the noise variance method, the judgment environment of the method is improved 4dB under the same false alarm probability and miss probability, which further reduces the affect of fluctuation environment on the pulse detection results, and improves the pulse detection effect. The results of test data further validate the feasibility and effectiveness of this method.
作者
郭翠玲
高丽
余立建
GUO Cui-ling;GAO Li;YU Li-jian(Shangqiu Polytechnic of Electrical,Department of Mechanical Engineering,Shangqiu 476000,China;School of Information Science and Technology,Southwest Jiaotong University,Chengdu 611756,China)
出处
《火力与指挥控制》
CSCD
北大核心
2019年第10期71-74,79,共5页
Fire Control & Command Control
基金
国家重点研发计划基金资助项目(2017YFC0804301)
关键词
脉冲检测
起伏环境
判决门限
自动推荐
pulse detection
fluctuation environment
judgment threshold
automatic recommendation
