摘要
为解决侵彻引信加速度信号目标特征中干扰叠加程度没有定量衡量标准的问题,提出衡量多层加速度信号目标特征中干扰叠加程度的层系数和层间系数两组指标。针对仿真或实测的加速度信号按照侵彻层数分段,逐点相减并累和差值绝对值的方式,计算出每层加速度信号的层系数和层间系数,两组指标越大,信号中干扰叠加程度越严重。利用对仿真及实测数据评价指标的计算结果说明评价指标有效性:通过对3组数据层系数和层间系数计算得出,目标特征中干扰信号叠加程度越低,层系数和层间系数越小,反之越大;另一组数据为同一发战斗部上两路起爆控制电路加速度信号的评价指标计算结果,层系数和层间系数差异均在5%以内,计算结果与定性分析、频谱分析结果一致。实验结果验证了层系数和层间系数两组指标对侵彻加速度信号目标特征中干扰叠加程度评价的有效性。
The evaluation indexes of layer and inter-layer coefficients for the signal superposition degree is presented to solve lack of measurement criterion of inter-layer superposition in multi-layer penetration acceleration signal.The test and simulated signals are segmented by penetration layers.The layer and inter-layer coefficients of acceleration signal for each layer are calculated by subtracting every amplitude of signal points by former one and summing the absolute values of difference values.The larger the two sets of evaluation indexes are,the more severer the superposition degree is.The calculated results of test and simulated signals are used to demonstrate the efficiency of evaluation indexes.The calculated results of layer and inter-layer coefficients in 3 sets of data show that the layer and inter-layer coefficients are smaller if the disturbance superposition degree is lower,and vice versa.One set of data is extracted from the calculated results of evaluation indexes of acceleration signal for two detonation control circuits in one penetration warhead,and the calculated deviation is less 5%.The calculated result is consistent to the results of qualitative analysis and spectral analysis.The experimental results show that the layer and inter-layer coefficients are efficient for evaluating the disturbance superposition degree in multi-layer penetration acceleration signal.
作者
马孟新
李蓉
牛兰杰
MA Mengxin;LI Rong;NIU Lanjie(Xi’an Institute of Electromechanical Information Technology,Xi'an 710065,Shaanxi,China;Science and Technology on Electromechanical Dynamic Control Laboratory,Xi'an 710065,Shaanxi,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2022年第1期20-28,共9页
Acta Armamentarii
基金
国防“973”计划项目(613250)。
关键词
侵彻引信
干扰信号
叠加程度
评价指标
penetration fuze
disturbance signal
superposition degree
evaluation index
