The tv goniometer is the ground control equipment of a model of anti - tank missile . it uses two ccd cameras and the signal extraction method of background counteract , which can make the guiding process of anti - tank missile wo n ' t interfered by sunlight , firelight of battle field , light , flame tracer etc . it can greatly improve the anti - interfering ability of the anti - tank missile system 該電視測角儀是某型反坦克導彈武器系統(tǒng)的地面控制設備,它采用兩個ccd攝像機和背景抵消的信號提取方法,可使反坦克導彈的制導過程不受太陽的反光、戰(zhàn)場的火光、燈光、曳光彈等干擾。
An automated de - noising algorithm based on the energy of wavelet packet not donoho ' s threshold algorithm is established . a gear feature vibration signal extraction method using the wavelet packet energy is proposed , which can separate gear meshing vibration , noise vibration and gear fault vibration signal from the original gearbox case vibration signal . basis pursuit ( bp ) algorithm is introduced into the filed of mechanical signal de - noising and feature extraction for the first time 第三章擺脫了donoho的閾值消噪思想,從能量的角度建立了基于小波包的自動消噪算法;提出基于小波包能量分布的齒輪故障特征信號提取方法,可以將齒輪嚙合振動信號、干擾振動信號以及故障沖擊振動信號從原始齒輪振動信號中分離出來;首次將基追蹤消噪算法引入到機械故障信號的消噪與特征提取上,通過對齒輪故障信號的消噪,表明了它的有效性,并對影響該方法實際應用效果的因素進行了全面的分析,同時也指出了該方法存在的局限性。