摘要
小波变换是具有传统傅里叶变换所不具备的时域分析的一种数据处理方法。针对雷达上的LTCC基板在工作过程中因环境复杂、所承受加速度信号中频率成分复杂、信号频率跨度较大以及加速度g值高等特点,使用Mallat方法对加速度信号进行不同频率的剥离,分离出关于基板工作时的有效数据,获得过载信号时长约为0.17 s,加速度值约为7.5 g。该方法不仅能表述加速度信号在频域的特点,还能表述时域特点。小波变换处理的数据为基板装配及缓震的设计提供了参考。
Wavelet is a data processing method for time domain analysis that has some characteristics different from FFT. To solve the problems of complicated frequency composition, large range of frequency and high-g acceleration in LTCC substrate on radar, the paper presents the method of Mallat to detach the effective data from different frequency when LTCC substrate is working. The the time of over-loaded signal obtained is about 0.17 s and the acceleration is about 7.5 g. This method can not only represent the characteristics in time domain but also represent the characteristics in frequency domain. The data processed by wavelet proves to be valuable for the package and cushion design of LTCC.
作者
时璇
马其琪
SHI Xuan MA Qiqi(China Electronics Technology Group Corporation No.2 Research Institute, Taiyuan 030024, Chin)
出处
《电子与封装》
2017年第1期35-37,共3页
Electronics & Packaging
作者简介
时璇（1983-），男，山西太原人，工程师，2006年毕业于中北大学，现就职于中国电子科技集团公司第二研究所微组装中心。
