1) crest line
脊线<地>
2) ridge
[英][rɪdʒ] [美][rɪdʒ]
脊线
1.
Aiming at the shortage of wavelet transform in extracting in-pulse features from FSK signal,a united time-frequency analyse method combined with time-frequency reassignment and time-frequency ridge is introduced.
针对小波变换法在提取频率编码信号脉内特征中的不足,提出了将时频重排和时频脊线相结合的时频联合分析方法。
2.
Aiming at the poor SNR performance of wavelet-ridge in extracting in-pulse features,an novel unite method for-frequency analysis is proposed.
针对小波脊线法在提取雷达信号脉内特征时信噪比性能较差的缺点,本文基于小波变换谱,将时频重排和时频脊线相结合,提出了一种新的时频联合分析方法。
3.
Gabor wavelet spectrogram is reassigned to extract Time-frequency ridge.
通过对非线性结构响应的Gabor小波谱进行重排,从中提取出反映系统频率的时频脊线,由脊线得到非线性结构的瞬时频率和幅值,进而识别出结构响应信号的骨架曲线。
3) ridges
[英][ridʒ] [美][rɪdʒ]
脊线
1.
The frequencies and viscous damping ratios are obtained by the ridges of the wavelet coefficients.
利用小波变换时频分析的特点 ,用Morlet复小波函数对线性系统的自由振动响应进行小波变换 ,通过脊线上的小波系数进行系统识别 ,并用数值计算证实此方法的正确性 。
2.
According to the theory of Carmona,there is a simple relationship between wavelet coefficient and the original signal,and the maxima line of continuous wavelet transform locates the ridges.
根据Carmona的多脊线识别理论,连续小波变换时频平面上模极大值线所在位置就是脊线位置,其小波系数与时域信号之间存在简单的对应关系,利用Crazy Climber算法提取小波变换系数的脊,就可以重构时域信号。
4) ridge line
脊线
1.
The ridge line slopes northward with hight while southward in 160°E~180°.
西太平洋地区副高脊轴随高度向北倾斜 ,而 1 60°E~ 1 80°地区向南倾斜 ;北太平洋中、西部副高在北进期的脊线活动均存在显著的 1 0~ 2 0 d周期低频振荡 ,东亚季风区还具有明显的准 40 d振荡周期。
5) hogback ridge
[地]猪背脊
6) pressure ridge
冰压脊<地>
补充资料:脊脊
1.混乱;互相践踏。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条