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- An algorithm based on the Haar wavelet transform(HWT) was developed for blind estimates of pseudo-random code(PC) rates and symbol periods of direct sequence spread spectrum(DS/SS) signals in low signal to noise ratio environments. 为解决低信噪比下直扩信号的参数估计问题,提出了一种基于H aar小波变换实现直扩信号伪码(PC码)速率和符号周期盲估计的新型算法。
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- On maps, a cross is the symbol for a church. 在地图上，十字符号代表教堂。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- Cypress branches used as a symbol of mourning. 柏枝作为悲哀象征的柏树枝
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- We use x as the symbol for an unknown quantity. 我们用x表示一个未知数。
- The white bird is a symbol of freedom. 这白色的鸟是自由的象徵。
- The Cross is the symbol of Christianity. 十字架是基督教的象征。
- The lion is the symbol of courage. 狮子是勇武的象徵。
- The dove is the symbol of peace. 鸽子是和平的象征。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- A mark or symbol used in a writing system. 符号，字体文字系统里的符号或标记
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- The symbol for the speed of light in a vacuum. 表示真空中光速的物理符号
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史？
