First please make sure the useful signal has very good snr before you input it to amplifiers chain , then you can calculate how much gain and nf you need to get the targeted signal amplitude and noise level , based on this you can choose the right components to design amplifiers chain 后才将其输入放大器链,接着计算获得目标信号振幅和噪声水平所需的增益与nf的大小,最后根据这些数据选择合适的器件设计放大器链路。
Peaks at similar mass - to - charge ratios ( clusters ) are identified across spectra ( figure 2 ) and relatie signal amplitude differences are compared using sophisticated pattern recognition software to identify expression patterns that uniquely characterize specific diseases or conditions 质谱图中具有相似质荷比的峰(群)及相对信号强度的差异可以通过高级模式识别软件分别得到鉴定和比较,从而鉴定出某一特定疾病或身体状态的独特蛋白表达模式。
The results indicate that the soliton amplitude slightly decreases in the border between the single - mode fiber ( smf ) and the dispersion compensation fiber ( dcf ) , but and its shape remains unchanged , while its signal amplitude is amplified when it passes an amplifier and its shape automatically restored 研究表明,在普通光纤与色散补偿光纤的交界处,孤波的幅度有所降低,但其形状保持不变;光孤子通过放大器后其幅度得到放大,其形状将自动得到恢复。
The effects of the variations of the initial signal proteins concentrations on the output of this system are also studied . the study demonstrates that the jak - stat signaling pathway is robust with respect to its signal time and signal duration , but sensitive with respect to its signal amplitude 我们主要考察了细胞信号转导过程中三个重要的特征量的变化,即“信号时间” signal time “信号持续时间” signal duration以及信号幅度signal amplitude 。
The system accomplishes ultrasonic pulse transmitting and receiving , signal amplitude adaptive adjusting , data acquiring , echo searching , data processing and analyzing . different algorithms for echo searching , filtering and time difference measuring are proposed based on the thorough analysis of ultrasonic echo signal 研制的超声波液压测量系统由超声波探头、超声波收发系统、高速数据采集系统和计算机构成,实现了超声波信号的发射、接收、自动增益控制、数据采集、自动搜索回波、数据处理、分析等功能。