4 the leaked triangular wave of fmcw millimeter - wave radar has been analyzed 整个接收机中频放大倍数为25000倍, 88db 。
It can restrain the strong interference signal - leaked triangular wave and is able to substitute the agc to some extent 压缩网络的带宽为imhz ,压缩动怂范围为80db 。
The typical control methods for apf such as triangular wave modulate , hysteresis control and timing control , etc , these methods all have some demerits 而有源电力滤波器常用的控制方法为三角波调制、滞环控制和定时控制等常规的pwm控制法,这些方法均存在一定的不足。
The three - phase spwm pulses are generated through sine wave compared with triangular wave . during design , we make use of a changed structure of nco ( numerically controlled oscillator ) to 数字化设计是本系统的特点,系统最终生成的三相spwm脉冲是基于三相正弦调制波和三角载波比较得到的。
( 2 ) the properties of displacement measurement based on self - mixing interference are mathematically analyzed . first , how the external phase influences upon the output frequency , intensity , power and line - width is discussed . then , the output signal ' s properties modulated by four waves , including sine wave , square wave , triangular wave and saw tooth wave , is discussed ( 2 )通过数值分析讨论了自混合干涉位移测量系统的基本特性,包括外腔相位对输出光频、输出强度、输出功率、谱线宽度的影响,以及正弦波、方波、三角波、锯齿波调制反射体位移时输出信号的特点。
The experiment apparatus has been developed , which is based on software ( labview ) and hardware ( pci board ni 6024e ) . the displacements and generative force at the tip of the ipmc actuators were measured with respect to the different voltages , frequents and various waveforms which include square , sinusoidal , and triangular wave 实验选取了不同电压幅值,不同频率的方波、三角波、正弦波三种波形作为电激励信号,利用高速摄像记录ipmc的位移变形,并通过力传感器实测了ipmc试样末端的输出力。
The adaptive signal processing technology is a rising science embranchment , which composed with many subjects and fields . in this paper , application of the adaptive filter to elimination of the leaked triangular wave and the adaptive signal processing of the fmcw millimeter - wave radar system is studied thoroughly . the use of an adaptive filter offers an attractive solution to the problem as it usually provides a significant improvement in performance over the use of the conventional methods 在系统的自适应信号处理研究中,系统实现采用称为自调谐滤波器的自适应对消器,结果表明,在自适应过程结束后,利用该方案可以得到和原始携带信息的理想干弦波十分近似的正弦波输出,其误差是一个具有很小振幅的随机过程,具有很好的滤波效果。