自动增益

The elementary circuit of the receiver is made up of PIN photodiode , pre-amplifier, main amplifier , automatic gain control and regeneration circuit .

光接收机的基本结构由光检测器、前置放大器、主放大器、自动增益控制电路和再生电路所组成。

Low noise amplifier ; elliptic function bandpass filters ; balanced mixer ; ultra-fine thin-film process ; automatic gain control

低噪声放大器；椭圆函数带通滤波器；平衡混频；超微细薄膜工艺；自动增益控制

Firstly the theory of the ultrasonic proximity module in new fuze is analysed. The factors which affect performance of the proximity fuze are studied.

首先分析了火箭深弹新型引信声近炸模块的工作原理，对影响引信声近炸性能的因素作了研究，着重研究了增强超声波探测收机性能的关键技术，即接收机自动增益和信号处理技术。

By means of the variable attenuator, the automatic gain control

依靠可变衰减器，自动增益控制

The technology innovation of this subject:1.On the hardware system,we adopted the PWM tenology integrating the peripheral module of MSP430 MCU to fulfil the auto-baseline regulation, which eliminate the volume of the prototype. 2.On the software system,we adopted the self-study method in differentiation of the characteristic points of photoelectric plethys-mography signal, which increased the individual adaptability effectively.

本课题的技术创新是： 1、在硬件系统上结合MSP430单片机的外围模块，采用脉宽调制技术实现了对光电容积脉搏波信号的自动增益调节； 2、在软件系统上将自学习方法应用到光电容积脉搏波特征点判别，有效地提高了样机的个体适应性

Using CPLD to deal with the incepted waveform signal can improve the precision of extraction pulse, eliminate interference effectively, it established the foundation of high precise time intervals measurement.

系统选用了高精度时间间隔测量芯片TDC-GP2用于时间的测量以及控制发射脉冲，以超低功耗的MSP430F155单片机作为系统的核心，用于控制及计算处理，并使用CPLD ispMACH4064完成了接收波形脉冲的提取和接收波形自动增益控制的功能。

Band—pass filter, improvement of isolation and AGC amplifier are also used to improve the detecting distance.

系统设计中，还采用了增设带通滤波、提高系统隔离度和自动增益控制放大的技术手段提高检测距离。

Results show that using bin to bin automatic gain control,clutter filtering,and suitable antenna tilt management,the " wet " microburst windshear can be accurately detected 80s(approximately 6km) in front of the aircraft,meeting the certification requirements proposed by FAA.

结果表明：通过单元－单元自动增益控制、杂波滤波和天线仰角控制，可提前80s（6km）探测到&湿&微下击暴流风切变，符合FAA提出的适航要求

The AGC technology in the radio frequency channel is also studied.

研究了射频信道中的自动增益控制技术。

ATHRTF Tool, Post equalization, Automatic Gain Control and more.

ATHRTF工具，邮政均衡，自动增益控制等等。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。