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- Weak signal environment 微弱信号环境
- Development of weak signal detectors. 微弱信号检测仪的研制。
- This paper illustrates a method to de noise of radar weak signal. 通过建立尺度空间新内积、新范数的方法来构造新型小波变换 ;并且实现了用该系列小波变换对雷达弱信号去噪的目的 .
- Used in TVs frequency channel conversion or weak signal import loop circuits. 适用于电视机频道转换或小信号输入回路。
- Used in TV frequency channel conversion and weak signal input loop circuits. 适用于电视频道转换或小信号输入回路。
- First,lock-in amplifier (LIA) is used for the detection of weak signal. 利用锁相放大器进行弱信号探测。
- How to indentify weak signals rapidly? 如何快速捕获弱信号?
- The signal environment of ECM is more and more complex, so frequency measurement methods must be high-speed and precise in broad frequency band. 面对日益复杂的电子战环境，要求必须在很宽的带宽范围内，对频率信息进行快速、高精度的测量。
- In modern EW(Electronic Warfare), the using of radar and ARM makes the electromagnetic signal environment more and more complex and dangerous. 在现代电子战背景下，雷达及反辐射导弹等武器的大量使用，形成了复杂多变且具有严重威胁的电磁环境。
- The composition of Electro-Optic Signal Environment (EOSE) may reflect directly the electromagnetic situation of EO spectrum in the battlefield. 摘要战场光电信号环境的构成最直接地反映了战场光电频谱的电磁态势。
- Windows Media Center cannot find, or seek, a radio frequency that has a weak signal. Windows Media Center无法找到或搜寻到信号微弱的广播频率。
- They may be compared to the weak signal coming in over a long-distance telephone line. 它们可以比做经过远距离电话线而来的弱信号。
- Your computer is tuned to a frequency that is not available or has a weak signal. 您的计算机调到不可用的频率或信号微弱。
- Introduction : THE LNA is the block entrusted to amplify the weak signal received by the antenna in a reception system. 就是所谓的低噪声放大器，它决定手机接收机的整体性能；
- This paper make use of the method of lock-in amplifying to pick up the weak signal from noise. 文中利用锁相放大的方法将此微弱的电压信号从噪声中提取放大,解决了声表面波陀螺的信号放大问题。
- The measurement by applying parameter sensitive of chaotic theory is a newer way of weak signal measuring. 而利用混沌的参数敏感性来进行微弱信号测量是一种比较新的测量方法。
- A detailed investigation is given on the method of the general radar signal and the jam signal sorting and identification of ARRS in the complicated spatial signal environment with the aid of . 本文详细介绍了反辐射导引头在复杂的空间信号环境中对于常规雷达信号和干扰信号分选与识别的方法。
- Constant directivity beamforming is a useful technique for special filtering in broadband signal environment, but the size of the array is related to the lowest frequency of the operation. 在宽带信号环境下,恒定指向性波束形成是一种非常有用的技术。但是阵列的尺寸与最低的操作频率有关,因此,对于低频信号不适合用恒定指向性波束形成技术。
- Modulus maxima of the detail signal after lifting in every operation cycle is extracted, and the position and time while weak signal singularity occurs are found. 提取提升后小波分解的高频细节信号在每个信号工作周期中的模极大值，来确定信号发生微弱突变的时刻和位置。
