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- Weak Sine Signal Detection Based on Change of Phase Trace 基于相轨迹变化的微弱正弦信号检测
- The Application of the Chaotic Oscillator to the Weak Sine Signal Detection in Strong Noise Based 混沌振子用于强噪声下微弱正弦信号的检测
- weak sine signal detection 微弱正弦信号检测
- Whole frequency detection method of the weak sine signal 微弱正弦信号的全频域检测方法
- When the square wave signal pass the LPF,we can get the sine signal. 经过分析可知,检测过程中的低通滤波器对检测的精度和速度有重要影响。
- The interface method in digital circuitry part and the weak signal detection technique in analogy circuitry part are analyzed in detail. 详细分析了数字电路部分的接口技术和模拟电路部分中的微弱信号检测技术。
- According to the measurement demand of weak photoionization signal, a new kind of photoionization signal detection instrument is developed. 摘要根据微弱光电离信号的检测需要,开发出光新型离子化信号检测仪。
- The principle and the weak signal detection technology of EKL are introduced, and the revelation obtained from EKL is also discussed in this paper. 文章介绍了该仪器的测量原理、微弱信号检测技术。
- Easy verification of signal detection by the indicator. 通过指示器非常方便检测。
- These experiments of al extendibility, which are designed by myself and validated successfully, further verify the effectiveness of Weak signal detection theory. 这些自行设计并成功验证的功能拓展实验进一步验证了微弱信号检测理论的有效性。
- The principle of utilizing digital correlation method to detect the phases of the two sine signals with the same frequency was discussed. 介绍了采用相关分析法测量两路同频率正弦信号相位的数字化方法基本原理。
- The DDS, Direct Digital Synthesizer, which is implemented by a unique FPGA IC, can provide the stable sine signal with digital AM, FM, ASK, PSK modulation. 仅用单片FPGA就实现了直接数字频率合成技术(DDS),产生稳幅正弦波,并在数字域实现了AM、FM、ASK、PSK等四类调制信号。
- It is pointed out that continuous wavelet tr ansform(CWT) has powerful ability for weak signal detection which help itself to be used for fault diagnosis. 通过分析指出,连续小波变换具有很强的弱信号检测能力,非常适合故障诊断领域。
- The correctness of the condition is verified through extracting the little wave transients overlapped on the sine signal by shifting the time center of the transients. 通过改变微小波形的时间中心相对于正弦信号的位置提取正弦信号中叠加的微小波形,验证了小波消失条件的正确性。
- Abstract: It is pointed out that continuous wavelet transform(CWT) has powerful ability for weak signal detection which help itself to be used for fault diagnosis. 摘 要: 通过分析指出,连续小波变换具有很强的弱信号检测能力,非常适合故障诊断领域。
- At the same time, the sine signal which intermixes noise is detected, and the precision and affecting factors of phase difference measurement are analyzed. 针对混有噪声的正弦信号,分析了检测精度及影响精度的因素。
- Busy signal detected at remote site on callback. 在远程站点回拨时检测到了占线信号。
- These experiments of functional extendibility, which are designed by myself and validated successfully, further verify the effectiveness of Weak signal detection theory. 这些自行设计并成功验证的功能拓展实验进一步验证了微弱信号检测理论的有效性。
- To consider space weak signal detection in communications recon, a new signal detection method based on High-Orde Cumulant associated with matched filter is presented. 摘要针对通信侦察中的空间弱信号检测问题,提出了一种基于高阶累积量和匹配滤波器相结合的信号检测新方法。
- The processing technique based on double channels of perpendicular retains information of the range and phase of signal. The no theory error measurement of audio sine signal active power with this method is achieved. 正交双通道处理技术保留了信号的幅度和相位信息,用这种方法可以实现无理论误差地测量音频正弦信号有效功率。