微型电脑应用

通信干扰会导致通信质量下降，造成语音通信不清晰或通信中断，为了使水电厂应急指挥融合通信正常有序地工作，研究水电厂应急指挥融合通信短距离干扰源精准定位方法。建立融合通信链路接收信号模型，估计变换域信道，分类有用信号与噪声；识别通信干扰节点，根据干扰数据信号的强弱变化走势，初步划分干扰源区域；通过干扰源弱信号检测及处理，修正干扰源染噪信号；定位干扰源，判断干扰源候选位置，给出最终定位结果。实验结果表明，经所提方法去噪后得到的信号波形从幅值上与不含噪信号波形较为接近，所提方法能够有效去除染噪干扰源信号的噪声，定位误差在0.1 mm以内，根均方差在10%以内，满足精准定位要求。

Communication interference may lead to the deterioration of communication quality, resulting in unclear voice communication or communication interruption. In order to make the emergency command fusion communication of hydropower plants work normally and orderly, a precise location method of short distance interference source in emergency command fusion communication of hydropower plants is studied. A received signal model of fusion communication link is established, the transform domain channel is estimated, and the useful signal and noise are classified. Communication interference nodes are identified, and the interference source area is preliminarily divided according to the strong and weak trend of the interference data signal. Through the interference source weak signal detection and processing, the interference source noise signal is corrected. The interference source is located, the candidate location of the interference source is judged, and the final location result is obtained. The experimental results show that the signal waveform obtained after denoising by the proposed method is close to the signal waveform without noise in terms of amplitude. The proposed method can effectively remove the noise from the noise interference source signal, the location error is within 0.1 mm, and the root mean square error is within 10%, which meets the requirements of accurate location.