摘要：【中文】本发明属于通信技术与信号处理技术领域，公开了一种多个外辐射源下运动目标回波的DOA估计方法，对天线阵列接收到的混合回波信号进行预处理，求得信号的协方差矩阵，并提取上三角元素的实部和虚部构建为一个一维矩阵作为稀疏自编码器的输入；利用稀疏自编码器将来自不同的区域的信号进行分类；对稀疏自编码器输出的P个结果构成一个一维矩阵，再将一维矩阵转换成协方差矩阵形式，将矩阵分为实部矩阵和虚部矩阵作为双通道输入送入P个卷积神经网络；利用卷积神经网络实现不同子区域信号的DOA估计，P个卷积神经网络的输出层神经元表示P个子区域在水平方向上的角度。当信噪比大于0dB时，信噪比估计的归一化均方误差小于1。 【EN】The invention belongs to the technical field of communication technology and signal processing, and discloses a DOA (direction of arrival) estimation method for moving target echoes under multiple external radiation sources, which comprises the steps of preprocessing a mixed echo signal received by an antenna array, obtaining a covariance matrix of the signal, extracting a real part and an imaginary part of an upper triangular element, and constructing a one-dimensional matrix as an input of a sparse self-encoder; classifying signals from different regions by using a sparse self-encoder; forming a one-dimensional matrix for P results output by the sparse self-encoder, converting the one-dimensional matrix into a covariance matrix form, and dividing the matrix into a real part matrix and an imaginary part matrix which serve as double-channel input to be sent into P convolutional neural networks; and utilizing a convolutional neural network to realize DOA estimation of signals of different sub-regions, wherein output layer neurons of P convolutional neural networks represent angles of the P sub-regions in the horizontal direction. When the signal-to-noise ratio is greater than 0dB, the normalized mean square error of the signal-to-noise ratio estimate is less than 1.

摘要：【中文】本发明公开了一种滤板自动拉开机构及相应自动压滤机，所述滤板自动拉开机构主要包括液压马达、机械手、传动机构、暂停装置、压倒限位装置等，其特征在于，将分体式压倒限位装置改为一体式压倒限位装置，该压倒限位装置包括压倒过渡板、限位架、固定底板、调节螺钉和调节螺母等，结构简单。限位架的位置可根据实际情况进行前后调节，确保限位架和压倒板的安装距离精确，当拉板小车后退至限位架时，拉板小车的拨杆在压倒过渡板的作用下，回到压倒位置，此时小车后部正好碰触到限位架，抓板准确可靠、拉板快捷高效。压倒过渡板平滑过渡，拨杆在压倒的过程中受到的冲击力减小。本发明既提高自动拉板的可靠性，又缩短了间歇性空行程时间，提高了生产效率。 【EN】The invention discloses an automatic filter plate pulling-open mechanism and a corresponding automatic filter press, wherein the automatic filter plate pulling-open mechanism mainly comprises a hydraulic motor, a mechanical arm, a transmission mechanism, a pause device, a press-down limiting device and the like. The position of spacing can carry out the forward and backward adjustment according to actual conditions, ensures that spacing and the installation distance of suppressing the board are accurate, and when the arm-tie dolly retreated to spacing, the driving lever of arm-tie dolly got back to the position of suppressing under the effect of suppressing the cab apron, and the dolly rear portion just in time touched spacing this moment, and the nipper is accurate reliable, the arm-tie is swift high-efficient. The over-pressure transition plate is in smooth transition, and the impact force applied to the deflector rod in the over-pressure process is reduced. The invention not only improves the reliability of the automatic pulling plate, but also shortens the intermittent idle stroke time and improves the production efficiency.

摘要：【中文】本发明属于通信中认知无线电技术领域，公开了一种alpha稳定噪声衰落信道下多天线频谱感知方法，所述alpha稳定噪声衰落信道下多天线频谱感知方法包括以下步骤：首先对多天线接收信号进行连续采样，并形成接收信号向量；然后在此基础上计算多天线接收信号的分数低阶协方差矩阵，并由此构建两种不同的检测统计量；最后当检测统计量大于或等于检测门限时，判定主用户存在，否则判为不存在。当混合信噪比在‑8dB及以上时，本发明所提的基于两种不同检测统计量的检测方法的检测正确率均可达到100％，可见本发明具有良好的频谱感知性能。 【EN】The invention belongs to the technical field of cognitive radio in communication and discloses a multi-antenna spectrum sensing method under an alpha stable noise fading channel, which comprises the following steps: firstly, continuously sampling a multi-antenna receiving signal and forming a receiving signal vector; then calculating a fraction low-order covariance matrix of the multi-antenna received signals on the basis, and constructing two different detection statistics; and finally, judging that the master user exists when the detection statistic is larger than or equal to the detection threshold, and otherwise, judging that the master user does not exist. When the mixed signal-to-noise ratio is-8 dB or above, the detection accuracy of the detection method based on two different detection statistics can reach 100%, and the method has good spectrum sensing performance.

摘要：【中文】本发明属于无线通信中频谱感知技术领域，公开了一种非高斯噪声下MIMO系统的频谱感知方法，利用非线性核函数对观测矩阵x进行核映射，得到核空间矩阵K^x；基于核空间矩阵K^x构建检测统计量T_K；计算门限η_K，将检测统计量T_K与阈值η_K进行比较；如果T_K＜η_K，判为主用户信号存在；否则，判为主用户信号不存在。本发明可以有效实现非高斯噪声条件下MIMO系统的频谱感知，且在低信噪比条件下具有较好的性能。当信噪比高于‑10dB时，正确检测概率达到90％以上，且对于高斯噪声本发明所述方法同样具有较好的性能。可见，本发明的频谱感知效果较好。与现有算法比较，本发明所提方法的检测性能随着天线数目的增加而增加，增加天线数目可以提升算法性能。 【EN】The invention belongs to the technical field of spectrum sensing in wireless communication and discloses a spectrum sensing method of an MIMO system under non-Gaussian noise^x(ii) a Based on the kernel space matrix K^xConstructing a detection statistic T_KCalculating threshold η_KWill detect the statistic T_KAnd threshold η_KComparing; if T is_K＜η_KJudging that a master user signal exists; otherwise, judging that the main user signal does not exist. The invention can effectively realize the spectrum sensing of the MIMO system under the non-Gaussian noise condition and has better performance under the condition of low signal-to-noise ratio. When the signal-to-noise ratio is higher than-10 dB, the correct detection probability reaches over 90 percent, and the method of the invention also has the advantages of Gaussian noiseBetter performance. Therefore, the frequency spectrum sensing effect of the invention is better. Compared with the existing algorithm, the detection performance of the method provided by the invention is increased along with the increase of the number of the antennas, and the performance of the algorithm can be improved by increasing the number of the antennas.

摘要：【中文】本发明属于脉冲噪声背景下通信信号参数估计技术领域，公开了一种alpha稳定分布噪声下FSK信号参数联合估计方法，首先对接收的观测信号r(t)进行非线性映射，抑制大幅度脉冲噪声，然后提取观测信号r(t)的广义一阶循环频率集合κ，实现FSK信号的调制阶数M和频率间隔Δf估计，最后利用广义二阶循环自相关特征Ω(k,m)和频率间隔估计实现FSK信号的符号周期估计当混合信噪比高于2dB时，2FSK、4FSK和8FSK三种信号的调制阶数M估计准确率高于95％，频率间隔Δf的估计正确率高于95％，符号周期的估计正确率高于99％。可见，本发明方法在alpha稳定分布噪声下是有效可行的。 【EN】The invention belongs to the technical field of communication signal parameter estimation under the background of impulse noise, and discloses a FSK signal parameter joint estimation method under alpha stable distributed noiseSymbol period estimation for FSK signalsWhen the mixed signal-to-noise ratio is higher than 2dB, the estimation accuracy of the modulation order M of the three signals of 2FSK, 4FSK and 8FSK is higher than 95%, and the frequencyThe estimated accuracy of the interval delta f is higher than 95 percent, and the symbol periodThe estimated accuracy of (2) is higher than 99%. Therefore, the method is effective and feasible under the condition of alpha stable distribution noise.

摘要：【中文】本发明属于通信技术与信号处理技术领域，公开了一种基于神经网络的卫星外辐射源目标被动探测方法，首先利用采延迟反馈网络对含有海杂波的参考通道中卫星直达波信号进行提纯，并利用最小均方误差滤波器对回波通道中的卫星直达波信号进行自适应抑制；然后利用解耦回声状态网络对海杂波进行预测，将经过直达波抑制后的回波通道信号输入到解耦回声状态网络中，并提取解耦回声状态网络的预测值与输入值之间的差值；最后将提取到的差值进行归一化后输入到已训练的多层感知器中，进行回波信号的检测。本发明在信杂比大于‑40dB时，检测概率为100％，可见该发明对卫星外辐射源的目标被动探测是有效可行的。 【EN】The invention belongs to the technical field of communication technology and signal processing, and discloses a passive detection method of a satellite external radiation source target based on a neural network, which comprises the steps of firstly purifying a satellite direct wave signal in a reference channel containing sea clutter by using a sampling delay feedback network, and carrying out self-adaptive suppression on the satellite direct wave signal in an echo channel by using a minimum mean square error filter; then, the decoupling echo state network is used for predicting sea clutter, echo channel signals subjected to direct wave suppression are input into the decoupling echo state network, and a difference value between a predicted value and an input value of the decoupling echo state network is extracted; and finally, normalizing the extracted difference value, and inputting the normalized difference value into a trained multilayer perceptron to detect the echo signal. When the signal-to-noise ratio is greater than-40 dB, the detection probability is 100%, and the passive detection method is effective and feasible for the target passive detection of the satellite external radiation source.

摘要：【中文】本发明公开了一种滤板分组拉开与滤布逐块清洗调谐装置及相应高效压滤机，本装置包括水平调节板、三种垂直调节板、三种限位器、三种感应点；总体方案是，创新三传感组合巧妙限位、双车精确同步技术方案——设置拉板暂停、洗布定位、拉板重启三种限位，巧妙设置在首板、滤板上三种相应的感应点，设置水平调节板和三种长度不同的垂直调节板组成支撑三种限位器的可调式框架，本装置连接PLC程控系统、随洗布小车移动，三种限位器水平与垂直双向可调，使之分别有序恰好感应到相应的感应点，达到调谐混配的分组拉板小车和逐块洗布小车双车精确同步运行，高效完成分组拉板与逐块洗布。实现了高效压滤机分组拉板与逐块洗布优势互补，降本增效。 【EN】The invention discloses a tuning device for grouping and pulling of filter plates and cleaning of filter cloth block by block and a corresponding high-efficiency filter press, wherein the tuning device comprises a horizontal adjusting plate, three vertical adjusting plates, three limiters and three induction points; the device is connected with a PLC program control system, moves along with a cloth washing trolley, and is adjustable in horizontal and vertical directions, so that the three limiters can sense corresponding induction points respectively and orderly, the accurate synchronous operation of the group pulling plate trolley and the piece-by-piece cloth washing trolley by the group pulling plate trolley in a tuned and mixed mode is achieved, and the group pulling plate and the piece-by-piece cloth washing are efficiently finished. The advantages of the grouping pulling plate and the block-by-block cloth washing of the high-efficiency filter press are complemented, and the cost is reduced and the efficiency is improved.

摘要：【中文】本发明涉及一种变量程气相分子吸收池系统及吸收光谱仪，该吸收池系统是由多个吸光池构建形成的吸光池组，多个吸光池通过管路进行连接，并在管路中设置换向阀及配套管路，实现待检气体进入不同的吸光池，形成不同的光程路径，与现有技术相比，本发明可应用于不同浓度的样品测定，防止吸光度过高引起的测量信号饱和与吸光度值过度引起的测定结果准确度和稳定度差的情况，不同吸光度可通过换向阀的控制实现自动光程匹配，减少用户稀释、浓缩样品的前处理工作，可替代传统手工更换吸光池的工作。 【EN】The invention relates to a variable-range gas-phase molecular absorption cell system and an absorption spectrometer, wherein the absorption cell system is a light absorption cell group formed by constructing a plurality of light absorption cells, the plurality of light absorption cells are connected through a pipeline, and a reversing valve and a matched pipeline are arranged in the pipeline, so that gas to be detected enters different light absorption cells to form different optical path paths.

摘要：【中文】本发明公开了一种钢筋定位装置及其施工方法，所述钢筋定位装置包括框体部、移动部及滑杆，所述滑杆设置在所述框体部，所述移动部设置有限位部，所述限位部与待浇筑混凝土的配筋匹配设置；所述移动部滑动连接于所述滑杆并沿竖直方向移动，以通过所述限位部调节混凝土配筋的位置及方向。本发明提供的一种钢筋定位装置及其施工方法，其结构合理，操作便捷，通过移动部的滑动调节，有效避免了钢筋整体偏位及斜向偏位，保证了混凝土配筋的位置准确，保证了混凝土的浇筑质量；同时，该装置可循环使用，一定程度上控制了整体的施工成本。 【EN】The invention discloses a steel bar positioning device and a construction method thereof, wherein the steel bar positioning device comprises a frame body part, a moving part and a sliding rod, the sliding rod is arranged on the frame body part, the moving part is provided with a limiting part, and the limiting part is matched with a reinforcing bar of concrete to be poured; the moving part is connected with the sliding rod in a sliding mode and moves in the vertical direction, and the position and the direction of the concrete reinforcing bar are adjusted through the limiting part. The steel bar positioning device and the construction method thereof provided by the invention have the advantages that the structure is reasonable, the operation is convenient, the integral deviation and the oblique deviation of the steel bar are effectively avoided through the sliding adjustment of the moving part, the position accuracy of concrete reinforcement is ensured, and the pouring quality of concrete is ensured; meanwhile, the device can be recycled, and the overall construction cost is controlled to a certain extent.