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channel mismatch error
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  相似匹配句对
     Cancellation of Mismatch Error in Microwave Dual-channel Phase Shift Measurement
     微波双通道相移测量中失配误差的对消
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     Channel
     水道,海峡,航道
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     Channel Estimation Error of MISO Systems
     MISO系统信道估计误差的影响比较
短句来源
     The Effect of Channel Mismatch on the Performance of Adaptive Array
     通道失配对自适应阵列性能的影响
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     ERROR PERFORMANCE FOR HIGH Bit RATE CHANNEL
     高比特率通道的误码性能
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A novel space time adaptive monopulse direction finding technique is proposed in this paper for airbrone phased array radar,which exhibits high accuracy performance and is robust when random array element errors(gain and phase) and channel mismatch errors exits. A robust gain normalization method for adaptive sum and difference beams is also given, together with the simplified compatible realization schemes for the above method. Finally, some results based on high fidelity simulated radar clutter...

A novel space time adaptive monopulse direction finding technique is proposed in this paper for airbrone phased array radar,which exhibits high accuracy performance and is robust when random array element errors(gain and phase) and channel mismatch errors exits. A robust gain normalization method for adaptive sum and difference beams is also given, together with the simplified compatible realization schemes for the above method. Finally, some results based on high fidelity simulated radar clutter data are provided for illustration.

针对机载相控阵雷达系统提出了一种空时二维自适应单脉冲测角方法 ,当存在阵元和通道幅相误差时它仍具有较高的测角精度。还给出了一种稳健的自适应和、差波束增益归一化方法 ,并讨论了所提方法的简化兼容实现方案。最后给出了基于高保真雷达杂波模拟数据的仿真实验结果

The time-interleaved ADC structure is one way to increase the sampling rate. However, channel mismatch errors of this structure will increasingly degrade the performance of the whole system. For this reason, adding test signal is widely used when measuring and calibrating the mismatch errors. This paper propose a method which measure mismatches without the need of any special calibration signal and therefore has wide applications. Furthermore, the method of error estimation of blind...

The time-interleaved ADC structure is one way to increase the sampling rate. However, channel mismatch errors of this structure will increasingly degrade the performance of the whole system. For this reason, adding test signal is widely used when measuring and calibrating the mismatch errors. This paper propose a method which measure mismatches without the need of any special calibration signal and therefore has wide applications. Furthermore, the method of error estimation of blind algorithm is improved. The computer simulations show that the method estimates errors with high accuracy and can improve the performance of the system effectively.

并行时间交替采样结构是一种有效地提高采样率的方法,但在采用此结构的采集系统中,多个ADC通道间的失配误差严重影响采集系统的性能,国内外对失配误差的测量和校正多采用加测试信号的方法。该文通过理论分析得出一种不需要测试信号且适用信号范围广泛的误差测量算法,并对国外文献中盲算法估计时间误差的方法进行了改进。计算机仿真证实了该方法对误差的估计有极高的精确度,能有效地提高采集系统性能。

A new method of two-dimensional DOA (Direction of Arrival) estimation for low frequency sound source with the non-typical vector acoustic intensity array of small size is proposed. This array consists of 4 sensors on the 3 orthogonal axes, so as to measure the 3 components of the vector acoustic intensity. The azimuth and pitch angles of the sound source can be estimated from the 3 intensity components. The estimation errors, including the finite difference approximation error (FDAE), the instrumentation channel...

A new method of two-dimensional DOA (Direction of Arrival) estimation for low frequency sound source with the non-typical vector acoustic intensity array of small size is proposed. This array consists of 4 sensors on the 3 orthogonal axes, so as to measure the 3 components of the vector acoustic intensity. The azimuth and pitch angles of the sound source can be estimated from the 3 intensity components. The estimation errors, including the finite difference approximation error (FDAE), the instrumentation channel mismatch error (ICME), and the error caused by ambient noise, are studied systematically. Experiments conducted in semi-anechoic chamber show that, after correcting the FDAE and ICME, the precision of DOA estimation in isotropic ambient noise is about 1o. Both theoretical analysis and experimental results validate the effectiveness of this method.

该文提出了应用3轴4元非典型声强向量阵在小尺度平台上对低频声源全空间定向的方法。该方法用四只传感器测量声强向量的3个正交分量,根据3个分量的几何关系来解出目标的方位。文中基于声信号的空间互谱分析,给出了声强向量阵的定向原理,并系统分析了其定向误差,包括有限差分误差、通道失配误差和环境噪声引起的误差。半消声室实验结果表明,在校正系统误差后,尺度为0.1m的非典型声强向量阵在各向同性噪声中的定向误差在1°左右,证实了该方法是可行的。

 
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