Optic cable is ideal when wide band transmission channel is required to implement realtime dual transmission of bureau, mine remote picture and image.
局、矿远程图形、图象实时双向传输需要宽频带的传输信道，光纤光缆信道是理想的选择。
The requirements for the wide band services in a up stream channel are fist studied, and used as the criteria to compare the transfer ways each other used in up stream channel.
论文首先探讨了宽带业务对上行信道的要求，以此作为比较上行信道的传输方式优劣的标准。
Based on an auxiliary time-delay channel and ESPRIT approach, a new algorithm for wide band frequency estimation with sub-Nyquist sampling was proposed.
为了克服现有的欠采样频率估计方法存在的算法复杂、工程实现困难等问题，本文提出了一种基于虚拟仪器的三采样率切换的频率估计方法。
Based on an auxiliary time-delay channel and ESPRIT approach, a new algorithm for wide band frequency estimation with sub-Nyquist sampling was proposed.
为了克服现有的欠采样频率估计方法存在的算法复杂、工程实现困难等问题，本文提出了一种基于虚拟仪器的三采样率切换的频率估计方法。
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