...抗多径干扰能力，即当 多径时延小于保护间隔时，系统不受ISI （码间串扰）的困扰，因此允许单频网络（Single Frequency Network）用于宽带OFDM系统，依靠多天线来实现，采用由大量低功率 发射机组成的发射机阵列消除阴影效应，实现完全覆盖。
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“2k模式”适用于单一发送器操作与具备有限发送器距离的小型单频网络。
"The" 2k mode "is suitable for single transmitter operation and for small single frequency networks with limited transmitter distances."
其中单频网技术的关键问题主要包括单频网的网络规划、单频网的组网模式、覆盖重叠区的接收性能以及单频网中的节目分配网络等等。
The key issues of single frequency network technology includes network planning, networking mode, performance of overlapping coverage of the reception area, and program distribution network and so on.
与现有方法相比，新方法可采用单频gps数据实现中长基线GPS网络rtk的整数模糊度快速解算。
Compared with the existing methods, the improved method can solve the ambiguities of the medium-long baseline GPS network RTK only using L1-frequency GPS data.
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