求翻译：作为宽带卫星通信系统中的关键技术之一，数字信道化技术在不改变有效载荷结构的前提下，不仅可以准确地提取上行链路信道中各用户的窄带信号，而且经星上中间处理后，可以重构出所需的下行链路信号。因此，对数字信道化技术进行研究具有很重要的理论意义和实用价值。在融合透明转发器和再生转发器两者优点的条件下，本文重点研究了基于星载柔性转发器的数字信道化器，其既可实现非均匀宽带信号的交换，又可实现均匀带宽信号的交换，而且其也具有结构简单高效、很好的灵活性、良好的兼容性等特点。本文的主要工作如下：是什么意思？

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As a broadband satellite communications system. One of the key technologies in channelized digital technology in the payload does not change the structure that not only can accurately extracted uplink channel in each user's narrow-band signal, and the star in the middle after processing, you can reb

One of as in wide band communication satellite system key technologies, the digital channelizing technology in does not change the payload structure under the premise, not only may withdraw in accurately the upward link channel various users' narrow band signal, moreover after star on middle process

As one of the key technologies of broadband satellite communication systems, digital channel technology under the premise of not changing the payload structure, not only can accurately extract all users of narrow-band signals in uplink channel, and star treatment, can be required to reconstruct the

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