求翻译：　已有大量关于UWB技术的性能和局限的分析，一个较普遍的误解是UWB技术是适合于所有应用的最佳设计。实际上，UWB技术最适合于拥挤的室内应用，并不适合于室外应用。因为UWB在大气环境下距离越远信号衰减越厉害。另一种误解是将UWB无线技术和冲击雷达技术混为一谈。UWB无线技术采用的脉冲和冲击雷达的脉冲相似，但传输功率大大不同。商用UWB产品将利用接收机领域的最新技术，并将以非常低的功率(mW级)进行发射。而冲击雷达，必须以极高的功率(kW级)发射信号。明晰这些区别后，我们对UWB在无线通信中应用才能有更清楚的认识。是什么意思？

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There has been a great deal about UWB technology performance and limitations of the analysis, a more widespread misunderstanding is UWB technology is suitable for all applications of the best design. In fact, UWB technology is best suited for the crowded indoor applications, and is not suitable for

　Has a wide range of performance and limitations of analysis of UWB technology, a more common misconception is best design for UWB technology is suitable for all applications. In fact, UWB technology best suited for indoor applications in crowded and is not suitable for outdoor applications. Since U