low level receiver 中文意思是什麼
low level receiver
解釋
低電平接受器-
The lna is one of the most important and broad components in microwave communication system receiver, and is used to amplify the low level signal. as the first signal processing block after the antenna, the lna determines the noise figure and input voltage swr and greatly impacts the dynamic range
低噪聲放大器（ lna ）廣泛應用於微波接收系統中，是重要器件之一，主要用來放大低電平信號，由於是自天線下來第一個進行信號處理的器件， lna決定了整個系統的噪聲性能和電壓駐波比vswr ，並對動態范圍有著較大的影響。 -
With the development of network and multimedia technology, the application of the network video monitor system is more and more extensive. however, the network video monitor system often cannot adapted well to the high real - time requirement, and low - level efficiency of the video streaming transmission cannot satisfied the system requirement. all of the shortcoming limited the development of the network video monitor system all the time. the development of streaming media technology gives a chance to better solve this problem. we can send the sustained encapsulated video data stream to receiver according to the gradation of time by use of streaming media technology, and the receiver can play video streams received from network. it can improve systematic real - time character through adopting this method
而一直以來網路監控系統的實時性不高和視頻數據的網路傳輸效率低下等缺點限制了它的發展。流媒體技術的興起較好的解決了這個問題，它將連續視頻流封裝后按照一定的時序要求發給接收端，保證接收端可以一邊接收數據一邊實時播放，提高了系統的實時性。本文以網路視頻數據流為對象，研究了將流媒體技術應用於現代網路監控系統中的技術和實現方法。
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