jamming power density 中文意思是什麼
jamming power density
解釋
干擾功率密度-
Then we introduce pulse position modulation ( ppm ) using pn code and analysis its multi - access performance, system capacity and power spectrum density. on the basis of those analyses, we study the pulse shape and the anti - jamming ability of the system. at last, multiple access with pseudochaotic time hopping is introduce
本文首先闡述了uwb脈沖通信系統的基本原理,重點介紹了用偽隨機碼跳時的ppm (脈沖位置調制)調制,分析了他的多址性能、系統容量和功率譜密度,在此基礎上研究了改進性能的發射信號形狀和系統抗干擾能力,最後介紹了偽混沌碼跳時的多址方式。 -
Spread spectrum technique, which can handle variable adverse environments, exhibits unique qualities that have a number of advantages in anti - jamming, anti - noise, reduction of multi - path interference, low power spectral density, privacy, selective addressing and code division multiplexing
擴頻通信技術具有優越的抗干擾、抗噪音、抗多徑衰落性能,能在低功率譜密度下工作,具保密性、可多址復用和任意選址,能有效克服各種惡劣的通道特性,目前廣泛應用於移動通信、雷達、導航、測距、電力線通信等領域。
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