By analyzing the model of radio wave propagation loss , this paper provides a weighted centroid localization algorithm that uses coefficients , which are decided by the influence of beacons to unknown nodes , to prompt localization accuracy 文中通過對無線電傳播路徑損耗模型的分析,提出了加權(quán)質(zhì)心定位算法,用信標節(jié)點對未知節(jié)點的不同影響力來確定加權(quán)因子,以提高定位精度。
The thesis analyzes the transmitting characteristic of the uwa channel , derives the propagation losses , eigenrays and channel impulse responses of uwa channel by use of the kraken normal wave mode and the ray trace algorithm based on velocity - depth curvilinear profile approximation . based on the analysis , a scheme of auto - replying lduwarc system by means of spread spectrum technique has been designed 論文首先分析了遠程聲遙控信道傳輸特性,分別利用kraken簡正波和射線跟蹤模型對深海和淺海水聲信道的傳輸特性進行分析,對信道的多徑結(jié)構(gòu)、衰落和環(huán)境噪聲進行了計算,并在此基礎上設計了基于擴頻技術(shù)的自主應答式遠程聲遙控系統(tǒng)方案。