查詢結果分析
來源資料
相關文獻
- 非線可適性預估器在GPS接收機窄頻抗干擾信號處理之應用
- Rotation-based Interpolation Lattice Filters for Interference Suppression in Spread Spectrum Communication Systems
- Design of Intelligent GPS Receivers in Kinematic Environments
- A New Least-Squares Design Technique for Two-Channel Perfect-Reconstruction FIR Filter Banks with Low System Delay
- Nonlinear Acm Filters for Narrowband Interference Suppression in Spread Spectrum Systems
- A New Method for Design of Variable Fractional-Delay (VFD) FIR Digital Filters by Semidefinite Programming (SDP)
- 時域內插用任意延遲全通濾波器之設計
頁籤選單縮合
題 名 | 非線可適性預估器在GPS接收機窄頻抗干擾信號處理之應用=Narrowband Interference Suppression in GPS Receivers Using Nonlinear Adaptive Predictors |
---|---|
作 者 | 毛偉龍; | 書刊名 | 明志學報 |
卷 期 | 35:1 2003.06[民92.06] |
頁 次 | 頁33-39 |
分類號 | 448.51 |
關鍵詞 | 全球定位系統接收機; 窄頻干擾; 管線式回授類神經網路; 延遲濾波器; Global positioning system receiver; GPS; Narrowband interference; Pipelined recurrent neural network; Tapped delay line filter; TDL; |
語 文 | 中文(Chinese) |
中文摘要 | 全球定位系統接收機已被廣泛使用在各種商用與軍用的系統中,而在通訊中干擾信號的發生是無法避免的。本研究針對兩種窄頻帶信號(即單頻干擾與掃頻干擾)環境下,利用非線性可適預估器來達成抗干擾的成效。非線性可適濾波器包含管線式回授類神經網路與延遲濾波器兩個部份。我們利用梯度下降演算法與最小平方平均演算法來即時調整其權重參數。模擬結果可知我們提出的方法可比傳統的線性濾波器法得到較好的信號雜訊改善比。 |
英文摘要 | Commercial global positioning system (GPS) receivers are susceptible to be jammed due to the presence of interference signals. In this paper, two kinds of jamming signals are investigated: (a) continuous wave interference (CWI) and (2) swept CWI. A nonlinear adaptive predictor (NAP), which consists of two subsections: a pipelined recurrent neural network (PRNN) and a conventional tapped delay line filter, is used to suppress the narrowband interference signal. The gradient descent (GD) and least mean square (LMS) algorithms are adopted to update the synaptic weights. Simulation results show that our method can indeed achieve a superior signal-to-noise ratio (SNR) performance relative to the conventional linear adaptive filter. |
本系統中英文摘要資訊取自各篇刊載內容。