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題名 | 多輻射源複雜脈波訊號之抵達時差定位法則研析=Research of TDOA Localization Techniques for Complicated Pulse Sequence of Multi-Radiation Sources |
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作者 | 邱育倫; 黃正光; 潘佑維; Chiu, Yu-lun; Hwang, Jeng-kuang; Pan, You-wei; |
期刊 | 新新科技年刊 |
出版日期 | 20150100 |
卷期 | 11 2015.01[民104.01] |
頁次 | 頁194-203 |
分類號 | 448.81 |
語文 | chi |
關鍵詞 | 抵達時差; 脈波雷達; 訊號分選; 統計直方圖; 連續小波轉換; TDOA; Pulse radar; Pulse deinterleaving; Histogram; CWT; |
中文摘要 | 利用訊號的抵達時差進行輻射源的多站台定位技術,是近年來運用日益廣泛的一種無源定位技術,但是當環境中同時存在多個目標物時,接收站台需具備訊號分選機制,才具有同時對不同目標輻射源進行時差定位的能力。本文針對多個目標物同時發射脈波雷達訊號的複雜脈波環境,設計一具有脈波分選機制的抵達時差定位系統,以期能成功同時定位多個目標物。在脈波分選機制方面,本文提出累積差值直方圖及順序差直方圖,兩種基於脈波抵達時間差統計直方圖的演算法,並進一步利用連續小波轉換的技術,推展出另一種脈波分選演算法,且較直方圖演算法有較佳之處理速度及分選性能。此外將配合電腦模擬,說明各種演算法的機制以及其性能。 |
英文摘要 | In recent years, TDOA-based multilateral localization technique is widely applied to passive radar for estimating the target location. In this paper, we investigate the localization problem in the presence of multiple radiating targets, which give rise to the scenario of complicated superimposed pulse train at each receiver station. First, we apply the cumulative difference (CDIF) and sequential difference (SDIF) histogram-based technique for the purpose of pulse deinterleaving at each station. Aware of the disadvantage of the above method, we then propose to use a newly developed pulse deinterleaving method based on the continuous wavelet transform (CWT). CWT method results in faster computational speed and better performance, as compared to the histogram-based methods. Computer simulation results are included to verify the performance for the above pulse deinterleaving methods. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。