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題名 | 電偵振幅接收機系統定向精度提升研究=Improvement of DoA Estimation Accuracy of Amplitude Comparison Direction Finding Receiver in ESM System |
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作者 | 陳明仁; 陳智宏; 陳維偉; 蘇昱瑩; | 書刊名 | 新新科技年刊 |
卷期 | 11 2015.01[民104.01] |
頁次 | 頁215-223 |
分類號 | 448.813 |
關鍵詞 | 振幅比較; 接收機; 電子支援; 演算法; 來向角; Amplitude comparison; Receiver; Electronic support measures; Algorithm; DoA; |
語文 | 中文(Chinese) |
中文摘要 | 本文針對振幅比較式接收機系統之測向技術進行研究,接收機系統係以各頻道接收之電壓振幅差,進行信號來向角計算,因此在選擇硬體時,需考量天線、放大器等元件製程誤差,對於各頻道電壓振幅分布特性之影響。然而,在寬頻及寬波束之設計要求下,系統接收天線場型與電壓振幅分布,兩者之間特性不一致,實無可避免。本文提出信號強度權重資料庫比對演算法,來降低製程差異對系統之影響,以提升信號來向角定向精度。 |
英文摘要 | This paper focuses on the direction finding technology of amplitude comparison receiver. While calculating the DoA of signal, the receiver uses the difference of the voltage amplitude of each channel. Consequently, when choosing the hardware, we have to consider the process variation in antennas and amplifiers, to prevent the impact on the distribution of the voltage amplitude of each channel. However, based on the broadband and wide beam width design requirement, it cannot be avoided that the inconsistency of distribution between the antenna pattern and the voltage amplitude. Therefore, this paper proposes an algorithm based on "signal weighting" and "database comparison" to reduce the impact from process variation.Moreover, DoA estimation accuracy is also improved. |
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