| The Direction Finding Ambiguity Analysis for 3 Element and 4 Element Phase Interferometer DF System |
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Jung-Hoon Lee, Jong-Myung Woo |
1The Electronic Warfare PEO, Agency for Defense Development
2Department of Radio Science and Engineering, Chungnam National University |
| 3소자 및 4소자 위상인터페로미터 방탐시스템의 방탐모호성분석 |
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이정훈, 우종명 |
1국방과학연구소 전자전체계개발단
2충남대학교 전파공학과 |
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| Abstract |
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In this paper, we have proposed a novel method which can analysis the direction finding ambiguity analysis for array geometry in 3 channel and 4 channel multiple baseline direction finding system. Generally, the direction finding ambiguity in the 3 element and 4 element phase interferometer direction finding system is calculated by the simulation for the array spacing or by the probability with the selected antenna array spacing. There are some restrictions to obtain the ambiguity of direction finding system in these methods. The former performs a simulation with every antenna array spacing and the latter calculates the ambiguity with the selected antenna array spacing. To overcome those restrictions, This paper proposed the novel method to calculate the ambiguity using the imaginary antenna array spacing and the phase difference prior to the modular operation in direction finder. Using the proposed method, we obtain the ambiguity probability for each of array geometry composed of multiple baseline. After performing the simulation with the selected antenna array spacing to verify the proposed method, we compared the calculated result data with the simulation data. |
| Key Words:
Direction Finding Ambiguity Analysis, Multiple Baseline Direction Finding System, Phase Interferometer |
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