Averaging Methods for Enhancing the Performance of DOA Estimation Under the Rotor Effect 


Vol. 37,  No. 12, pp. 1245-1255, Dec.  2012


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  Abstract

There are various anti-jamming algorithms for the GNSS system which is vulnerable to jamming, and the methods using array antenna show the best performance. Among them, the DOA estimation algorithms to identify the location of the jammer is very important. However, in case of the rotorcraft, the wireless channel which amplitude and phase changes with time is generated by the rotation of the rotor and it affects the performance of existing anti-jamming algorithms. In this paper, we modeled the effect of the rotor in four scenarios according to the correlation of antennas and assured that the performance of DOA estimation algorithms are degraded and saturated regardless of JNR due to the rotor effect. When we use the averaging method to solve this problem, the performance is improved as increasing samples for estimating. And in case of using moving average method with averaging, it shows similar performance. In addition, it reduces the required memory and moderates the variation of DOA estimation.

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  Cite this article

[IEEE Style]

S. Yun, J. Oh, J. O. Kim, S. Choi, J. M. Ahn, "Averaging Methods for Enhancing the Performance of DOA Estimation Under the Rotor Effect," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 12, pp. 1245-1255, 2012. DOI: .

[ACM Style]

Seonhui Yun, Jongchan Oh, Jun O Kim, Sangwook Choi, and Jae Min Ahn. 2012. Averaging Methods for Enhancing the Performance of DOA Estimation Under the Rotor Effect. The Journal of Korean Institute of Communications and Information Sciences, 37, 12, (2012), 1245-1255. DOI: .

[KICS Style]

Seonhui Yun, Jongchan Oh, Jun O Kim, Sangwook Choi, Jae Min Ahn, "Averaging Methods for Enhancing the Performance of DOA Estimation Under the Rotor Effect," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 12, pp. 1245-1255, 12. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880