ADAPTIVE DOA ESTIMATION IN REFLECTIVE ENVIRONMENTS

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HAJMALEK V.; KAHAEI M.H.

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Journal: Advanced Defense Science and Technology Year:2011 | Volume:1 | Issue:2 Page(s): 55-61

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Information Journal Paper

Title

ADAPTIVE DOA ESTIMATION IN REFLECTIVE ENVIRONMENTS

Author(s)

HAJMALEK V. | KAHAEI M.H. | Issue Writer Certificate

Keywords

RADARQ2

COHERENTQ3

D3LSQ3

CONJUGATE GRADIENTQ3

Abstract

Usage of spatial information in the DOA estimation of signals, overcome some weaknesses of time-processing techniques. In this paper, following the Direct Data Domain Least Square (D3LS) technique, amplitude information of signals arrived at each element in an antenna array are arranged in a square matrix in which, except for the first row, other entries are combinations of reflective signals, noise and interference. By forming an equation including this matrix, weighting factors of antenna array, and antenna gain, coefficients are calculated in such a way that all signals which their DOA is not important, i.e. reflected signals, noise and etc., reach their least quantity. Then, by making a symmetric square matrix and modification of the main equation according to Linear CONJUGATE GRADIENT procedure, weighting factors of antenna are obtained. Finally, it is shown by simulation that this procedure will accelerate the convergence process remarkably compared with D3LS technique.

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APA: Copy

HAJMALEK, V., & KAHAEI, M.H.. (2011). ADAPTIVE DOA ESTIMATION IN REFLECTIVE ENVIRONMENTS. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, 1(2), 55-61. SID. https://sid.ir/paper/167397/en

Vancouver: Copy

HAJMALEK V., KAHAEI M.H.. ADAPTIVE DOA ESTIMATION IN REFLECTIVE ENVIRONMENTS. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY[Internet]. 2011;1(2):55-61. Available from: https://sid.ir/paper/167397/en

IEEE: Copy

V. HAJMALEK, and M.H. KAHAEI, “ADAPTIVE DOA ESTIMATION IN REFLECTIVE ENVIRONMENTS,” (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, vol. 1, no. 2, pp. 55–61, 2011, [Online]. Available: https://sid.ir/paper/167397/en

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