米波雷达低仰角波达方向估计的快速算法

doi:10.3969/j.issn.1001-2400.2011.05.019

Abstract

Abstract:

Aimed at the problem of low elevation estimation in VHF multipath environment, a fast temporal-spatial sequential algorithm is proposed. The information in both the time domain and frequency domain is applied to improve the direction-of-arrival estimation performance. First, by utilizing the information on range and velocity, which has been achieved in tracking environment, the received data are integrated to form a single sample of the array signal vector. Then, a matrix pencil is constructed by the vector. Finally, the generalized eigen-decomposition is employed to estimate the direction-of-arrival directly. While overcoming the multipath effect, this method avoids the spectrum peak searching and reduces the computational burden. Theoretical analysis and computer simulation results demonstrate the effectiveness of the proposed method.

Key words: VHF radar, altitude measurement, multipath, direction-of-arrival, matrix pencil

CLC Number:

TN957

LIU Jun;LIU Zheng;XIE Rong;ZHANG Fangfang. Fast algorithm for low-angle direction-of-arrival estimation in VHF radar[J].J4, 2011, 38(5): 115-120.

References

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Fast algorithm for low-angle direction-of-arrival estimation in VHF radar

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