基于噪声子空间解模糊的双基线干涉仪测向算法

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中图分类号： TN971+.5 文献标志码：A

Localization algorithm for double baseline interferometer based on noise subspace eliminating ambiguity

LIN Xinping1，WANG Huaxing²，SU Kangl，MA Qin1

1.Nanjing Electronic Equipment Research Institute，Nanjing 2lOoOo，Jiangsu，China; 2.Beijing Institute of Remote Sensing Information，Beijing 1Ooo11，China）

Abstract： Double baseline interferometer has fewer channels，lower cost and enjoys engineering application value.A localization algorithm for double baseline interferometer based on noise subspace eliminating ambiguity is proposed.Firstly，double baseline interferometer array structure is designed， which enables to obtain noise subspace by eigenvalue decomposing of the received signals.Subsequently，allof the ambiguity value are obtained through interferometer and the diferent direction vectorare constructed by traversing the ambiguity value.Finally，by searching for the direction vector with the strongest orthogonality to the noise subspace，the ambiguity-free estimation is obtained.The proposed algorithm has a high probability of eliminating ambiguity and a long baseline for interferometer deployment. Simulation results verify the effectiveness of the proposed interferometer structure and algorithm.

Key words：double baseline interferometer;ambiguity-free;noise subspace

0 引言

相位干涉仪是一种具有较高测量精度的测向方法，在无源探测系统中得到广泛应用[1-3]相位干涉仪通常采用多个天线构成天线阵来实现。（剩余5955字）