Direction Finding Using Rotated Long Baseline Interferometer

Abstract:

To reduce the hardware cost of traditional multichannel array or interferometer, a direction finding method using rotated long baseline interferometer (RLBI) has been developed. To overcome the initialization problem, a multiple hypothesis Gauss-Newton (MHGN) algorithm is proposed. It first chooses multiple initial pairs from a pair of PD measurements and then applies each value to the GN algorithm and meanwhile obtains a cost for this initial value. Finally, the ultimate estimate is then picked with the minimum cost. Simulation shows that the proposed method can approach to the Cramer-Rao lower bound (CRLB).

• Periodical: Applied Mechanics and Materials (Volumes 496-500)
• Pages: 1792-1795
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.496-500.1792
• Online since: January 2014
• Authors: Min Zhang*, Fu Cheng Guo, Yi Yu Zhou
• Keywords: Direction Finding, Gauss-Newton Method, Long Baseline Interferometer, Phase Difference

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