%A ZHANG Min, GUO Fucheng, ZHOU Yiyu %T A Single Moving Observer Direct Position Determination Method Using a Long Baseline Interferometer %0 Journal Article %D 2013 %J Acta Aeronautica et Astronautica Sinica %R 10.7527/S1000-6893.2013.0043 %P 378-386 %V 34 %N 2 %U {https://hkxb.buaa.edu.cn/CN/abstract/article_14816.shtml} %8 2013-02-25 %X

In view of the complex structures and amplitude-phase inconsistencies among receiving channels in single observer localization systems using multi-channel interferometers or arrays, a direct position determination (DPD) method is advanced in this paper based on subspace decomposition using a long baseline interferometer (LBI). A quantum-behaved particle swarm optimization (QPSO) initialization algorithm is designed and then the Newton method is used to improve the estimation. Simulation results show that observer maneuver should be taken into consideration to achieve fast unambiguous results. The proposed method can approach Cramer-Rao lower bound (CRLB) at high signal noise rate (SNR) and achieve better performance than the bearing-only (BO) method using multi-channel interferometers and the phase difference rate method by LBI under low SNR.