基于双基线旋转的改进干涉仪定位算法

传统双长基线干涉仪（double long baselines interferometer，DLBI）测向算法要求两根基线长度严格互质，在模糊数较大时算法性能会严重下降，且对鉴相器误差敏感.针对该问题，文中提出了一种改进的双基线旋转干涉仪（double baselines rotating interferometer，DBRI）定位算法，所提算法利用两组任意长度的基线以任意角速度反向旋转获得相位差进行定位，对鉴相器误差具有鲁棒性，且在模糊数很大时也有较高的定位精度.仿真实验验证了该算法的有效性和正确性. 

An Improved Locating Algorithm Based on Double Baselines Rotating Interferometer

The traditional double long baselines interferometer (DLBI) requires the baselines to be strictly co-prime for locating algorithm. Besides, it is sensitive to the phase error and the performance becomes seriously bad with higher fuzzy number. To solve the problems, an improved direction-finding algorithm with double baselines rotating interferometer (DBRI) was proposed. In the DBRI, two baselines were designed with arbitrary length and palstance to rotate in the opposite direction. The locating was carried out according to the phase difference gotten from the improved direction-finding algorithm, obtaining better location precision with high fuzzy number and better robust to the phase discrimination error. Finally, the effectiveness and validity of the proposed algorithm were verified by computer simulations.