3D DoA-based localization with phase jump corrections

Le, Hoang. M.; Slock, Dirk TM; Rossi, Jean-Pierre
JEEIT 2021, IEEE Jordan International Joint Conference on Electrical Engineering and Information Technology, 16-18 November 2021, Amman, Jordan

Localizing a source based on the directions of its signals is an attractive approach because no synchronization among clocks is required. In this paper, we propose a Maximum
Likelihood (ML) estimator to solve the location problem in 3D schemes, where a signal’s direction is mathematically expressed by an elevation angle and an azimuth angle which applies iterative procedures for position estimation. This estimator applies iterative procedures for position estimations. To avoid confusions, the value of each angle must be predefined in an interval of 2p- length. However, the convergence of iterative procedures will be really challenging if there are angle estimation errors caused by noisy measurements with values near the boundaries of this interval. In our proposed procedure, the elevation angle is defined with the arctan function and the azimuth angle is defined with the atan2 function, whose codomain is 2p-long, to map the DoA. Furthermore, to robustify the estimations near the boundaries, phase jump corrections are proposed to rectify the final estimates. Simulation results show significant performance improvements.

Systèmes de Communication
Eurecom Ref:
© 2021 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
See also:

PERMALINK : https://www.eurecom.fr/publication/6703