Abstract—The concept of geolocation is a real position estimation method of a specific object which generates a radio signal. Angle of Arrival (AOA) scheme is commonly used to discover the position of active radio sources or any military radio emitter. In two dimensional space, the geolocation method based on AOA scheme uses at least two directional data of propagation signal from receivers for the position estimation of an emitter. In AOA based geolocation, the measurement error which is caused by environmental noise is a major factor of estimation accuracy decrease. Therefore, this paper introduces the precise geolocation method using AOA measurement data through the Recursive Weighted Least Square (RWLS) scheme. The RWLS scheme can obtain the iterative solution of emitter position which is more accurate than the general Least Square (LS) solution with weighting measurement data. For the performance verification, some simulation results demonstrate that our proposed RWLS scheme improves the accuracy and computational speed for geolocation.
 

Index Terms—angle of arrival, estimation accuracy, geolocation, recursive weighted least square

Cite: Kyunghyun Lee, Hyungkwan Kwon, and Kwanho You, "Recursive Estimation of Emitter Position Using AOA Measurements," International Journal of Electronics and Electrical Engineering, Vol. 5, No. 3, pp. 250-254, June 2017. doi: 10.18178/ijeee.5.3.250-254