Uniform and Non-Uniform V-shaped Arrays for 2-D DOA Estimation

2008-04-22
Filik, Tansu
Tuncer, Temel Engin
Yasar, T. Kaya
In this study, a new method for optimum design of uniform and non-uniform V-shaped arrays is presented for azimuth and elevation angle estimation. The proposed design method finds an optimum angle between the linear sub-arrays of the V-array by using the Cramer-Rao Bound (CRB) where statistical coupling effect between azimuth and elevation angle estimation is considered This method can be used to obtain directional and isotropic angle performances for uniform and non-uniform V-arrays. For non-uniform isotropic V-array symmetric and non-symmetric design examples are given. Furthermore the modelling error for the sensor positions is also investigated The direction of arrival (DOA) performance comparisons of designed V-arrays and uniform circular array (UCA) are also presented and it is shown that the designed arrays have better DOA accuracy.

Suggestions

UNIFORM AND NONUNIFORM V-SHAPED ISOTROPIC PLANAR ARRAYS
Filik, Tansu; Tuncer, Temel Engin (2008-07-23)
In this study, isotropic V-shaped uniform and nonuniform arrays are considered. An isotropic array has the same value for the Cramer-Rao bound (CRB) for all direction of arrival (DOA) angles. The conditions for isotropic V-shaped arrays are presented and closed form expressions for V-shaped uniform and nonuniform arrays are found. These expressions return the V-angle for the array. Therefore, given the number of sensors and sensor displacements, isotropic performance V-angle can be found easily. V-shaped ar...
Design and evaluation of V-shaped arrays for 2-D DOA estimation
Filik, Tansu; Tuncer, Temel Engin (2008-04-04)
A new method for optimum design of V-shaped arrays is presented for azimuth and elevation angle estimation simultaneously. The design criterion is based on the Cramer-Rao Bound (CRB) for joint estimation where the coupling effect between the azimuth and elevation direction of arrival (DOA) angles is taken into account. The design method finds an optimum angle between the linear sub-arrays of the V-array. The computation of the optimum angle is simple due to the monotonic characteristics of the best and wors...
Design of V-shaped array geometry
Filik, Tansu; Tuncer, Temel Engin; Yasar, T. Kaya (2007-06-13)
in this study, a new design method is proposed for V-shaped planar array geometry for two-dimensional azimuth and elevation angle estimation. The proposed method is similar to filter design in signal processing. This method determines the V-shaped array geometry which gives the best 2-D angle estimation performances for the specified design parameters. The best geometry is determined by using Cramer-Rao Bound (CRB) and performance comparison is done with other planar array geometries.
Uniform and nonuniform V-shaped planar arrays for 2-D direction-of-arrival estimation
Filik, T.; Tuncer, Temel Engin (American Geophysical Union (AGU), 2009-09-22)
In this paper, isotropic and directional uniform and nonuniform V-shaped arrays are considered for azimuth and elevation direction-of-arrival (DOA) angle estimation simultaneously. It is shown that the uniform isotropic V-shaped arrays (UI V arrays) have no angle coupling between the azimuth and elevation DOA. The design of the UI V arrays is investigated, and closed form expressions are presented for the parameters of the UI V arrays and nonuniform V arrays. These expressions allow one to find the isotropi...
Direction finding with a circularly rotated antenna
Koc, AT; Sen, E; Tanik, Y (2000-06-09)
In this work, a new algorithm for multiple emitter direction finding by using a single antenna moving along a circular trajectory is proposed. The problem is formulated by taking the Doppler frequency shift, caused by the movement of the antenna. into account, and by assuming that the information, hidden in the incoming signals, does not change in the observation duration. The proposed direction finding algorithm is, therefore, based on single snapshot processing and also on the linear prediction method dev...
Citation Formats
T. Filik, T. E. Tuncer, and T. K. Yasar, “Uniform and Non-Uniform V-shaped Arrays for 2-D DOA Estimation,” 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38000.