Radio Monitoring

Abstract

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Virtual Antenna Array for Minimization of DOA Estimation Systematic Error Caused by Scattering of Incident Waves on Antenna Carrier Body

“…Numerical implementation is the simplest for the VAA method based on the Cauchy integral (Equations (5) and (6)) and Laurent series (Equations (7) and (8)). In the first case (Equations (5) and (6)), the problem reduces to solving a system of linear algebraic equations, whose order is limited by the number of RAA elements (on mobile direction finders, we can rarely see a circular array with more than nine elements [29]). In the second case (Equations (7) and (8)), the computational cost is mainly in finding the coefficients of the Laurent series (Equation 7).…”

“…The reference amplitude-phase distribution was chosen to be an equi-amplitude distribution with a phase distribution corresponding to a plane electro-magnetic wave propagating in a homogeneous medium. The direction to a radio source was taken as an angular estimate that corresponded to the maximum value of the cross-correlation coefficient [29]. In the correlation-interferometric method we use voltages…”