A low-profile wideband circularly polarized antenna is proposed for use in navigation satellite systems. The VSWR ≤2 bandwidth is 75%. The 3-dB axial ratio (circular polarization) bandwidth is 54%. The designed radiating element was fabricated and measured as part of the antenna array.
Keywords: circular polarization, wideband antenna,, antenna array, axial ratio
This article analyzes the problem of determining the location of an object based on the method of passive positioning of single-station systems with a long baseline. The method proposed in the article implies that the antenna array is integrated into a single-station system with a long baseline using three antennas. The mentioned method is able to determine the actual location of the radiation object and the parameters of the object's position by estimating the phase difference and the actual direction of the radiation object. The simulation results confirm the validity of the proposed method.
Keywords: antenna array, passive positioning system, phase difference, bearing, azimuth, error