In this paper, we present a noble pattern synthesis method of linear and planar array antennas, with non-uniform spacing, for simultaneous reduction of their side-lobe level and pattern distortion during beam steering. In the case of linear array, the Gauss-Newton method is applied to adjust the positions of elements, providing an optimal linear array in the sense of side-lobe level and pattern...

The method of mutual coupling correction of array output signal is studied in the paper. According to array signal processing’s feature, array error model is analyzed and array mutual coupling is studied. The method that smart antennas’ channel calibration by BP network in wireless communication is proposed, which improves the accuracy of algorithms , such as the DOA estimation algorithm, Beam ...

In 2004, the Atlas program of Lockheed Martin created a vision for performance evolution of the Atlas V family focused on NASA growth missions, with performance options ranging up to 140t. The 5m diameter, 70t class Phase 2 Atlas Heavy, assuming dual RD-180s, was a key vehicle in this evolution. With Constellation, this configuration was put on the back burner, but there is now renewed interest...

This paper considers the near-field source location problem for a nonuniform linear array (non-ULA) in the presence of sensor gain and phase errors. A sequential optimization calibration method is proposed to simultaneously estimate the gain and phase errors as well as the locations of calibration sources involving the ranges and the azimuths by exploiting some imprecise a-priori knowledge of c...