In practical terms, direct data domain least squares (DLS) beamforming algorithm performance is severely decreased by the array steering vector uncertainty. In this paper, we investigate the performance of DLS approach for beamforming. Uniform linear antenna array radar of dipole antenna is considered...
Although the array output vector r(t) presented in Equation (2.4) was derived for a uniform linear array, this equation may apply to an arbitrary array geometry as long as the adequate array manifold matrix A, obtained analytically or by calibration, is considered in the model. The array or...
A Uniform Linear Array (ULA) is a collection of sensor elements equally spaced along a straight line. The most common type of sensor is a dipole antenna that can transmit and receive Electromagnetic Waves over the air. Other types of sensors include acou
Array motion can efficiently enhance the achievable number of degrees-of-freedom (DOFs) by the virtue of filling the neighboring holes of each lag in the difference co-array of a linear sparse array. In this paper, a new structured sparse array design exploiting two uniform subarrays on a mo...
Unfortunately,uniformlineararraysdonotprovidean appropriatesolutiontoscenarioswherein360"fieldofviewis required.Inthesescenarios,whicharecommoninsurviel- lance,cellularphone,etc.,thenaturalchoiceisauniform circulararray. Inthispaperwepresentapreprocessingtechniquethatex- ...
a planar array is needed when estimates of source azimuth and elevation are required. Such well-known planar arrays include the two-orthogonal uniform linear array (the L-shaped array) [1], the rectangular array [2], and the uniform circular array (UCA) [3–7]. The UCA is able to prov...
Therefore, this work presents a new technique that synthesizes shaped beam patterns through the control of non-uniformly samples of the array factor, both in amplitude and phase. The sample phases increase the number of degrees of freedom. To produce complex patterns, the sample phases of the ...
unifo rill linear array (ULA 、and uniforill circular array (UCA) 【1].It can be easily seen from Ref.[7] that the Toeplitz stru ctu re of the mutu al coupling matrix can yield some particular (1inear) propert ies on the array error matrix . which w ou ld lcad to ...
In the case of a uniform linear array (ULA), if the receive array has Mr elements and the transmit array has Mt elements, the VAA can become a filled ULA with Mt × Mr elements when the interelement spacing is d and Mr × d, respectively. Furthermore, if the total number of arrays...
Even if the circle segment is approximated with linear maps, the different building block deformation factors lead to non-affinity. KinetiX metamaterials [48] formed by a 1D array of combined bending and basic units create a bending strip; also, another combination of cells for bending and ...