Different from the phased-array using the same carrier frequency for each transmit element, the frequency diverse array (FDA) uses a small frequency offset across the array elements to produce range-angle-dependent transmit beampattern. FDA radar provides new application capabilities and potentials due to its range-dependent transmit array beampattern, but the FDA using linearly increasing freq...

In this paper, we study the Cocentered Orthogonal Loop and Dipole pairs Uniform Linear Array (COLD-ULA) which is sensitive to the source polarization in the context of the localization of time-varying narrow-band far-field sources. We derive and analyze nonmatrix expressions of the deterministic Cramér–Rao Bound (CRB(COLD)) for the direction and the polarization parameters under the assumption ...

The height measurement algorithm of metre wave multiple input output (MIMO) radar based on uniform linear array (ULA) has some problems, such as a sharp decline angle accuracy ultra-low altitude targets and large fluctuation with the change elevation. In order to solve above difficult starting from perspective reducing influence multipath effect by structure, coprime (CPA) is applied monostatic...

Recently, uniform linear array (ULA) fitting (UF) principle is proposed for sparse (SA) design using pseudo-polynomial equations. Typically, it verified that the designed SAs via UF enjoy a lower bound on degrees of freedom (uDOF), which approximately 0.5 N <sup xmlns:xlink="http://www.w3.org/1...

The antispoofing method using the direction-of-arrival (DOA) feature can effectively improve application security of global navigation satellite system (GNSS) receivers. In this paper, a sparse reconstruction approach based on coprime array antennas is proposed to provide reliable DOA estimation under GNSS spoofing attack. Specifically, self-coherence property genuine signals and was fully expl...

Pilot contamination is known to be one of the main bottlenecks for massive multi-input multi-output (MIMO) networks. For moderately large antenna arrays (of importance to recent/emerging deployments) and correlated MIMO, pilot contamination may not be the dominant factor in certain scenarios. To the best of our knowledge, a rigorous characterization of the achievable rates and their explicit de...

Inspired by the computational simplicity and numerical stability of QR decomposition, a nonparametric method for estimating the number of signals without eigendecomposition (MENSE) is proposed for the coherent narrowband signals impinging on a uniform linear array (ULA). By exploiting the array geometry and its shift invariance property to decorrelate the coherency of signals through subarray a...

This paper considers the problem of designing sparse linear tripole arrays. In such arrays at each antenna location there are three orthogonal dipoles, allowing full measurement of both the horizontal and vertical components of the received waveform. We formulate this problem from the viewpoint of Compressive Sensing (CS). However, unlike for isotropic array elements (single antenna), we now ha...

Based on two orthogonal linear sparse arrays (LSA) which consist of the coupled-sensors (CSs), a high resolution and no ambiguity (HRNA) method is proposed to estimate the two-dimensional (2D) angles of single source. The HRNA method first constructs a new covariance matrix to achieve no ambiguity independent angles estimation by using the covariance matrix generated by each LSA, and then compu...

This paper addresses the problem of directions-of-arrival (DOAs) estimation of coherent narrowband signals impinging on a uniform linear array (ULA) when the number of signals is unknown. By using an overdetermined linear prediction (LP) model with a subarray scheme, the DOAs of coherent signals can be estimated from the zeros of the corresponding prediction polynomial. Although the corrected l...