Coherent MUSIC technique for range/angle information retrieval: Application to a frequency modulated continuous wave MIMO radar

A coherent two-dimensional (2D) multiple signal classification (MUSIC) processing for the simultaneous estimation of angular and range target positions has been presented. A 2D spatial smoothing technique is also introduced to cope with the coherent behaviour of the received echoes, which may result in a rank deficiency of the signals covariance...

Antenna array characterisation and signal processing for an FM radio-based passive coherent location radar system

The design of passive coherent location radar, which exploits broadcasting transmitters of opportunity in the very high frequency (VHF) radio bandwidth, is presented. Here, the authors primarily focus on the system set-up and on the digital pre-processing steps. Emphasis is given to the antenna section analysis. The eight-element circular array,...

2D-MUSIC technique applied to a coherent FMCW MIMO radar

The authors present a 2D-MUSIC processing for the simultaneousestimation of angular and range target positions. A2D spatial smoothing technique is also introduced in orderto cope with the coherent behavior of the received echoes, which may result in a rank deficiency of the signals covariancematrix. The algorithm is analyzed with respect to its...

Array calibration technique for a coherent MIMO radar

In this paper we present a technique to estimate the calibration coefficients of a coherent Multiple-Input Multiple-Output (MIMO) array radar built on a printed circuit board (PCB). Due to the integrated structure and the MIMO nature of the system, a direct measurement of each antenna element behavior cannot be performed. The proposed method is...

Application of 2D MUSIC algorithm to range-azimuth FMCW radar data

This paper investigates the use of a 2D MUSIC algorithm for the joint estimation of angular and range target locations. Coherency and correlation characteristics of the target signals are taken into account and 2D spatial smoothing technique is preliminarily applied in order to ensure the non-singularity of the received signals covariance matrix...

Random transmission scheme approach for a FMCW TDMA coherent MIMO radar

In this paper the authors analyze the use of Time Division Multiple Access (TDMA) applied to coherent Multiple-Input Multiple-Output (MIMO) radar systems. One of the main limitations in exploiting the orthogonal condition in the time domain for MIMO radars is the reduction of the unambiguous Doppler interval. With respect to frequency modulated...

TDMA X-band FMCW MIMO radar for short range surveillance applications

The work presented in this paper was aimed at the design of a compact radar device to be used for private area surveillance applications. The radar is connected to a pan tilt zoom camera and it provides the camera system with high accuracy position information (bearing and range) of moving targets; in this way the camera can be steered to the...

Digital Beam Forming and Compressive Sensing Based DOA Estimation in MIMO Arrays

The paper presents different processing schemes that have been investigated in order to evaluate the direction of arrival (DOA) with a multiple-input multiple-output (MIMO) radar. Conventional digital beam forming (DBF) and super resolution algorithm (MUSIC) have been applied. The results provided by them have been compared with a compressive...

Coherent MIMO Array Design With Periodical Physical Element Structures

Multiple-input-multiple-output (MIMO) processing is a consolidated technique in communication systems thanks to the benefits that it offers in multipath fading environments. In recent years, studies have shown how the performances of conventional phased-array radar can be improved by using the same approach. This letter illustrates how the...

Mutual Coupling Compensation Applied to a Uniform Circular Array

In this paper, two approaches for compensation of mutual coupling and phase shifts in a passive radar system based on a circular array are compared. The first method is based on the measurement of the antenna scattering parameters and of further relative phase and amplitude variations between the channels introduced by the receiver analog front...

Side-lobe suppression techniques for a uniform circular array

This paper provides a comparison between two different techniques for the array pattern side-lobe reduction in a passive radar system based on a circular array. The first method retrieves the phase modes pattern for the reference array and then applies a conventional tapering for the side lobe suppression of the obtained virtual uniform linear...

Analysis of a novel MIMO system for security applications

Recent years have shown how the performances of the standard radar systems can be significantly improved by using a multiple-input multiple output (MIMO) approach. MIMO technique is an already well studied method for communications applications thanks to the benefits that it offers in multipath fading environments. This paper is aimed to present...