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Surveillance UWB imaging radar systems require rapid radar imaging methods. One such method, called SEABED, has been demonstrated to work well for simple-shaped targets, but not for complex-shaped targets. To resolve the difficulties, the RPM method was developed to generate better images even for complex-shaped targets, albeit at the cost of processing speeds. This paper proposes an alternative method...
Radar-based security systems are of considerable importance because of their potential for detecting concealed weapons, particularly when they are in jackets or bags. To achieve this capability, the system has to achieve high-resolution and high-speed processing simultaneously. Many of the conventional technologies have focused on resolution, not speed. Recently, highspeed imaging methods for ultra-wideband...
A two-stage extended target tracking algorithm for multistatic UWB radar is proposed. The first-stage tracking rejects clutter and multipath significantly and reduces the number of possible ghost targets in positioning and partially improves the data association performance for tracking in Cartesian coordinates. At the second stage, the Taylor series positioning algorithm is applied firstly to utilise...
This paper describes two approaches to short-range microwave imaging by means of ultra-wideband (UWB) technology. The first approach deals with synthetic aperture radar (SAR) that employs a transmit-receive antenna pair on mechanical scanner. The second one represents a multiple input multiple output (MIMO) antenna array that scans electronically in the horizontal plane and mechanically, installed...
In this paper, the formulation of Kirchhoff migration is modified for multiple-input-multiple-output (MIMO) array-based radar imaging in both free-space and subsurface scenarios. By applying the Kirchhoff integral to the multistatic data acquisition, the integral expression for the MIMO imaging is explicitly derived. Inclusion of the Snell's law and the Fresnel's equations into the integral formulation...
A novel UWB antenna system for the high-resolution near-field radar imaging has been developed. Digital footprint focusing and steering is realized using a linear receive array. The design has been verified experimentally. It has been demonstrated that the operational frequency band starts at 170MHz and ends at 3.3GHz at ??10dB level. The array??s footprint at a distance of 37cm can be electronically...
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