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This paper studies the distributed passive radar three-dimensional (3-D) imaging under the 3-D configuration formed by the illuminators of opportunity and the distributed receivers. The echoes received by the distributed channels actually constitute the target wavenumber-domain coverage, whose characteristics such as range, uniformity and compactness greatly affect the inversion performance. Generally,...
This paper describes a 3-D imaging technique employing a near-field inverse synthetic aperture radar, operated in a multi-static antenna configuration, to provide high resolution tomographic reconstructions of highly unstructured targets. The technique is based on spatially-variant Fourier-domain matched filters corresponding to spherical-targets of varying radius in a cylindrical-polar coordinate...
This paper presents the design of an active short range imaging system in the Ka-band (26.6 - 40 GHz). The sensor is a multistatic linear array which is moved perpendicular to the array dimension for the purpose of 3D imaging. By sequentially switching on the transmitters and simultaneous reception of the scattered field by each receiver, a fast sampling of the 2D aperture plane is achieved. To reduce...
Multiple-input-multiple-output (MIMO) radar is an emerging technology that has significant potential for advancing the state-of-the-art of modern radar. When orthogonal waveforms are transmitted, with M+N (N transmit and M receive) antennas, an MN-element filled virtual array can be obtained. To successfully utilize such an array for high-resolution MIMO radar imaging, constant-modulus transmit signal...
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