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Aimed at continuous scene imaging, this paper utilizes signal reconstruction method to eliminate random phases of scatter cells and reduce signal bandwidth, to achieve downward-looking 3D imaging in the condition of sparse flight for array SAR. With the sampling method of repeat flight such as 7 dense flights and 4 sparse flights with sampling criteria of [1 1 1 0 0 1 0] (Barker code sequence), [0...
In this paper we introduce a new concept of a dual sided phase conjugating lens operating as an imaging sensor for continuous wave or pulsed signals for passive target 3D localization. We describe the principle of operation and demonstrate the core resolution properties for single and multiple objects by the way of numerical simulation. Particularly it is shown that the characteristic resolution of...
ldquoOne-activerdquo LASAR is a kind of linear array 3-D image SAR system that only one element of the linear array is active at every footprint. To verify the feasibility of ldquoone-activerdquo LASAR, two X-band transmitter and receiver antennas are mounted on a 2D motion control system. Then, we control the antennas moving with a specific trajectory to synthesize a virtual sparse 2D antenna array...
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...
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