A Novel Microwave Staring Correlated Radar Imaging Method Based on Bi-Static Radar System

Sensors
Bo YuanDongjin Wang

Abstract

The stochastic characteristic of the radiation field of a mono-static microwave staring correlated imaging (MSCI) radar degenerates with the increase of the imaging distance, which results in degradation of the image quality. To address this issue, a novel MSCI method based on bi-static radar is proposed from two perspectives: site-deploying and waveform design. On the one hand, a new bi-static MSCI site-deploying scheme is proposed which adopts two transmitting stations with their azimuth angles relative to the center of the imaging region differing by 90 degrees. On the other hand, by using two transmitting arrays synchronously transmitting inner-and-inter pulse frequency hopping (IAIP-FH) signals, the radiation field of each station includes a few "frequency stripes" perpendicular to the radiation direction, and as a consequence, the "frequency stripes" of each radiation field are perpendicular to each other. As a result, the radiation field of the bi-static MSCI is the superposition of the two striped radiation fields, thus a latticed radiation field is constructed. Therefore, the targets in different latticed grids scatter independent fields, then, the images can be reconstructed using correlation process (CP) algorithms. ...Continue Reading

References

Jan 19, 2013·Science·John HuntDavid R Smith
Dec 11, 2013·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Guy LipworthDavid R Smith

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