Multiple-views real array imaging for terahertz radar

In this work a multiple-views real array imaging method for terahertz radar is demonstrated and theoretically explained based on synthetic aperture technique. Taking full advantage of short wavelength of terahertz wave, the real transreceiver array can provide high-resolution in transverse dimensions, while a wideband signal provides the resolution in the range dimension. Based on the inverse synthetic aperture radar imaging principle, an improving of transverse resolution is realized by acquirement of multiple virtual apertures. Several individual, coherent images of a target, which are resulted from the relative rotation between the transreceiver array and targets, are simply superposed to create a high-resolution image. Simulations by electromagnetic calculation data verify the proposed imaging scheme.