Application of millimeter-wave photonics technology in passive millimeter-wave imaging

Abstract

Passive millimeter-wave imaging is attractive due to the ability to obtain images in low-visibility conditions. In this paper, a passive millimeter-wave imaging method using photonic processing is presented. The principle of the millimeter-wave photonic signal processing method is described. The relationship between the signal conversion gain and the component parameters is discussed. The noise characteristic of this detection method is analyzed. A millimeterwave radiometer using photonic processing is presented in this paper. A passive millimeter-wave scanning imaging system using this processing method was implemented. The imaging experiment results show that this imaging method is effective.

Outdoor Passive Millimeter-Wave Imaging: Phenomenology and Scene Simulation

“…Comparing (18) with (15), it is seen they differ by a factor √ (N P /N R ). This is because in the focal plane array imager, the intensity from a resolution beam-with is sampled, while in the aperture synthesis imager, the electric field from the complete field of view is sampled.…”