Limitations of synthetic aperture laser optical feedback imaging

Abstract

In this paper we study the origin and the effect of amplitude and phase noise on Laser Optical Feedback Imaging (LOFI) associated with Synthetic Aperture (SA) imaging system. Amplitude noise corresponds to photon noise and acts as an additive noise, it can be reduced by increasing the global measurement time. Phase noise can be divided in three families: random, sinusoidal and drift phase noise; we show that it acts as a multiplicative noise. We explain how we can reduce phase noise by making oversampling or multiple measurements depending on its type. This work can easily be extended to all SA systems (Radar, Laser or Terahertz), especially when raw holograms are acquired point by point.

References in corpus (4)

• Comparative study of autodyne and heterodyne laser interferometry for imaging
• Experimental comparison of autodyne and heterodyne laser interferometry using a Nd:YVO4 microchip laser
• Acousto-optic laser optical feedback imaging
• Synthetic aperture laser optical feedback imaging using a translational scanning with galvanometric mirrors

Cited by in corpus (1)

• Plenoptic microscope based on laser optical feedback imaging (LOFI)