A New Real-Time Two-Point Non-Uniformity Correction Method

Abstract

A new real-time two-point non-uniformity correction method is proposed to solve the problems of detector response nonlinearity and detector response shift with time. It can make up for the deficiency that the two-point correction method can not be used for on-line real-time correction, and restrain the influence of the drastic change of working environment on the detector non-uniformity. The correction process of the new method is simulated and theoretically demonstrated for the infrared focal plane detection system in aerodynamic thermal environment. The results show that this method can basically satisfy the actual non-uniformity correction situation in theory, and can be applied to the complex and changeable detector working environment.

Keywords

• |infrared focal plane array|non-uniformity|two-point correction method|non-linear response|drift of detector