Three-step nonuniformity correction for a highly dynamic intensified charge-coupled device star sensor

Compensation for the non‐uniformity correction of multi‐channel TDI CCD under variable gain

“…Replace B 3 and K 3 in Equation (11) with the above results B 0 3p and K 0 3p , and, then, we can get the average response characteristic of the entire detector under variable gain as follows:…”

“…Jin et al. [11] proposed a three‐step non‐uniformity correction algorithm based on the photoelectrical response model of Intensified Charge Coupled Device (ICCD), in which two steps adopt the non‐linear two‐point correction based on the S‐curve model, and the remaining step adopts the linear two‐point correction. Marta de Lasarte focussed on the methodology designed for the radiometric calibration experiment and assessed the influence of the algorithm's variables on the quality of correction [21].…”

“…A pixel-wise linear radiance to digital conversion model was constructed by Yang et al for crime scene imaging complementary metal oxide semiconductor (CMOS), and then pixel-wise conversion gain is calculated to correct Fixed Pattern Noise (FPN) [10]. Jin et al [11] proposed a three-step non-uniformity correction algorithm based on the photoelectrical response model of Intensified Charge Coupled Device (ICCD), in which two steps adopt the non-linear twopoint correction based on the S-curve model, and the remaining step adopts the linear two-point correction. Marta de Lasarte focussed on the methodology designed for the radiometric calibration experiment and assessed the influence of the algorithm's variables on the quality of correction [21].…”

“…However, periodic calibration is required with the aid of the calibration environment in the laboratory or the calibration light source in orbit to cope with the performance changes caused by the system ageing. Such methods include single-point correction, two-point correction, multi-point linear fitting correction, which are for linear response [7][8][9][10][11][12][13][14], and piecewise linear fitting correction, polynomial fitting correction, which are for nonlinear response [15][16][17].…”