First approach for on-ground radiometric characterization of the new infrared sensor technology camera

New infrared sensor technology mirror on-ground characterization

“…The set of blackbody temperatures used for mirror characterization with each camera is provided in Table 1. 2 are not sufficient to provide concluding remarks on this matter. Counts standard deviation kr DN k was averaged over all pixels, even and odd pixels and then plotted against polynomial order concluding that first order polynomials are enough to describe NIRST mirror RVS for each camera array.…”

“…(1) for β ¼ 30 deg and β ¼ 60 deg as functions of β ¼ 45 deg. 2 Although it is expected that RVS will be independent of the pixels' parity because mirror behavior is independent of the cameras; fabrication process, the results presented in Ref. Figures 1 and 2 show MWIR and LWIR RVS (in DN) for β ¼ 30 deg (red stars) and β ¼ 60 deg (blue dots) for pixels 4, 5, 255, 256, 509, and 510 for each camera array.…”

“…In this section, an overview of the experimental framework discussed by Ganopol et al 2 is provided.…”

“…2 Because NIRST cameras receive the radiation reflected by the mirror, it is necessary to address its response as part of the instrument calibration. each.…”

“…The three MWIR camera arrays operate in the ½3.4; 4.2-μm spectral range, where for the LWIR camera, arrays 1 and 2 operate in the ½10.4; 11.3-μm spectral range and array 3 operates in the ½11.4; 12.3-μm spectral range. However, due to schedule constraints, the mirror characterization took place with the on-ground calibration measurements as described by Ganopol et al 2 The aim of this work is to present the on-ground NIRST mirror characterization. The MWIR and LWIR cameras are located next to each other in this compartment with their optical axis contained in a plane normal to nadir and normal to the satellite velocity vector.…”