Space camera in-orbit absolute calibration method based on fixed star
A space camera, star technology, applied in image data processing, measuring devices, instruments, etc., can solve the problems of long calibration interval, increase human and material resources, etc., to save calibration time, reduce calibration cost, and take into account programmable sexual effect
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[0041] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:
[0042] Assuming that the radiance from the target scene received by the space camera in its instantaneous field of view is SRF, in the ideal case where all imaging links are linear systems, the schematic diagram of the system energy transfer process is as follows figure 2 As shown, figure 2 It is a schematic diagram of the transfer function of the space camera system of the present invention.
[0043] SRF=A 0 ·Ω det ·Τ ota (λ)·R det (λ)·R elec (λ)·R A / D (λ)·E NL (λ)·τ noise (λ)·τ NL (λ)·Δλ (1-1)
[0044]
[0045] among them:
[0046] A 0 —The effective area of the entrance pupil of the space camera;
[0047] Ω det —The solid angle of the entrance pupil aperture of the space camera;
[0048] τ ota (λ)—The total transmittance of the optical system of the space camera including various optical components;
[0049] R det (λ)—The responsivity of the...
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