Title :
A space grade camera for image correlation
Author :
Roma, D. ; Bosch, J. ; Carmona, M. ; Casas, A. ; Herms, A. ; Gomez, J.M. ; Lopez, M. ; Sabater, J. ; Baumgartner, J. ; Maue, T. ; Nakai, E. ; Schmidt, W. ; Volkmer, R.
Author_Institution :
Electron. Dept., Univ. of Barcelona, Barcelona, Spain
Abstract :
In this paper we describe the space grade camera we developed for the Polarimetric and Helioseismic Imager (PHI) instrument of the Solar Orbiter (SO) mission. The camera, called Correlation Tracking Camera (CTC) will be part of the Image Stabilization System (ISS) used to compensate the spacecraft jitter. Since the ISS works on a correlator basis, the CTC requires a high frame rate while keeping the power consumption as low as possible. The CTC works at a nominal frame rate of 414 fps for 128 pixels square images with a latency below the microsecond. The images have a 10 bit resolution and the tests shows an effective number of bits (ENOB) above 9.3. Also, the full ISS closed-loop has been successfully tested with this camera.
Keywords :
astronomical image processing; cameras; Polarimetric and Helioseismic Imager instrument; Solar Orbiter mission; correlation tracking camera; effective number of bits; image correlation; image stabilization system; power consumption; space grade camera; spacecraft jitter; Cameras; Clocks; Correlation; Field programmable gate arrays; Microprogramming; Noise; Power demand; aerospace electronics; cameras; field programmable gate arrays;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2015 IEEE 13th International
Conference_Location :
Grenoble
DOI :
10.1109/NEWCAS.2015.7182110
