Image enhancement of the Super Resolution Channel (SRC) of the Mars Express HRSC experiment

Physics – Optics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

The SRC or Super Resolution Channel is the framing imaging subsystem of the HRSC experiment on the ESA Mars Express spacecraft, designed to show high-resolution detail within the broad swath of the HRSC push-broom camera. By December 2008, it had obtained about 7500 images. The quality of the SRC images proved lower than the design expectation: the thermal conditions of the camera in space caused a distortion of the optics, seen in images as blurring and ghosting. Analysis of star images demonstrated that the point-spread function was asymmetrical with offset secondary intensity peaks. Close to pericentre, where the spacecraft ground track velocity is around 3.5 km/s, an exposure time of 0.6 ms is needed to avoid motion-smear in the image. Operation of the camera has shown that the optimal trade-off between motion-smear and an acceptable SNR is found at considerably higher exposure times, around 5 ms. Trials at improving the images with respect to both the thermal distortion and the motion-smear were made using the Richardson-Lucy algorithm, an iterative procedure for recovering an image blurred by a known point spread function.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Image enhancement of the Super Resolution Channel (SRC) of the Mars Express HRSC experiment does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Image enhancement of the Super Resolution Channel (SRC) of the Mars Express HRSC experiment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image enhancement of the Super Resolution Channel (SRC) of the Mars Express HRSC experiment will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1244525

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.