Automated cloud tracking system for the Akatsuki Venus Climate Orbiter data

Details Automated cloud tracking system for the Akatsuki Venus Climate Orbiter data Automated cloud tracking system for the Akatsuki Venus Climate Orbiter data

Feb 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012icar..217..661o&link_type=abstract

Icarus, Volume 217, Issue 2, p. 661-668.

Physics

Scientific paper

Japanese Venus Climate Orbiter, Akatsuki, is cruising to approach to Venus again although its first Venus orbital insertion (VOI) has been failed. At present, we focus on the next opportunity of VOI and the following scientific observations.We have constructed an automated cloud tracking system for processing data obtained by Akatsuki in the present study. In this system, correction of the pointing of the satellite is essentially important for improving accuracy of the cloud motion vectors derived using the cloud tracking. Attitude errors of the satellite are reduced by fitting an ellipse to limb of an imaged Venus disk. Next, longitude-latitude distributions of brightness (cloud patterns) are calculated to make it easy to derive the cloud motion vectors. The grid points are distributed at regular intervals in the longitude-latitude coordinate. After applying the solar zenith correction and a highpass filter to the derived longitude-latitude distributions of brightness, the cloud features are tracked using pairs of images. As a result, we obtain cloud motion vectors on longitude-latitude grid points equally spaced. These entire processes are pipelined and automated, and are applied to all data obtained by combinations of cameras and filters onboard Akatsuki. It is shown by several tests that the cloud motion vectors are determined with a sufficient accuracy. We expect that longitude-latitude data sets created by the automated cloud tracking system will contribute to the Venus meteorology.

Affiliated with

Also associated with

No associations

Rating

Automated cloud tracking system for the Akatsuki Venus Climate Orbiter data 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 Automated cloud tracking system for the Akatsuki Venus Climate Orbiter data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automated cloud tracking system for the Akatsuki Venus Climate Orbiter data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1839122