The AGILE on-board Kalman filter

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

11

Scientific paper

On-board reduction of particle background is one of the main challenges of space instruments dedicated to gamma-ray astrophysics. We present in this paper a discussion of the method and main simulation results of the on-board background filter of the Gamma-Ray Imaging Detector (GRID) of the AGILE mission. The GRID is capable of detecting and imaging with optimal point spread function gamma-ray photons in the range 30 MeV 30 GeV. The AGILE planned orbit is equatorial, with an altitude of 550 km. This is an optimal orbit from the point of view of the expected particle background. For this orbit, electrons and positrons of kinetic energies between 20 MeV and hundreds of MeV dominate the particle background, with significant contributions from high-energy (primary) and low-energy protons, and gamma-ray albedo-photons. We present here the main results obtained by extensive simulations of the on-board AGILE-GRID particle/photon background rejection algorithms based on a special application of Kalman filter techniques. This filter is applied (Level-2) sequentially after other data processing techniques characterizing the Level-1 processing. We show that, in conjunction with the Level-1 processing, the adopted Kalman filtering is expected to reduce the total particle/albedo-photon background rate to a value (⩽10 30Hz) that is compatible with the AGILE telemetry. The AGILE on-board Kalman filter is also effective in reducing the Earth albedo-photon background rate, and therefore contributes to substantially increase the AGILE exposure for celestial gamma-ray sources.

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

The AGILE on-board Kalman filter 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 The AGILE on-board Kalman filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The AGILE on-board Kalman filter will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1550610

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