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COBE

Cosmic Background Explorer/FIRAS

Product Name
Minimum Number of IFGs
Mission
COBE/FIRAS

Description

This reference file contains the minimum number of IFGs needed to form templates in each channel (RH, RL, LH, LL). It is used by FIL.
In order to facilitate the taking of a median if necessary, the minimum number of IFGs should be an odd number. We fear that 3 is too small because any statistical quantities generated from that number are likely not to be meaningful. Seven is uncomfortably large because our proliferation of operating states during the mission will probably cause there to be a significant number of pixels with fewer than 7 coaddable IFGs. Thus, we compromise on 5.

3 3 3 3			! Minimum number of IFGs

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A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason