Information and reference manuals for data users are archived, including operation information of satellite and sensors,data and product information, PR algorithm instruction manuals, data handling manuals, etc.@@
TRMM/PR suffered a lose of its original (A-side) electronics interface.
Fortunately JAXA/NICT had designed and built the TRMM PR with redundancy
(B-side). On May 29, the A-side began to be a problem and the process of
switching to the B-side electronics was begun. This changeover including
investigation took about 2 weeks.
NASA/PPS have been operating PR with the B-side since June 17. B-side
electronics have slightly different characteristics than the A-side and
JAXA has been carefully investigating the best way to calibrate the PR
so as to maintain continuity with the A-side driven measurements. This
has required not only internal calibration information but also several
external calibrations. It has also required looking at a longer period
of data using B-side to ensure it is fully understood. These
re-calibration of B-side took about 5 months.
Please refer to a report of the PR V6 1B21 B-side calibration
coefficients and retrieved level 1, 2, 3, statistical results (pdf