It is informed from the summary and review meeting of FY-4A on-orbit testing (Phase II) that FY-4A has rounded out all testing projects and satellite platform, loading, and ground application system have been in compliance with trial operation. The new-generation geostationary meteorological satellite will be formally put into operational application, in place of FY-2G.
From July 2016, satellite research institutions like National Satellite Meteorological Center (NSMC) have organized over 200 professional technicians to execute testing for 6 months, and conduct sustained optimation work based on application feedback. Judging by testing results, product generation system can automatically produce 3 loads, 56 kinds of products. The success rate is 99%. Some products have passed international calibration and their inversion results highly comply with those of other advanced satellites in Japan and the United States.
Geo. Interferometric Infrared Sounder can provide temperature and moisture profiling probing products on an hourly basis, complementing probing operation at a 12-hour interval and injecting new impetus in numerical weather prediction (NWP). As for cloud images, an instrumental tool for forecasters to diagnose weather processes, multi-channel scanning imaging radiometer can provide an image of the eastern hemisphere at 15-minute interval, completing 5-minute regional observation, with a spatial resolution of 500 meters, furnishing forecasters with brand-new rapidly updated, finely textured and stable cloud image experience.
According to Mr. Lu Feng, the deputy chief engineer of FY-4 ground application system, to fully maximum the effects of FY-4A, they adopted the method of the combination of testing and application at the same time. The system leveraged satellite data and products and carried through testing and application of five weather and environment events, namely, rainstorm and severe convective weather, typhoon, fog, atmospheric environment (haze), and fire. During on-orbit testing, satellite data have been harnessed in over 80 weather events, meteorological support for 5 events, and over 20 dedicated typhoon consultation meetings, releasing over 100 miscellaneous monitoring reports and 10 service reports.
According to statistics, amid on-orbit testing, cumulative traffic of FY-4A satellite data pool amounted to 7.13 million, with an aggregate service data of 90.5TB. It is capable of storing 255 kinds of products and minute-scale updating, catering to high efficiency and myriad data demand of subscribers in wake of trial operation. At present, provincial FY-4A reception stations are under deployment and on track to be wrapped up prior to this year’s flood season.
It is informed that FY-4A will take the place of FY-2G in March. At that time, it will activate downward data broadcast and underpin direct data reception operation. (Jan. 22)
Reporter: Lu Jian
Editor: Liu Shuqiao