From wangningbo at aoe.ac.cn Wed May 6 01:02:00 2026 From: wangningbo at aoe.ac.cn (wangningbo at aoe.ac.cn) Date: Wed, 6 May 2026 09:02:00 +0800 Subject: [IGS-MGWG] CAS bias product update following BDS PRN reassignment Message-ID: <2026050609020040977117@aoe.ac.cn> Dear colleagues, following the BDS PRN reassignment completed in April, as announced in IGSMAIL-8692, CAS bias products have been updated accordingly. The main updates are as follows: #1 BDS system is treated as a single constellation in bias processing, without separate hanling of BDS-2 and BDS-3. #2 Code biases are generated for all observable BDS signal types after the PRN reassignment. #3 The satellite SVN information has been aligned with the IGS satelltie metadata file https://files.igs.org/pub/station/general/igs_satellite_metadata.snx #4 For CAS1 satellite APC-corrected bias product, the PCO corrction keeps in consistency with the latest igs20.atx file. The updated CAS bias products are available from the CAS data center https://data.bdsmart.cn/pub/product/bias/2026/ Although CAS also generates 3-day, 7-day and monthly bias solutions, the one-day bias solution (CAS1OPSRAP_yyyyddd0000_01D_01D_OSB.BIA) continues to be used in CAS real-time correction products (i.e., SSRA01CAS1 & SSRC01CAS1). Please let us know if you encounter any problems when using the updated bias products, or if further information is needed. With best regards, Ningbo Wang Ningbo WANG, Ph.D Associate Professor Aerospace Information Research Institute (AIR) Chinese Academy of Sciences (CAS) No 9 Dengzhuang South Road Beijing China Tel (+86) 186 7401 0516 e-mail wangningbo at aoe.ac.cn -------------- next part -------------- An HTML attachment was scrubbed... URL: