IGS Analysis Center Coordinator (ACC)

IGS Analysis Center Coordinator (ACC)

run by GA & MIT

Inter-Signal Code Biases

Information on P1-C1 code biases (from CODE group at Astonomical Institute, University of Bern)

File of historic P1-C1 code bias values (from ESA group at European Space Operations Centre)

CC2NONCC (from ESA group at European Space Operations Centre)

CC2NONCC utility is used to convert a RINEX file from a receiver which uses the cross-correlation technique to pseudorange observables compatible with the modern pseudorange tracking.
Specifically, the C1 and if necessary the P2' (equivalent to C1 + (P2-P1)) pseudorange observables of cross-correlation receivers are replaced by C1 --> C1 + f(i) P2' --> P2'+ f(i) where f(i) are empirically-determined long-term average values i as a function of GPS satellite PRNi.
In addition, a few models of non-cross-correlator receivers report the C1 observable rather than P1. For these types, only the C1 is replaced by C1 --> C1 + f(i) and the P2 observable is left unchanged.
the main program file header (cc2noncc.f) and the make files should be read for compilation and further instructions. Please use the p1c1bias.hist above with cc2noncc and keep it updated with the monthly P1C1 values published at the CODE ftp server (link above).

12 JAN 2016, originator IGS ACC