A new type of ground antenna is introduced in the network and named Starec D (first antenna "STKD" installed at St-John's) (dorismail 1191)
The design is similar to antenna Starec B and C but with a different center of phase and a different phase law:
- distance from DORIS reference point to phase center 2 GHZ: +453 mm
- distance from DORIS reference point to phase center 400 MHZ: -39 mm
The relevant antex file is available at ftp://ftp.ids-doris.org/pub/ids/stations/doris_phase_law_antex_starecD.txt
Information about ground antenna antex files can be found in ftp://ftp.ids-doris.org/pub/ids/stations/doris_phase_law_antex_readme.txt
NB: the file doris_phase_law_antex_starec.txt is a copy of the file doris_phase_law_antex_starecBC.txt, and is only applicable for Starec B and C.
Antenna change at St John's (dorismail 1188)