ILRS Station Qualification
As of January 1, 2003, all current ILRS stations will be initially
classified as Operational
New stations will be accepted as Associate status by the Central
Bureau upon submission of ILRS
Station Response form.
Associate stations will become Operational by:
- submitting a valid site
log;
- delivering at least 10 passes of satellite data to the CB;
- passing format and data integrity validation by the CB;
- delivering at least 20 LAGEOS passes over a consecutive 3-month period
to an ILRS Data Center;
- passing data evaluation by the Analysis Working Group including:
- at least 20 LAGEOS passes in a 3 consecutive months period;
- normal point RMS of 1 cm (Shanghai Criteria);
- short term range bias stability of 4 cm (twice Shanghai Criteria);
and
- normal point acceptance rate of 80%; and
- having a collocated IGS Station or a continuously operating GPS
receiver that fulfills the IGS requirements for data acquisition and
delivery and having submitted a request for its inclusion in the IGS
Network;
- receiving approval from the Governing Board.
Starting January 01, 2004, to remain Operational Status, stations must have:
- submitted at least 50 LAGEOS passes that satisfy the rms, short-term
stability, and acceptance criteria above within a consecutive 3-month
period during the previous 12 months;
- submitted a valid site log; and
- a collocated GPS receiver as qualified above.
Stations that do not satisfy the above criteria will be given Associate Status.
Operational/Associate status will be indicated on the Quarterly Report Cards
issued by ILRS CB.
Responsible Government Official:
NASA's
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