com navigation structure general satellite info ilrs support retroreflector info center of mass site performance info

Etalon-1 and -2: Array Offset Information

Center of Mass Information:

ref: Otsubo and Appleby, "System-dependent centre-of-mass correction for spherical geodetic satellites" Journal of Geophysical Research, 108, B4, 2201, doi:10.1029/2002JB002209, 2003.

The standard Etalon center-of-mass correction is 576 mm

correction for
single photon systems

edit level com (mm)
none 552
3.0 556
2.5 564
2.0 580

correction for
C-SPAD (mm)

FWHM pulse width
(ps)
 edit level ave. num detected photons
0.1 1 10 100
1

 3.0 558 573 608 613
2.5 565 581 609 613
2.0 580 592 610 613
100

 3.0 558 571 600 604
2.5 565 578 600 604
2.0 580 590 601 604

correction for
leading-edge-half
maximum systems (mm)

FWHM pulse width (ps) com (mm)
1 612
100 607
300 598
1000 578
3000 562

The officially adopted ILRS model for the appropriate CoM correction for the Etalon satellite for any station is provided at http://ilrs.dgfi.tum.de/data_handling/com_etalon.txt.