SLR STATION 7811

Laser station 7811 is a part of the ILRS. Main task of the station is carry out a laser observations of artificial satellites of Earth. These data are used by the ILRS to generate a number of scientific and operational data products including:

• Earth orientation parameters (polar motion and length of day);
• Station coordinates and velocities of the ILRS tracking systems;
• Time-varying geocenter coordinates;
• Static and time-varying coefficients of the Earth's gravity field;
• Centimeter accuracy satellite ephemerides;
• Fundamental physical constants.

The accuracy of SLR data products is sufficient to support a variety of scientific and operational applications including:

• Realization of global accessibility to and the improvement of the International Terrestrial Reference Frame (ITRF);
• Monitoring three dimensional deformations of the solid Earth;
• Monitoring Earth rotation and polar motion;
• Support the monitoring of variations in the topography and volume of the liquid Earth (ocean circulation, mean sea level, ice sheet thickness, wave heights, etc.);
• Tidally generated variations in atmospheric mass distribution;
• Calibration of microwave tracking techniques;
• Picosecond global time transfer experiments;
• Astrometric observations including determination of the dynamic equinox, obliquity of the ecliptic, and the precession constant;
• Gravitational and general relativistic studies including Einstein's Equivalence Principle, the Robertson-Walker b parameter, and time rate of change of the gravitational constant;
• Solar System ties to the International Celestial Reference Frame (ICRF).