| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
ACC
Accelerometer | Operational
| Measurement of the spacecraft non-gravitational accelerations, linear accelerations range: +/- 2*10-4 m/s2; angular measurement range: +/- 9.6* 10-3 rad/s2; measurement bandwidth: 10-4 to 10-2 Hz; Linear resolution: 1.8*10-10 m/s2; angular resolution: 8*10-9 rad/s2. | n/a |  |
GNSS POD Receiver
GNSS POD Receiver | Operational
| Precision orbit determination. | n/a | |
GPS Receiver (Swarm)
GPS Receiver (Swarm) | Operational
| Provides position and timing determination | n/a | |
GPSP
Global Positioning System Payload | Operational
| Precision orbit determination. | n/a | |
Laser Reflectors
Laser Reflectors | Operational
| Measures distance between the satellite and the laser tracking stations. | n/a | |
Laser Reflectors (ESA)
Laser Reflectors | Operational
| Measures distance between the satellite and the laser tracking stations. | n/a | |
LCCRA (LARES)
Laser Corner Cube Reflector Assembly | Operational
| Accuracy measurements on Lense-Thirring effect and baseline tracking data for General Relativity study and precision geodesy. Also for calibration of radar altimeter bias. | n/a | |
LCCRA (LARES-2)
Laser Corner Cube Reflector Assembly | Operational
| Accuracy measurements on Lense-Thirring effect and baseline tracking data for General Relativity study and precision geodesy. Also for calibration of radar altimeter bias. Retro-reflectors are smaller (about 1 inch in diameter) than those mounted onboard LARES-1 and their number is much greater (about 300). | n/a | |
LRA
Laser Retroreflector Array | Operational
| Baseline tracking data for precision orbit determination and/or geodesy. Also for calibration of radar altimeter bias. Several types used on various missions. (ASI involved in LAGEOS 2 development). | n/a | |
LRA (LAGEOS)
Laser Retroreflector Array | Operational
| Baseline tracking data for precision geodesy. Also for calibration of radar altimeter bias. Several types used on various missions. | n/a | |
LRA (Sentinel-6)
Laser Retroreflector Array (Sentinel-6) | Operational
| | n/a | |
LRI
Laser Ranging Instrument | Operational
| Inter-satellite ranging measurement to picometer level to be used to estimates for global models of the mean and time variable Earth gravity field. | n/a | |
MWI
Microwave Instrument | Operational
| Includes BlackJack Global Positioning System (Turbo Rogue Space Receiver) and High Accuracy Inter-satellite Ranging System (aka K-band Ranging System) for Inter-satellite ranging system estimates for global models of the mean and time variable Earth gravity field. | n/a | |
RRA
Retroreflector Array | Operational
| Satellite laser ranging for geodynamic measurements. | n/a | |