Gravity and Climate Experiment Follow-On (GRACE-FO) has been successfully launched. After its launch, it has completed its first mission as well in less than three weeks. The primary mission of GRACE-FO was to help in explaining the performance of the microwave ranging system. A microwave ranging system’s function is to facilitate with a unique measurement which tells about how mass moves from one place to another around the planet.
Twin GRACE-FO satellites were carefully guided to its operational orbit formation which lies near about 220kms apart during its initial phase. Later the spacecraft system was monitored, and it was a found that its performance is meeting the expected level. Then the two primary instruments: accelerometer and microwave ranging system, both were activated. Accelerometer helps in measuring all the forces on satellite apart from gravity. These forces can be because of some solar radiation pressure.
The distance measurements which are received from a GRACE-FO microwave ranging system is highly accurate and precise.
In single orbit of the satellites, some gravity variation on earth is witnessed, and these variations are caused