What is DORIS satellite ranging?Please tell in detail.

Question

anonymous · Answer

Jason-1
Jason-1 DORIS instrument
The DORIS instrument onboard Jason-1 provides real-time location and precise orbit determination. DORIS measurements are also used for geophysical studies, in particular through the International DORIS Service (IDS). DORIS is a dual-frequency instrument able to determine atmospheric electron content.

DORIS orbitography beacons transmit signals at two separate frequencies (2036.25 MHz and 401.25 MHz) to the satellite. The receiver onboard the satellite analyzes the received signal frequencies to calculate its velocity relative to Earth. This velocity is fed into orbit determination models to derive the satellite's position on orbit to within 2 centimeters on the radial component.

anonymous · Answer

thanks ali .I found this very useful.

anonymous · Answer

its my pleasure