ISRO to launch its SpaDeX mission today - World News Network

New Delhi [India], December 30 (ANI): The Indian Space Research Organisation (ISRO) will launch its year-end mission, the “Space Docking Experiment” (SpaDeX), on Monday, said the organisation.
The mission will be launched precisely at 10:00:15 pm from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh.
“Tonight at precisely 10:00:15 PM, PSLV-C60 with SpaDeX and innovative payloads are set for liftoff. SpaDeX (Space Docking Experiment) is a pioneering mission to establish India’s capability in orbital docking, a key technology for future human spaceflight and satellite servicing missions. Liftoff: 30 Dec, 10:00:15 PM (22:00:15 hours),” ISRO posted on X.
The PSLV-C60 rocket will be launched from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh on Monday.
Preparations have been made to launch the PSLV-C60 rocket. ISRO is ready with all the arrangements. For the ‘Spatial’ project, which will launch two small spacecraft, ISRO is making all the arrangements to launch the PSLV-C60 rocket from the Sriharikota launch pad.
The “Space Docking Experiment” (SpaDeX) mission will use the PSLV-C60 rocket.
As per the ISRO, the primary objective of the SpaDeX mission is to develop and demonstrate the technology needed for rendezvous, docking, and undocking of two small spacecraft (SDX01, which is the Chaser, and SDX02, the Target, nominally) in a low-Earth circular orbit.
“In addition, SpaDeX, because of its small size and mass, is even more challenging due to the finer precision required for the rendezvous and docking maneuvers compared to docking two large spacecraft. This mission will be a forerunner for autonomous docking needed for future lunar missions like Chandrayaan-4 without the support of GNSS from Earth,” ISRO said in a statement.
Like all ISRO satellites in low-Earth orbit, both the SpaDeX spacecraft carry a differential GNSS-based Satellite Positioning System (SPS), which provides PNT (Position, Navigation, and Timing) solutions for the satellites.
“In SpaDeX, a novel RODP processor is included in the SPS receiver, which allows accurate determination of the relative position and velocity of the Chaser and the Target. By subtracting the carrier phase measurements from the same GNSS satellites in both Chaser and Target SPS receivers, highly accurate relative states of the two satellites are determined. The VHF/UHF transceivers in both satellites aid this process by transferring the GNSS satellite measurements from one satellite to the other. Hardware and software test beds, including closed-loop verifications, were carried out to characterise the RODP performance,” the statement said.
The SpaDeX spacecraft were designed and realized by the UR Rao Satellite Centre (URSC) with the support of other ISRO centers (VSSC, LPSC, SAC, IISU, and LEOS). The spacecraft, in its orbital phase, will be controlled from ISTRAC using ISRO ground stations and other externally hired ground stations. (ANI)

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