What are Electrical Ground Support Equipments (EGSE)?

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Oct 6, 2022

Electrical Ground Support Equipment (EGSE) are tools that are used by satellites & engineers on the ground to test and validate the integral electrical functions of a satellite or a spacecraft before launch. EGSE consists of hardware as well as software elements that are used to conduct tests of the satellite to ensure compatibility of all electrical components with the satellite.

An EGSE system consists of three primary subsystems. They are listed below:

On Board Interfaces: A satellite consists of various systems onboard to make it function efficiently such as power, data handling, communications & onboard computers. These onboard interfaces differ with respect to physical, electrical, and intended prototype levels. Hence, engineers need to validate and inspect these parameters during the development & validation phase before the launch of a satellite.

RF Interfaces: Testing a satellite or a spacecraft’s RF interfaces is a vital stage of spacecraft assembly, integration, and testing pre-launch.  The spacecraft or a satellite’s RF interface are connected to an RF SCOE (Special Check out Equipment) utilizing a fixed cabled connection which includes a modulator/demodulator on the RF SCOE that allows direct control for monitoring the spacecraft. RF interfaces provide telemetry, & also perform fully automated S-, X-, Ku- and Ka-band measurements in the TT&C (Telemetry, Tracking & Command) during testing at a given test facility.

Software: To control all EGSE systems and view their test results, the software is used. The software allows the operators/Engineers to have control over a unit undergoing test by running automated test scripts to speed up testing, monitor real-time status, perform data processing of recorded or simulated data and visualize it in several different methods.

Space Missions - A list of all Space Missions


Name Date
Altius 01 May, 2025
Arctic Weather Satellite (AWS) 01 Mar, 2024
Eutelsat Quantum 30 Jul, 2021
Sentinel 6 21 Nov, 2020
Cheops 18 Dec, 2019
EDRS 06 Aug, 2019
BepiColombo 20 Oct, 2018
Aeolus 22 Aug, 2018
Sentinel 3B 25 Apr, 2018
Sentinel 5 13 Oct, 2017


Name Date
INSAT-3DS 17 Feb, 2024
XPoSat 01 Jan, 2024
Aditya-L1 02 Sep, 2023
DS-SAR 30 Jul, 2023
Chandrayaan-3 14 Jul, 2023
NVS-01 29 May, 2023
TeLEOS-2 22 Apr, 2023
OneWeb India-2 26 Mar, 2023
EOS-07 10 Feb, 2023
EOS-06 26 Nov, 2022


Name Date
XRISM 07 Sep, 2023
SLIM 07 Sep, 2023
ALOS-3 07 Mar, 2023
ISTD-3 07 Oct, 2022
HTV9 21 May, 2020
HTV8 25 Sep, 2019
HTV7 23 Sep, 2018
HTV6 09 Dec, 2016
HTV5 19 Aug, 2015
HTV4 04 Aug, 2013


Name Date
NEO Surveyor 01 Jun, 2028
Libera 01 Dec, 2027
Europa Clipper 10 Oct, 2024
SpaceX CRS-29 09 Nov, 2023
Psyche 13 Oct, 2023
DSOC 13 Oct, 2023
Psyche Asteroid 05 Oct, 2023
Expedition 70 27 Sep, 2023
SpaceX Crew-7 25 Aug, 2023
STARLING 18 Jul, 2023