Telco EGSE (Power & TMTC SCOE) - C&G-6A.069-Telco EGSE (Power & TMTC SCOE)

  • Status
    Completed
  • Status date
    2022-12-05
  • Activity Code
    6A.069
Objectives

Telco EGSE TMTC SCOE:

The overall function of the Atos Baseband TM/TC SCOE and TM/TC Crossbar is to provide validated interface hardware and software functions to interface baseband TM and TC hardware with the remaining EGSE infrastructure. This includes high-speed baseband data interfaces to On-Board Computers, COMMS elements such as Transponders and Modulators, Security Units, etc. Further applications of the envisaged functions are EGSE systems on subsystem level, which require baseband TM/TC interfaces and functions based on these, as well as Umbilical Test Systems used at the launch location, prior to connecting the actual spacecraft. 

Telco EGSE Power SCOE:

The Power Special Check-Out Equipment (SCOE) is part of the electrical ground Support Equipment that provides via the current Atos UniverSAS® product the required electrical power, simulates the real spacecraft battery and the solar array behaviour and provides monitoring of some onboard electrical parameters. It is used during all phases of the spacecraft integration and test, i.e. from Avionics Test Bench (ATB) and Service Module (SVM) integration up to the launch campaign. The main objective is to extend the capabilities of the Atos UniverSAS® product to cover also different Telecom satellite requirements through generic firmware and software solutions.

Challenges

Telco EGSE TMTC SCOE:

The overall function of the Atos Baseband TM/TC SCOE and TM/TC Crossbar is to provide validated interface hardware and software functions to interface baseband TM and TC hardware with the remaining EGSE infrastructure. This includes high-speed baseband data interfaces to On-Board Computers, COMMS elements such as Transponders and Modulators, Security Units, etc. Further applications of the envisaged functions are EGSE systems on subsystem level, which require baseband TM/TC interfaces and functions based on these, as well as Umbilical Test Systems used at the launch location, prior to connecting the actual spacecraft. 

Telco EGSE Power SCOE:

The Power Special Check-Out Equipment (SCOE) is part of the electrical ground Support Equipment that provides via the current Atos UniverSAS® product the required electrical power, simulates the real spacecraft battery and the solar array behaviour and provides monitoring of some onboard electrical parameters. It is used during all phases of the spacecraft integration and test, i.e. from Avionics Test Bench (ATB) and Service Module (SVM) integration up to the launch campaign. The main objective is to extend the capabilities of the Atos UniverSAS® product to cover also different Telecom satellite requirements through generic firmware and software solutions.

Benefits

Telco EGSE TMTC SCOE:

  • Cost effective COTS HW elements and highly customizable SW layer

  • Support for SBDL/RS422 and LVDS electrical interfaces

  • Powerful and flexible interface between specific hardware and software layers

  • Broad range of EGSE functions can be supported

  • Support for more TM and TC baseband interfaces in parallel

  • Provision of a sync pulse for CADU ASM detection

  • Consistent and feature rich Software, conveniently adjustable for project needs

  • Support for various TM encodings (no-coding, convolutional, Reed-Solomon, Turbo codes, optionally LDPC) and rates

  • Local MMI, remote control by CCS

  • TM Transfer Frame to TM packet conversion

  • CLTU Analysis and Plausibility Check function

  • TM Simulation/generation function

  • Archiving of all TM/TC data, extraction/retrieval in human-readable format

  • External software interfaces supporting CCS/EDEN, NDIU, CFDP protocols

  • Spw replay file generation tool integration 

  • CFDP TC forwarding through CCS

  • HDR4Gx driver update

Telco EGSE Power SCOE:

  • Multiple UniverSAS® with Master/Slave functionality

  • The capability of having multiple UniverSAS® in parallel to address more than 18 kW

  • S3R and the maximum power point tracking (MPPT) ready and available in UniverSAS® hardware platform.

  • Hardware/firmware/software modifications and enhancements for Telecom Satellites AIT environment:

  • Battery simulator

  • Solar Array System

  • PCDU simulator

  • Higher power efficiency.

  • Less ripple and less spikes for SAS, BS and BCE.

  • Higher telemetry rates with a high number of power sections rate.

  • Generic automated built in self-test framework

  • Pyro board with built-in snapshot

Payload Simulator Uninterrupted Power Supply Support

Features

Telco EGSE TMTC SCOE:

  • FPGA IP core for USB communication: Allow reliable long-duration operation over the USB interface to the host computer at the required data rates and latencies

  • FPGA IP cores for the TM/TC Crossbar function. Cover all TM/TC Crossbar requirements as in the legacy implementation, extend the functions to support longer ASMs (e.g. needed for LDPC), raw bit-stream output, graceful handling of almost noise CLTUs

  • Flexible level convertors. Modular approach removing or reducing custom wiring and mechanical fixing

  • TM/TC-FE Service Interface. Migrate the lower levels of the software stack to USB communication. Extend the API functions to more parameter and functions.

  • TMTC SCOE Controller Software. Create the top-level TMTC SCOE Software, allowing TM and TC processing in various standard formats, display, routing, archiving and retrieval of data, support for external interfaces (e.g. CCS).

  • Spw replay file generation tool integration. SpaceWire replay file generation tool will flexibly support project needs. 

  • CFDP TC forwarding through CCS. The CFDP protocol involves Protocol Data Unit (PDU) transmissions in both directions. For testing purposes CFDP TCs can be delayed with a configurable delay.

  • HDR4Gx driver update. The HDR4Gx driver is updated to the Atos GSE4 framework.

Telco EGSE Power SCOE:

  • UniverSAS® Master Slave Functionality. Allow operation of at least 32 SAS channels

  • Synchronisation across multiple UniverSAS®. Allow synchronisation of at least 32 SAS channels

  • Higher Telemetry Data Rate. The TM packets including data for at least 32 SAS channels in master and slave configuration have to be delivered in a cycle time of less than 500ms. 

  • Sequential Switched Shunt Regulator (S3R) support. Handle S3R with a toggling frequency of up to 12,5kHz. 

  • Constant current slope behaviour of UniverSAS®. Current slope dI/dU for output current between Isc and Imp shall be adjustable for a section with a range of 1/Rs from zero to 5% of Isc/Voc.

  • MPB Control loop enhancement for load operation. For generic load simulation inside a Payload Load Simulator (PLLS) the UniverSAS® Electronic Loads must also be capable to support the following modes: Constant Current (CC), Constant Power (CP), Constant Resistance (CR).

  • SAS Ripple and Spikes. Ripple ≤ 200mVpp @ 20 MHz bandwidth while retaining a low output capacitance ≤ 250nF. 

  • BS/BCE Ripple and Spikes. Ripple ≤ 50mVpp @ 20 MHz bandwidth

  • Generic automated built in self-test framework. The objective of the full self-test is to validate the function at the spacecraft interface against potential issues or defect components.

  • Pyro board with built in snapshot. Snapshot feature will allow to analyze safety triggered events for the time period before and for some period after the event occurs.

PLS UPS – Payload Simulator Uninterrupted Power Supply

Control implementation of a separate load drawer which will be used to dissipate the remaining energy to allow any excess power from the S/C.
 

System Architecture

Telco EGSE Power SCOE – Architecture:

Plan

High Level Project Plan with milestones

WP1000 PM / QM:
   WP1100    Generic automated built in self-test framework
   WP1200    Pyro board with built-in snapshot
   WP1300    PLS UPS
   WP1400    CCSDS FILE DELIVERY PROTOCOL (CFDP), CLASS 2

WP2000 Requirement Analysis (MS#1)
   WP2100    Generic automated built in self-test framework
   WP2200    Pyro board with built-in snapshot
   WP2300    PLS UPS
   WP2400    CCSDS FILE DELIVERY PROTOCOL (CFDP), CLASS 2

WP3000 Design (MS#2)
   WP3100    Generic automated built in self-test framework
   WP3200    Pyro board with built-in snapshot
   WP3300    PLS UPS
   WP3400    CCSDS FILE DELIVERY PROTOCOL (CFDP), CLASS 2

WP4000 Implementation (MS#3)
   WP4100    Generic automated built in self-test framework
   WP4200    Pyro board with built-in snapshot
   WP4300    PLS UPS
   WP4400    CCSDS FILE DELIVERY PROTOCOL (CFDP), CLASS 2

WP5000 Finalization (MS#4)
   WP5100    Generic automated built in self-test framework
   WP5200    Pyro board with built-in snapshot
   WP5300    PLS UPS
   WP5400    CCSDS FILE DELIVERY PROTOCOL (CFDP), CLASS 2

Current status

The project has reached the final review and the implemented TMTC and Power features in the scope of this activity are validated and available for the customers. 

Related links
Atos - Electrical Ground Support Equipment (EGSE) - Comprehensive satellite tes…

Documentation

Documentation may be requested

Prime Contractor

Last update
2024-04-16 06:09