2014 workshop on spacecraft flight software 1 pasadena, ca, december 16-18, 2014 icon end-to-end...

2014 Workshop on Spacecraft Flight Software 1 Pasadena, CA, December 16-18, 2014

ICON End-To-End Operations Philosophy

Will Marchant, Manfred Bester, Carl Dobson, Scott England, Stewart Harris, Mark Lewis, Will Rachelson,

Bryce Roberts, Irene Rosen, and Ellen Taylor

Space Sciences LaboratoryUniversity of California, Berkeley

University of California, BerkeleySpace Sciences Laboratory


FAST RHESSI

CHIPS

UCB/SSL operated 10 NASA Explorer spacecraft over a period of more than 20 years (7 are currently operational).

UCB/SSL operated 10 NASA Explorer spacecraft over a period of more than 20 years (7 are currently operational).

EUVE

THEMIS / ARTEMIS

NuSTAR

Mission Operations Center BGS 11-m

ICON

ICON, the 11th spacecraft, is scheduled for launch in 2017.

ICON, the 11th spacecraft, is scheduled for launch in 2017.

Operations History at UCB/SSL


Multi-mission Operations Center

Berkeley Ground Station

11-m S-band antenna and equipment racks

Operations Facilities at UCB/SSL


S/C

FUV

MIGHTI

EUV

IVM

ICON Mission Implementation


Photo Courtesy of Orbital Sciences Corporation


Measure altitude profiles of airglow near the Earth limb at visible and UV wavelengths via remote sensing, and measure in-situ ion densities and flows near the local magnetic field line to determine the connection between terrestrial weather and space weather.

300 km

200 km

100 km

ICON Mission Science Objectives


Project ManagementSystems EngineeringS&MAUV InstrumentsPayload ElectronicsMission/Science Ops

MIGHTI Neutral Wind Interferometer (2)

Ion Velocity Meter (2)

LEOStar-2 SpacecraftObservatory I&T

Naval Research LaboratoryNaval Research Laboratory

UT-DallasUT-Dallas

GSFC – Explorers OfficeKSC – LV Services

UC BerkeleyUC Berkeley

Orbital Sciences CorporationOrbital Sciences Corporation

NASANASA

Payload Structure

Centre Spatial de LiègeCentre Spatial de Liège

FUV Calibration

Space Dynamics LabSpace Dynamics Lab

Instrument SupportCameras/electronics

Payload I&T

ATK-MagnaATK-Magna

ICON Participating Institutions and Team Roles


ICON Mission Operations System Overview


Most internal MOC systems and interfaces required for ICON are operational already within the multi-mission support environment.

All ICON network interfaces are already used with other missions.

New operational flight dynamics tools are added for ICON target processing, and for GPS based orbit determination and attitude maneuver QA.

Science operations planning and pipeline processing software tools are adapted from existing software.

IT Security Plan, physical and network controls are in place already and are regularly audited by the GSFC IONet Security Office.

Mission Operations System Architecture Overview


Instrument Simulator

Spacecraft Simulator

ITOS Observatory

CMD & CTRLInstrument

Spacecraft Simulator

Spacecraft Instrument TLM Source

Packet Archive MySQL DB

Ground Station

Orbiting Observatory

Standardized interfaces at the CCSDS transfer frame layer allow usage of operational software from the earliest stages.

Disk Storage

Using Common Flight-like Interfaces


Ground Systems & Operations Test-like-you-fly philosophy, follows NuSTAR model used at UCB Box level to integrated systems level for all operations functions Early interface and data format verification via simulators End-to-end network data flows and pass simulations Science data flows from instrument to bus to ground and SOC

pipeline

Strive for Realistic Testing

I&T Support Portable MOC and BGS ground systems

used as EGSE throughout I&T UCB flight controllers participate as

console operators in all I&T phases


Taking advantage of fully integrated ground system to support spacecraft bus and instrument development

Participating in all phases from early flight software and hardware development to full-up observatory testing

Applying lessons learned: get involved early

Taking the MOC to the ICON Spacecraft

MOC Supports Development, Integration & Testing


EM development feeds simulator delivery Software emulator: ICP-CE, software based emulator for IVM Payload emulator: also hosting FSW, with simulated instrument data Hardware simulators: EM1, EM2, EM3 (hosting FSW)

Specifications

ICP-CECommunication

Emulator

ITOS Workstation

DCB PCB

LVPS TEC P.S.

Engineering ModelDevelopment

S/C Sim. EGSE

PCB

TPS

DCB

ICP-EM1

MIGHTI ETUat NRL

PCB

LVPS

DCB

ICP-EM2

FUV FMat CSL

PCB

TPS

DCB

ICP-EM3

LVPS

ICP ETUTVAC Test

DCB

P/ L Emulator

S/C I&Tat Orbital

DCB

FSWDevelopment

Chassis Harness

PayloadEngineering

Test Bed

EUV Testat UCB

IVM Testat UTD *EMC Testing

Build 1 Build 2 Build 3 Build 4 Build 5,6FSW

Instrument Simulators and EM Development


Converting legacy databases, scripts and telemetry pages to ITOS

ITOS supported NuSTAR & ICON flight software development at Orbital

ITOS will also be used for instrument development and testing

Key strategy is to use standard CCSDS frames early in the development phase with small simulators serving as temporary stand-ins for not yet existing flight systems and software

Configuration management via Git Data flows between FlatSat and MOC operational

ITOS Configuration and Testing


Use integrated MOC software (ITOS, FrameRouter, BTAPS) during earliest stages of I&T

Provide simple instrument simulators and interface modules to allow CCSDS transfer frame level interfacing to ITOS very early on

Steep ramp-up to get close to flight-like environment Don’t be afraid of developing software in-house, but know

where the limitations are of what makes sense Integrate configuration management for all hardware and

software solutions Try to have FlatSat available with interfaces to the MOC

Results & Lessons Learned


Successfully applied lessons learned from previous missions

Naturally, project and spacecraft contractor were skeptical about UCB proposal to deliver turn-key command and control system with hardware and software for I&T, but concerns were dispersed relatively quickly

Operations team involvement beginning with ITOS configuration 2.5 years before launch provides excellent training in preparation for on-orbit operations

Sizeable effort early on for operations team, but transition to on-orbit operations are very easy and low risk

Summary


Backup Slides


The U.C. Berkeley Space Sciences Laboratory (SSL) Multi-mission Operations Center (MOC) provides support for Caltech's NuSTAR mission and will operate the ICON mission (scheduled for launch in 2017.)

The MOC uses the Integrated Test and Operations System (ITOS) developed by NASA's GSFC and commercialized by The Hammers Company.

The MOC supplied ITOS workstations and support for the NuSTAR instrument and spacecraft development efforts. This led to very smooth observatory integration, launch operations, and on orbit operations.

ICON is following in those footsteps with some enhancements from lessons learned on the NuSTAR program.

This talk will provide a brief overview of the suite of operations tools and discuss the advantages, and disadvantages, of using them for early flight software development and for integration and test activities.

Abstract

2014 workshop on spacecraft flight software 1 pasadena, ca, december 16-18, 2014 icon end-to-end...

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