IGARSS 2011, Vancouver / Canada, July 24 – 29, 2011 The joint TerraSAR-X/TanDEM-X Mission Planning System F. Mrowka, M. P. Geyer, C. Lenzen, A. Spörl,

IGARSS 2011, Vancouver / Canada , July 24 – 29, 2011

The joint TerraSAR-X/TanDEM-X Mission Planning SystemF. Mrowka, M. P. Geyer, C. Lenzen, A. Spörl, T. Göttfert, E. Maurer,

M. Wickler, B. Schättler

IGARSS 2011, Vancouver, 29-July-2011

IGARSS 2011, Vancouver / Canada The Joint TerraSAR-X / TanDEM-X Mission Planning System Slide 2

Overview

The TanDEM-X Mission Planning Challenges

Two Satellites and Two Missions

Mutual Illumination Risks

Sync-Warning Handling

From the TerraSAR-X (TSX-1 Satellite only: MPS-tsx) to the TanDEM-X (both satellites/both Missions: MPS-tsm-tdm) Mission Planning System

Before Launch

Commissioning Phase

Operational Phase

Outlook


Challenges: Two Satellites – Two Missions



TSX-1CmdGenConstraint-Check, etc

Order-Ingestion

TSM-R2CC

Order-Ingestion

TSM-Order-

Ingestion

MPS-tsx

MPSDB



MPS-tsm-tdm

TSX-1CmdGen

TSM-R2CC

TDX-1CmdGen

TSM-Order-

Ingestion

MPSDB

Constraint-Check, etc





MPS-tsm-tdm

TSX-1CmdGen

TSM-R2CC

TDX-1CmdGen

TSM-Order-

Ingestion

TDM-Order-

Ingestion

TDM-R2CC

TAP

MPSDB


Challenges: Mutual Illumination RisksInput provided every 12h by the FDS

For nominal TerraSAR-X-Acquisitions:

TSX-1 or TDX-1 is selected at first in respect to the exclusion zones

For nominal TanDEM-X Acquisitions:

Selection of the active Satellite at first in respect to the exclusion zones

0°

30°

50°

65°

“TDX may not transmit in

desc. orbit”

exclusionzones

(example)

TSX-1

TDX-1

“TSX may not transmit in asc. orbit”

TSX-1 TDX-1


Challenges: Sync-Warnings – The course timing

Sync-Warning-Opportunity 1Sync-Warning-Opportunity 2

TSX-DT

t

SWOC-Result

SWmax. 53min

SWTDX

TSX


Challenges: Sync-Warnings – The precise timing

TDMDT

t

SW

SWTDMDT

TDX

TSX

DataTake-StartTime-Correction Disabled

Disabled Disabled

Disabled

TSMDT

Enabled


Challenges: Sync-Warnings - Example


Challenges

Power-Thermal-ModelMPS-tsx: Orbit-Usage-Model for one Orbit onlyMPS-tsm-tdm (To fulfill the demanding TanDEM-X needs):

Thermal-Model: more then 30 independent accumulating time-frames for modeling data acquisition and data downlinkPower-Model: elaborated Power-Usage-Model was implemented to predict the on-board battery-charge-level (consumer: Instrument incl. several Warm-Up-Levels, X-Band-Downlink-Transition, etc. and supply: taking into account eclipse times, satellite-attitude. etc.)

Enhanced priority concept implements a flexibility for GlobalDEM-acquisitionsDown-Link-Delay for TDX-1 and Downlink from both satellites to one station contact

=> MPS-tsm-tdm has the same availability and performance requirements as the MPS-tsx


MPS-tsx to MPS-tsm-tdm: Before TDX-1Launch

TSX-1CmdGenConstraint-Check, etc

Order-Ingestion

TSM-R2CC

Order-Ingestion

TSM-Order-

Ingestion

MPS-tsx MPSDB

MPS-tsm-tdm

TSX-1CmdGen

TSM-R2CC

TDX-1CmdGen

TSM-Order-

Ingestion

TDM-Order-

Ingestion

TDM-R2CC

TAP

MPSDB

Space-Craft-Simulator

On-ground

After TDX-1 Launch ?

TSX-1

TDX-1


MPS-tsx to MPS-tsm-tdm: Commisioning Phase

June‘10 July‘10 Aug‘10 Sep‘10 Oct‘10 Nov‘10 Dec‘10

EarlyOrbitPhase

Grg SegmentCheckout

Bi-static Commissioning Phase

20 km FormationTDX Orbit Drift16.000 km 20 km Close Helix-Formation 300-400 mLaunch

21 June

First SAR Image 24 June (MET +3.6)

First DEM 16 July (MET +25)

TDX Monostatic Comm. Phase

6 Months Commissioning Phase

First close formation DEM 19 October (MET +124)

First bi-static SAR image 8 August (MET +48)

20 km FormationTDX Orbit Drift16.000 km 20 km


MPS-tsx to MPS-tsm-tdm: Commissioning Phase

Mono-Static-Commissioning-PhaseMPS-tsx:

Minor modification to identify TanDEM-X acquisition requests

Ground-Segment ready to support two mission planning systems

Routing of nominal TerraSAR-X Orders to MPS-tsx and specifically ordered ones for TDX-1 to MPS-tsm-tdm TSX-1 part of TanDEM-X orders need to be ordered as System-Orders via MPS-tsx

MPS-tsm-tdm:TSX-1 commands verified on space-craft-simulator (occasionally)

PGS

TanDEM Orders

TerraSAR-X User Orders

TanDEM Production Controlpc-tdm-acq

TerraSAR Production Controlpc-tsx

DIMSUser Information Services

(EOWEB)

TanDEM Mission Planning Interface

pi-tdm-mpi

TerraSAR TSX Mission Planning Interface

pi-tsx-mpi

MOS

Commissioning TanDEM / TerraSAR Mission Planning System

MPS-tsm-tdm

TDX SatelliteTSX Satellite

TSX Timeline with TerraSAR

Data Takes

TDX Timeline with TerraSAR and TanDEM (TDX

channel) Data Takes

TerraSAR-X System Orders

Operational TerraSAR Mission Planning System

MPS-tsx

TerraSAR TSX / TDX Mission Planning Interface

pi-tsx-tdx-mpi

Operational TerraSAR-X Orders

for TSX(incl. System Orders)

Commissioning TerraSAR-X Orders for TDX (and TSX)

(incl. System Orders)

TanDEM Orders(TSX and TDX)

TSX Timeline with TerraSAR and TanDEM (TSX channel) Data

Takes

On-Ground TSX Simulator

„New“ IOCS Request-to-Command-ConverterR2CC-tsm-tdm

IOCS Request-to-Command-ConverterR2CC-tsm

IOCS

Pursuit MonosticTanDEM Orders

TanDEM TSX Channel duplicated

to TerraSAR System Order


MPS-tsx to MPS-tsm-tdm: Commisioning Phase


EarlyOrbitPhase

Grg SegmentCheckout



21 June








MPS-tsx to MPS-tsm-tdm: Commissioning Phase

PGS

TanDEM Orders

TerraSAR-X User Orders

TanDEM Production Controlpc-tdm-acq

TerraSAR Production Controlpc-tsx

DIMSUser Information Services

(EOWEB)

TanDEM Mission Planning Interface

pi-tdm-mpi

Upgraded TerraSAR TSX / TDX Mission Planning Interface

pi-tsx-mpi

MOS

Commissioning TanDEM / TerraSAR Mission Planning System

MPS-tsm-tdm

TDX SatelliteTSX Satellite

TSX Timeline with TerraSAR

Data Takes

TDX Timeline with TerraSAR and TanDEM (TDX

channel) Data Takes

TerraSAR-X System Orders

Operational TerraSAR Mission Planning System

MPS-tsx

TerraSAR TSX / TDX Mission Planning

Interfacepi-tsx-tdx-mpi

Operational TerraSAR-X Orders

for TSX(incl. System Orders)

Commissioning TerraSAR-X Orders

for TDX (incl. System Orders)

TanDEM Orders(TSX and TDX)

TSX Timeline with TerraSAR and TanDEM (TSX channel) Data

Takes

On-Ground TSX Simulator

„New“ IOCS Request-to-Command-ConverterR2CC-tsm-tdm

IOCS Request-to-Command-ConverterR2CC-tsm

IOCS

Close-Formation without full-operational MPS-tsm-tdm not possible:Sync-WarningsExclusion-Zones

Operationalisation of MPS-tsm-tdm:Switch of MPS-tsx

Routing of all TerraSAR-X orders to MPS-tsm-tdm

TSX-1 commands out of MPS-tsm-tdm sent to the TSX-1 satellite


MPS-tsm-tdm: Operationalization / Close Formation Change

07.10.2010

For

ma-

tion change

2 3 4 5 6 7 8 9 10 11 1 2 3 4

MP

S-

tsm-tdm

Ope

ration-alisation

5 6 7 8 9 10 11

18.10.2010

W W W W

FF

R

W W

Kiru

na

Sync W

arn, ISL

05.10.2010

Cycle 8Cycle 6

TSX: extend. timeline

First tim

elines with updated

Gro

und Segm

ent

Cycle 7

1 2 3 4 5 6 7 8 9 10 11

29.10.2010

W W

NS

GInuvik

Statisitical D

Ts

TS

XX

DA

ST

SX

X D

AS

Statistical DTs

TS

XX

DA

S

TS

M R

elease on

2 Satellite

s

TS

XA

SM

Test Bi-

CP

TDX: operational DTs

W

TS

X E

xc

l. Zo

ne

Te

st

04.10.2010

26.09.2010

First bi-static image


MPS-tsm-tdm: Bistatic Commisioning Phase


EarlyOrbitPhase

Grg SegmentCheckout



21 June








MPS-tsm-tdm: Full automatic operations

Since 2010-12-14 MPS-tsm-tdm is running full-automatic and is showing

Same or better performance and

A similar reliability as MPS-tsx!

Some Numbers

Number of .. MPS-tsx MPS-tsm-tdm

Constraints Around 100 Around 200

Datatakes (candidates) per day

Usually less then 500 Often more then 4000

Internal Profile-Pieces Usually less then 10 000 Often more then 100 000

Commands per day Usually less then 1000 Often more then 3000


MPS-tsm-tdm: Operations

A 24h snap-shot of a command timeline. In this time frame were commanded: • 52 replays (27 TSX-1 and 25 TDX-1) in 33 different downlink contacts to 8 different ground stations• 98 acquisitions (47 on TSX-1 and 51 on TDX-1) comprising 26 TanDEM-X pairs• 31 Sync-Warnings


Inuvik

O‘Higgins

Kiruna

Chetumal

TanDEM-X Ground Station Network

DLR Neustrelitz for TerraSAR-X


MPS-tsm-tdm: Operations


Outlook

Currently fixed Planning- and Command-Generationnominal time between last order reception and first possible downlink between 6 and 18 hours (except special short notice planning 1h))

event driven planning (just with order reception) and command generation, if confirmed uplink is demanded

Specific for optical sensors

Cloud-Forecast-Handling

Support of constellations

Generic Mission-Planning-System


Outlook

Future Missions

FireBIRD (2013)

IR-Sensor

Two Satellites in Constellation

EnMAP (2015)

Hyper-Spectral-Imager

New Feature: Cloud-Handling

TerraSAR-X 2 (2015)

Probably with TSX-1 and TDX-1 in Constellation

Event-Driven-Planning – Short-Notice-Command-Generation

TanDEM-L (net 2019)

On-Board-Planning?

Mt. St. Helens, USA2010-08-13T01:54:09


Power Modeling I

Energy conflict

Lost Values (unused energy)

Fill Level(state of charge)

Upper Limit (battery capacity)

Lower Bound

Conflict on fill level

Solar panels charging the battery

Battery full Energy consumption greater

than supplySolar panels charging the battery

Battery discharging


Power Modeling II

Charge level without warm-up

Charge level with warm-up

Warm-up of RS1 instrument

Consumption profile

Charge level


SSMM-Modelling

DL

1 T

DX

-1D

L1

TSX

-2

Datatake 1

Datatake 2

Datatake 3

Datatake 4

Datatake 5

Datatake 6

DL

1 T

SX-1

DL

1 T

DX

-2D

L1

TSX

-3D

L1

TD

X-3

Groundstation GS Groundstation

DL

1 T

SX-4

DL

1 T

DX

-4

DL

1 T

DX

-1

DL

1 T

DX

-2

DL

1 T

SX-5

DL

1 T

DX

-5

DL

1 T

DX

-3

DL

1 T

SX-6

DL

1 T

DX

-6D

L1

TD

X-4

DL

1 T

DX

-5D

L1

TD

X-6

TDX-1 memory

TSX-1 memory

Documents

IGARSS 2011, Vancouver / Canada, July 24 – 29, 2011 The joint TerraSAR-X/TanDEM-X Mission Planning System F. Mrowka, M. P. Geyer, C. Lenzen, A. Spörl,