The document discusses the challenges of planning missions for the TerraSAR-X and TanDEM-X satellites. It describes how the Mission Planning System had to be enhanced to handle planning for two satellites with different missions. Risks like mutual illumination and sync warnings between the satellites are considered. The system was tested during commissioning phases and is now operating fully automatically.

1. The joint TerraSAR-X/TanDEM-X Mission Planning System F. Mrowka, M. P. Geyer, C. Lenzen, A. Spörl, T. Göttfert, E. Maurer, M. Wickler, B. Schättler I GARSS 2011, Vancouver, 29-July-2011

3. Challenges: Two Satellites – Two Missions

6. Challenges: Two Satellites – Two Missions

9. Challenges: Sync-Warnings – The course timing Sync-Warning-Opportunity 1 Sync-Warning-Opportunity 2 TSX-DT t SWOC- Result SW max. 53min SW TDX TSX

10. Challenges: Sync-Warnings – The precise timing TDM DT t SW SW TDM DT TDX TSX DataTake- StartTime- Correction Disabled Disabled Disabled Disabled TSM DT Enabled

11. Challenges: Sync-Warnings - Example

14. MPS-tsx to MPS-tsm-tdm: Commisioning Phase June‘10 July‘10 Aug‘10 Sep‘10 Oct‘10 Nov‘10 Dec‘10 Early Orbit Phase Grg Segment Checkout Bi-static Commissioning Phase 20 km Formation TDX Orbit Drift 16.000 km  20 km Close Helix-Formation 300-400 m Launch 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 Formation TDX Orbit Drift 16.000 km  20 km

16. MPS-tsx to MPS-tsm-tdm: Commisioning Phase June‘10 July‘10 Aug‘10 Sep‘10 Oct‘10 Nov‘10 Dec‘10 Early Orbit Phase Grg Segment Checkout Bi-static Commissioning Phase 20 km Formation TDX Orbit Drift 16.000 km  20 km Close Helix-Formation 300-400 m Launch 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)

19. MPS-tsm-tdm: Bistatic Commisioning Phase June‘10 July‘10 Aug‘10 Sep‘10 Oct‘10 Nov‘10 Dec‘10 Early Orbit Phase Grg Segment Checkout Bi-static Commissioning Phase 20 km Formation TDX Orbit Drift 16.000 km  20 km Close Helix-Formation 300-400 m Launch 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)

22. TanDEM-X Ground Station Network Inuvik O‘Higgins Kiruna Chetumal DLR Neustrelitz for TerraSAR-X

23. MPS-tsm-tdm: Operations

26. Mt. St. Helens, USA 2010-08-13T01:54:09

28. 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 supply Solar panels charging the battery Battery discharging

29. Power Modeling II Charge level without warm-up Charge level with warm-up Warm-up of RS1 instrument Consumption profile Charge level

30. SSMM-Modelling DL1 TDX-1 DL1 TSX-2 Datatake 1 Datatake 2 Datatake 3 Datatake 4 Datatake 5 Datatake 6 DL1 TSX-1 DL1 TDX-2 DL1 TSX-3 DL1 TDX-3 Groundstation GS Groundstation DL1 TSX-4 DL1 TDX-4 DL1 TDX-1 DL1 TDX-2 DL1 TSX-5 DL1 TDX-5 DL1 TDX-3 DL1 TSX-6 DL1 TDX-6 DL1 TDX-4 DL1 TDX-5 DL1 TDX-6 TDX-1 memory TSX-1 memory