1. GISMO Team Meeting May 3, 2006 Vexcel Corporation

2. Agenda May 3 draft agenda at Vexcel 0900 Project Status, Jezek 0915 Radar system status (Gogineni) 0945 Antenna Status and potential design modification (KU ) 1000 Break 1015 Simulations work at Vexcel (Wu) 1045 Summary of recent P-3 project and P-3 status (Wallops telecon) 1100 KU and JPL system and data integration (JPL/KU telecon) 1130 Data formats for May 06 (Paden/Wu/JPL telecon) 1200 Lunch 1300 Experiment summary for May 06 - Gogineni 1330 Confirm specifications for May 06 flight - Jezek 1400 Surface Based ice sounding SAR update (Paden) 1430 IPY Proposal for 07 08 flights Jezek 1445 Refined science objectives for 07 and 08 flights (Discussion) 1515 Break 1530 Backscatter modeling status (reports from OSU and KU) 1545 updated milestone chart and discussion 1630 Adjourn

3. GISMO Project Status K. Jezek

4. Project Accomplishments Theoretical concept well defined Phase history simulations confirm theoretical predictions Radar design trade completed Scaling scaling study completed Radar system available for May 06 test flight in Greenland

5. Project Accomplishments 1 paper in press JGR Planets 1 paper in prep, TGARS 2 two written papers submitted to EUSAR, third paper to be presented

6. Year 1 Project Goals Science and Management (OSU): Convene Science Team; conduct initial design review; refine project plan compile information on ice dielectric properties and ice sheet physical properties such as surface roughness and slope. Prepare reports as required by NASA Radar Development (University of Kansas: a) Design of new set of optimized antennas: We will build a model structure and measure its electrical performance. We will identify and work with a contractor to build the antenna installation mounted under the wings and flight test it in collaboration with engineers at NASA Wallops. b) End-to- end simulation of the system including antennas. Algorithm Development: Develop a motion compensation processor and a time-domain (back-propagation) IFSAR processor. Use legacy code from the GeoSAR and MOSS IIP projects. (JPL): b) Prototype first version of the interferogram filtering code (JPL); c) Modify simulation software and generate simulated IFSAR returns from basal and surface layers (Vexcel) and evaluate the filter performance on the simulated data.

7. Milestone Chart as of 1/2006

9. Year 2 Project Goals Radar Development : Build sub-system and assemble the complete system. Perform laboratory tests using delay lines to document loop sensitivity,radar waveforms and impulse response. System Integration (KU, WFF, Aircraft Operator) a)Install the radar and navigational equipment on P-3 or similar aircraft and conduct flight tests over the ocean. Algorithm Development. Develop a strip IFSAR processor and compare against the results of the exact time-domain processor. Iterate the clutter removal algorithm based on experimental results (JPL). Develop software and apply software to process multiple 2-D complex SAR images coherently (Vexcel). Data acquistion and Analysis : Field experiments over the ice sheet; Finalize interferometric SAR processor and pre-processor and process data from first campaign (JPL). Extract basal topography from result.. Iterate interferometric filter design based on assessment of the results. Science and Management : Participate in field measurements; Conduct design and performance review; assess quality of results in context of science requirements.

10. Some issues Annual reports Two-frequency operations (antennas) Band pass filter design Motion compensation Data formatting Airborne simulations (aircraft attitude study of tomography vs interferometry) Uncertainty of P-3 availability Backscatter sensitivity study Time domain processor In flight processor Project ends June 2008 – impact on 2008 test flight

11. May 2006 Experiment Parameters K. Jezek

12. May 06 Experiment Twin otter flight from Thule: Camp Century; interior 150 MHz Radar 5 transmit and 5 receive elements (1 m spacing) ~ 2 m baseline outbound Return flight offset 25 m to the south for larger baseline Maximum comfortable altitude Range window setting procedure????

13. May 06 flight route

14. GISMO Flights 07-08 IPY Proposal Submitted to ROSES K. Jezek

15. IPY Flight Request CampaignAircraftBase LocationTotal Experime nt Flight Hours Individual Flight Duration Elevation (ft) Equipment May 2007NASA P-3Kangerlussuaq/Thule Greenland 505-7 hours~26,000150 MHz 450 MHz U. Kansas Radar May 2008NASA P-3Kangerlussuaq/Thule Greenland 505-7 hours~26,000150 MHz 450 MHz U. Kansas Radar

16. IPY 07 and 08 Flights May 07 flights – May 06 opportunity offset requirement for earlier tests – Teaming with WFF is advantageous Offset some of the costs (transit) Relieves some of the personnel burden Increases Science Payoff May 08 Flights – Lessons learned opporunity and more science

17. IPY Proposed Costs Transit Cost $42,000 (14 hours) Science Mission Cost $150,000 (50 hours) MPCs (Fuel surcharge, travel, fabrication, other MPCs) $89,794 Total cost per year $281,794 One time fabrication costs $50,000 Total funds available in IIP Project $100,000 TOTAL ESTIMATED COST FOR THIS PROPOSAL $513,588 One time fabrication costs are for modifications to the existing antenna pods. Mod is to allow operation at both 150 and 450 MHz. Available monies should permit reduced May 07 campaign independent of this propsoal

18. IPY Science Objectives 2007 YearValidation ObjectiveIPY Science Objectives 2007Verify fringe rate separation concept at 150/450 MHz Acquire bed topography and reflectivity data along line connecting Camp Century GISP/GRIP, NGRIP and proposed NEME deep borehole sites 2007Compare signal strength at 150/450 MHz Investigate distribution of subglacial water across and along North East Ice Stream 2007Verify clutter rejection concept over smooth and rough target areas 2007Investigate tomography with close repeat tracks 2007Investigate repeat pass (several day) InSAR

19. IPY Objectives 2008 2008Verify modifications from 2007 ‘lessons learned’ Bed topography and reflectivity along and across Jacobshavn Glacier to investigate controls on fast glacier flow 2008Investigate one-year repeat pass interferometry by reflying a 2007 flight line Bed topography and reflectivity along a line from DYE-3 to GRIP/GISP deep borehole sites 2008OSU cluster sites overflight