ASAR Validation Review Introduction

1. ASAR Validation Review Introduction • ASAR C.P. Objectives • Challenges in ASAR Cal/Val • Strategy • History of the C.P. main activities • Organisation of the Review B. Rosich ESA-ESRIN

2. Ensure operational stability and instrument performance in ALL modes Verification of in-flight antenna performance Verification of the internal calibration/instrument gain monitoring External Characterisation of the ASAR Antenna Verify the quality requirements for ALL products and tune the processor / instrument settings if necessary Perform the absolute product calibration: Antenna Pattern determination for all 32 beams and Absolute gain calibration for all beams and modes Demonstrate in-flight ASAR multi-mode interferometry and AP capabilities Validate the new wave mode products Establish the activities to be performed during routine phase Commissioning Phase Objectives

3. Stability of active phased array 32 transmit/receive beams 5 different operation modes (IM,AP, WS, GM, WV) for science data plus 2 calibration modes (EC, MS) 7 beams (IS1-IS7) for single swath modes: Image, Wave and Alternating Polarization Mode 5 sub-swaths (SS1, IS3-IS6) ScanSAR: Wide Swath and Global Monitoring Mode Complex internal calibration system Challenges in ASAR Instrument Calibration

4. ASA_IM__0P ASA_AP__0P ASA_WS__0P ASA_GM__0P ASA_WV__0P L0 ASA_IMS_1P ASA_APS_1P ASA_WVI/S_1P SLC ASA_IMP_1P ASA_APP_1P PRI ASA_IMG_1P ASA_AGP_1P GEC ASA_IMM_1P ASA_APM_1P ASA_WSM_1P MR ASA_GM1_1P LR ASA_IM__BP ASA_AP__BP ASA_WS__BP ASA_GM__BP BR L2 ASA_WVW_2P Challenges in ASAR Product Calibration IM AP WS GM WV

5. Processing Algorithms Specan Range Doppler IM AP WS GM WV ASA_IM__0P ASA_AP__0P ASA_WS__0P ASA_GM__0P ASA_WV__0P L0 ASA_IMS_1P ASA_APS_1P ASA_WVI/S_1P SLC ASA_IMP_1P ASA_APP_1P PRI ASA_IMG_1P ASA_AGP_1P GEC ASA_IMM_1P ASA_APM_1P ASA_WSM_1P MR ASA_GM1_1P LR ASA_IM__BP ASA_AP__BP ASA_WS__BP ASA_GM__BP ASA_WVW_2P BR L2

6. Establish continuous monitoring of the antenna using special calibration modes. Adjustment of Instrument settings / gains Perform basic processor verification and product calibration. Use of calibration sites at different world locations. Kiruna GS Neustrelitz GS ASAR Tr. Garmisch Radarsat Tr. Bern/Zurich Las Vegas Vietnam Rain Forest Brazil Strategy • Set-up an efficient team to cover all the aspects of the ASAR cal/val • Peform systematic monitoring of key instrument and product quality parameters • Refine/Optimize the Processor and Product quality • First priority on IM, WV and WS in VV polarization. Continuation with HH polarization, AP and GM modes.

7. Product Calibration schedule ECR EVR IM AP WS GM WV ASA_IM__0P ASA_AP__0P ASA_WS__0P ASA_GM__0P ASA_WV__0P L0 ASA_IMS_1P ASA_APS_1P ASA_WVI/S_1P SLC ASA_IMP_1P ASA_APP_1P PRI ASA_IMG_1P ASA_AGP_1P GEC ASA_IMM_1P ASA_APM_1P ASA_WSM_1P MR ASA_GM1_1P LR ASA_WVW_2P ASA_IM__BP ASA_AP__BP ASA_WS__BP ASA_GM__BP L2 BR

8. HH el. antenna patterns • IM/AP Chirp BW increase • WV patch • WSM timeline • change • Azimuth • patterns • EC factors • for V&H • 1st image • Check up of all • modes • First synthesized • patterns • ScanSAR beam • coef. update • WS Chirp BW increase • Patch Large echo shift (I) • VV el. antenna Patterns • Patch Large echo shift (II) • First ASAR interferogram • GM patch • PF-ASAR 3.03 • Wave level 2 • implemented • PF_ASAR 2.14.02 JUL. NOV. APR. MAY JUNE AUG. SEP. L EVR ECR DEC. OCT. MAR.. • WV mode gain adj. • 1st K0 issue • PF-ASAR 2.14.00 • Preliminary miss-pointing results • IM/AP gain adj. • Patch small echo • shift • 2nd K0 issue • PF-ASAR 3.01 • First IM/WS • interferogram • AP SWST change patch • PF-ASAR 3.02 • VH and HV el. antenna • patterns History of the C.P. Main Activities

9. Instrument Status update Processor Verification update Product Verification and Quality for IM, WS, AP, GM Wave Product Validation After the Commissioning Phase. Summary & Conclusions. Organisation of the ASAR Validation Review