Radar Data Processing, Quality Analysis and Level-1b Product Generation for AGRISAR and EAGLE campaigns
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1 Radar Data Processing, Quality Analysis and Level-1b Product Generation for AGRISAR and EAGLE campaigns German Aerospace Center (DLR) R. Scheiber, M. Keller, J. Fischer, R. Horn, I. Hajnsek
2 Outline E-SAR data processing approach AGRISAR campaign DEM processing data summary & qual. check synthetic quad-pol generation time series examples EAGLE campaign data summary & qual. check image analysis Sentinel-1 simulation Conclusions AGRISAR & EAGLE Campaigns Final Workshop > Slide 2
3 E-SAR Processing Raw data on tape Transcription and survey processing Raw data on disk Tiepoint positions Processing RGI data: Aircraft position and attitude RGI data - SLC_sr, ML_sr, ML_gr data - images and additional information 400MB 1.3GB / product DEM Processing GTC data: Tiepoint positions - geocoded data - geotiff images - images and additional information MB / product GTC data DIMS data archive at DLR-DFD RGI: Radar Geometry Image GTC: Geocoded Terrain Corrected DIMS: Data Information and Management System EOWEB: Earth Observation on the WEB EOWEB User Interface Agrisar User AGRISAR & EAGLE Campaigns Final Workshop > Slide 3
4 AGRISAR & EAGLE Campaigns Final Workshop > Slide 4
5 E-SAR Processing Parameters(*) Resolution SLC image Multilook image slant range azimuth No. of looks slant range azimuth X-band 2m 0.89m (0.59m) 8 (16) 2m 4m (5m) C-band 2m 0.89m (1.2m) 8 (4) 2m 4m (3m) L-band 2m 1.0m (1.2m) Posting 8 (4) 2m x 2m 2m 4.5m (3m) UTM zone 33 (31) * for campaigns AGRSAR (EAGLE) AGRISAR & EAGLE Campaigns Final Workshop > Slide 5
6 AGRISAR campaign AGRISAR & EAGLE Campaigns Final Workshop > Slide 6
7 AgriSAR Time Frame flight direction: 271 Along Stripe (E-W): M02: 19. April 06 Δt M04: 01. May days M05: 11. May days M06: 16. May days M07: 24. May days M09: 07. June days M10: 13. June days M11: 21. June days M12: 05. July days M14: 12. July days M15: 26. July days M16: 02. Aug days Intensive campaigns flight direction: 204 Across Stripe (NNE-SSW): M03: 20. April 06 Δt M08: 06. June days M13: 06. July days AGRISAR & EAGLE Campaigns Final Workshop > Slide 7
8 Görmin DEM Mission 01: 18. April stripes along, 1 stripe across Complete DEM: 10 km x 14 km Across stripe acquired with high squint (>10 ) and strong track variations (+/- 10m) Corner reflectors for processing: CR1: 1,50 m, looking north 1.9 m height error CR2: 1,50 m, looking north -0.9 m height error CR3: 1,50 m, looking northwest 0.6 m height error CR4: 1,50 m, looking northwest 0.8 m height error Corner reflectors for control: CR5: 0,90 m, looking south 3.3 m height error CR6: 0,90 m, looking north 3.4 m height error AGRISAR & EAGLE Campaigns Final Workshop > Slide 8
9 Processed AGRISAR data AGRISAR & EAGLE Campaigns Final Workshop > Slide 9
10 Radiometric Signature of Corner Reflectors 0509_NR : theoretical value : 2dB range + : near range corner reflector * : far range corner reflectors 0912_NR 0509_FR 1309_NR 1109_NR+FR : ΔRCS > 2dB : Squint > 2 : high backgr. wrong estimation 0912_NR 0509_FR 1309_NR+FR 0308_FR 1109_NR+FR AGRISAR & EAGLE Campaigns Final Workshop > Slide 10
11 Geocoded Data: Mission 09, 07 June agrsar0902x1_t01, Xvv 06agrsar0904x1_t01, Xhh 06agrsar0909x1_t01, Cvh/vv 06agrsar0910x1_t01, Chv/hh 06agrsar0912x1_t01, Lpol Subsets in Xvv, Cvh/vv, and Lpol AGRISAR & EAGLE Campaigns Final Workshop > Slide 11
12 Synthetic Quad-Pol C-band RGI Product VV-VH RGI Product HH-HV Repeat pass interferometric processing Including residual motion error estimation using HV and VH channels Interferometric phase correction due to the residual baseline Track fusion and Parameter correction Geocoding Synthetic RGI Product HH-HV-VV-VH Synthetic GTC Product HH-HV-VV-VH valid for: wind insensitive areas vegetation up to 2m measure of confidence: HV-VH coherence AGRISAR & EAGLE Campaigns Final Workshop > Slide 12
13 Temporal Change Δt = 0 days M02, Lpol M02, Cpol M02, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 13
14 Temporal Change Δt = 12 days M04, Lpol M04, Cpol M04, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 14
15 Temporal Change Δt = 22 days M05, Lpol M05, Cpol M05, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 15
16 Temporal Change Δt = 27 days M06, Lpol M06, Cpol M06, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 16
17 Temporal Change Δt = 35 days M07, Lpol M07, Cpol M07, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 17
18 Temporal Change Δt = 49 days M09, Lpol M09, Cpol M09, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 18
19 Temporal Change Δt = 55 days M10, Lpol M10, Cpol M10, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 19
20 Temporal Change Δt = 63 days M11, Lpol M11, Cpol M11, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 20
21 Temporal Change Δt = 77 days M12, Lpol M12, Cpol M12, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 21
22 Temporal Change Δt = 84 days M14, Lpol M14, Cpol M14, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 22
23 Temporal Change Δt = 98 days M15, Lpol M15, Cpol Harvest! M15, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 23
24 Temporal Change Δt = 105 days M16, Lpol M16, Cpol Harvest! M16, Xvv AGRISAR & EAGLE Campaigns Final Workshop > Slide 24
25 EAGLE campaign Speulderbos Cabauw AGRISAR & EAGLE Campaigns Final Workshop > Slide 25
26 E-SAR - Data Summary for EAGLE campaign 1 / 1 X,C,L 2 / 2 X,C,L,L 1 / 2 For easier data handling test site Speulderbos had to be split into two segments. The overlap of 1 km secures no data loss in the overlapping region. AGRISAR & EAGLE Campaigns Final Workshop > Slide 26
27 E-SAR - DEM processing for EAGLE campaign CABAUW SPEULDERBOS (south) AGRISAR & EAGLE Campaigns Final Workshop > Slide 27
28 C-Band, synthetic quad-pol. Speulderbos AGRISAR & EAGLE Campaigns Final Workshop > Slide 28
29 L-Band, quad-pol. Cabauw AGRISAR & EAGLE Campaigns Final Workshop > Slide 29
![E-SAR - Data Quality Band Scene ID Res. Range [m] Res. Azimuth [m] Cal. Accuracy [db] resolution range resolution azimuth Nominal - 2.20 3.00 +/- 2.](/docs-images/79/79699874/images/30-1.jpg "0000 X-VV 0109 2.11 2.99 0.50 C-HH 0141 2.11 3.19-1.75 C-VV 0141 2.11 3.18-0.60 L-HH 0103 2.15 3.07-0.19 L-VV 0103 2.20 3.07 0.")
30 E-SAR - Data Quality Band Scene ID Res. Range [m] Res. Azimuth [m] Cal. Accuracy [db] resolution range resolution azimuth Nominal / X-VV C-HH C-VV L-HH L-VV General Remarks: X-Band: Reduced radiometric performance (antenna mainly designed for SAR interferometry) C-Band: Moving targets in two polarisations only (synthetic quad-pol from two passes) L-Band: Minor radio frequency interferences (RFI) on the river (filtering not done, led to worse image contrast) AGRISAR & EAGLE Campaigns Final Workshop > Slide 30
31 Effects of moving targets N ships N cars Synthetic quad-pol C-Band at Cabauw and Speulderbos: Yellow = pass1 (HH-HV polarized), Blue = pass2 (VV-VH) (R-G-B = HH-HV-VV = Pass1-Pass1-Pass2) AGRISAR & EAGLE Campaigns Final Workshop > Slide 31
32 Conclusions E-SAR data of AGRSAR and EAGLE campaigns processing without problems no loss of data very good quality (geometric and radiometric) Limited set of Sentinel-1 simulations has been performed for AgriSAR Primarily IWS mode; distributed via EOWEB One stripmap mode for comparison For Long wavelength project: ALOS simulation for same acquisition dates No Sentinel-1 simulation for EAGLE campaign data (to be performed after the workshop) AGRISAR & EAGLE Campaigns Final Workshop > Slide 32
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