4 Final Report - Emits - ESA

4 Final
Report
board image processing. Column 7 gives the number of images requiring post-integration with LoS
motion compensation. For instance, channel VNIR1 requires an accumulation of 18 images (column 6)
with image motion compensation between 6 packets (column 7) of 3 simply accumulated images.
Channel UV1 requires post-integration with motion compensation of 30 successive images (same
value in columns 6 & 7).
1 2 3 4 5 6 7 8 9
Mission Channel
GSD at 52°N
(m)
MTF at
Nyquist
Final
SNR
Nb
of images
Post
Integration
Integ. Time
of image (s)
Channel acq.
time (s)
Marine UV1 80 0.156 1000 30 30 0.082 2.637
Marine UV2 80 0.162 1000 10 10 0.083 0.879
Marine VNIR1 80 0.146 1500 18 6 0.035 1.582
Marine VNIR2 80 0.161 1300 15 5 0.031 1.318
Marine VNIR3 80 0.154 943 6 3 0.050 0.527
Marine VNIR4 80 0.175 748 6 3 0.041 0.527
Marine VNIR5 80 0.171 557 2 2 0.085 0.176
Marine VNIR6 80 0.144 418 2 No 0.059 0.176
Marine VNIR8b 80 0.159 376 1 No 0.105 0.105
Marine VNIR9 80 0.140 339 1 No 0.118 0.118
Marine VNIR10 80 0.165 323 1 No 0.098 0.098
Marine VNIR11 80 0.216 478 2 No 0.019 0.176
Marine VNIR12 80 0.186 258 1 No 0.073 0.088
Marine VNIR13b 80 0.193 213 1 No 0.051 0.088
Marine VNIR14 80 0.137 213 1 No 0.108 0.108
Marine VNIR15 80 0.201 259 1 No 0.023 0.088
Marine VNIR16 80 0.164 250 1 No 0.055 0.088
Marine SWIR 300 0.271 250 1 No 4.19E-04 0.025
Marine MWIRb 300 0.095 378 1 No 0.017 0.025
Marine TIR1b 750 0.097 1818 1 No 5.64E-04 0.016
Marine TIR2b 750 0.102 2001 1 No 5.46E-04 0.016
Figure 4.3-3: Performances for Marine applications
4.3.2.3 Fire Monitoring
Fire monitoring is based on three IR channels, a MWIR channel with 300 m resolution to monitor the
fire area & location and two TIR channels with 750 m resolution to measure fire temperature.
Two VNIR channels with moderate SNR are also required, for which 40m resolution is possible without
post-integration if VNIR13a SNR requirement is relaxed from 213 (user requirement) to 150. This
value is assumed to simplify the image acquisition scheme.
1 2 3 4 5 6 7 8 9
Mission Channel
GSD at 52°N
(m)
MTF at
Nyquist
Final
SNR
Nb
of images
Post
Integration
Integ. Time
of image (s)
Channel acq.
time (s)
Fire VNIR8a 40 0.112 80 1 No 0.017 0.088
Fire VNIR13a 40 0.103 150 1 No 0.062 0.088
Fire MWIRa 300 0.095 233 1 No 2.62E-05 0.025
Fire TIR1a 750 0.097 670 1 No 4.72E-05 0.016
Fire TIR2a 750 0.102 736 1 No 5.05E-05 0.016
Figure 4.3-4: Performances for Fire Monitoring
Page 4-32 Doc. No: GOC-ASG-RP-002
Issue: 2
Astrium GmbH Date: 13.05.2009