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esaENVISAT-1
Doc. No:PO-TN-ESA-GS-00701Issue :1 . 0Date : 18 December 1997Sheet : 1 / 21ENVISAT
1 ASAR
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
1.1 ASAR Product Summary Table
ASARProcessing
LevelImage
AlternatingPolarization Wide Swath
GlobalMonitoring
Wave
L 0 level0
stripe sizeCoverage
ASA_IM__0P
22500 Mbytes100Km/12000Km
(30’)
ASA_APC_0PASA_APH_0PASA_APV_0P
22500 Mbytes100Km/12000Km
(30’)
ASA_WS__0P
22500 Mbytes400Km/
12000Km(30’)
ASA_GM__0P
675Mb400Km/
40000Km(1 orbit)
ASA_WV__0P
608 Mb400*5Km*5Km
(1 orbit)
Browse Browsestripe sizeCoverage:
ASA_IM__BP3 Mbytes
100Km/4000Km
ASA_AP__BP3 Mbytes
100Km/4000Km
ASA_WS__BP3 Mbytes
400Km/4000Km
ASA_GM__BP18 Mbytes400Km/
40000Km
L 1b Med. Res.Imagesize sceneCoverage:
ASA_IMM_1P
4 Mbytes100Km/100Km
ASA_APM_1P
4 Mbytes100Km/100Km
ASA_WSM_1P
59 Mbytes400Km*400Km
L 1b Glob.Mon. Imagesize orbitCoverage
ASA_GM1_1P
146 Mb400Km/
40000Km
L 1b SLCsize sceneCoverage
ASA_IMS_1P741 Mbper scene100Km/100Km
ASA_APS_1P1481 Mb per scene
100Km/100Km
L 1b PRIsize sceneCoverage
ASA_IMP_1P134 Mb per scene100Km/100Km
ASA_APP_1P268 Mb per scene100Km/100Km
L 1b GECsize sceneCoverage
ASA_IMG_1P282 Mb
100Km/100Km
ASA_APG_1P563 Mb
100Km/100Km
L 1b Spectra& SLCImagettesizeCoverage
ASA_WVI_1P120 Mbytes(20 imagettes)5Km*5Km
L 1b ImageSpectrasize
ASA_ WVS_1P0.2 Mbytes(20 spectra)
L 2 Wavespectrasize
ASA_WVW_2P0.2 Mbytes(20 spectra)
esaENVISAT-1
Doc. No:PO-TN-ESA-GS-00701Issue :1 . 0Date : 18 December 1997Sheet : 2 / 21ENVISAT
g ong
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
1.2 ASAR Product Spreadsheets
ASAR Processing Level External CharacterisationModule Stepping
L 0 level0
sizeCoverage
ASA_EC__0P
6.25 MbytesIn trasponder Visibility (data transmission in 0.5 sec.)
ASA_MS__0P
1 Mbytesnot applicable
PRODUCT ID ASA_IM__0P
NAME ASAR Image Mode source packets level 0
DESCRIPTION ASAR Level 0 data of image modeThe objective of this product is to offer Level 0 data for possible images processinother processing site.It includes some mandatory information for SAR processin
COVERAGE Image mode,: 56 - 100 km across track depending on subswath.Along track coverage depends on the requested time interval (30 min max)
RESOLUTION N/A
ACCURACY N/A
SIZE Depends on the acquired segment : 22500 Mbytes max (30’ of data)
DATASET MPH + SPH + MDSMDS containing annotated ISP(1) sample = 4 bits I, 4 bits Q (compressed)
AUXILIARYDATA
Orbit data and time correlation parameters,PCD are included.
(Noise Measurements, Calibration Pulses P1,P1a,P2,P3Header content of Source Packet)
NOTES 1. Data uncompression is the first step to level1 processing
esaENVISAT-1
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PRODUCT ID ASA_APH__0P
g for
g on
wath.
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
ASA_APV__0P
ASA_APC__0P
NAME ASAR Alternating Polarisation Mode source packets level 0
DESCRIPTION ASAR Level 0 data of alternating polarization mode. Three sub-modes are existinthis mode:
• cross pol H (HH/HV= H transmit H and V received)• cross pol V(VV/VH= V transmit V and H received)• copol C (HH/VV= H and H received/V transmit and V
received)
The objective of this product is to offer Level 0 data for possible images processinother processing site.It includes mandatory information for SAR processing
COVERAGE Alternating Polarization mode: 56 - 100 km across track depending on subsAlong track coverage depends on the requested time interval.
RESOLUTION N/A
ACCURACY N/A
SIZE Depends on the acquired segment : 22500 Mbytes (30’ of data)
DATASET MPH + SPH + MDSMDS containing annotated ISP(1) sample = 4 bits I, 4 bits Q (compressed)
AUXILIARYDATA
Orbit data and time correlation parameters, PCD are included.
(Noise Measurements, Calibration Pulses P1,P1a,P2,P3Header content of Source Packet)
NOTES 1. Data uncompression is the first step to level 1 processing
esaENVISAT-1
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PRODUCT ID ASA_WS__0P
g on
quest-
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR Wide Swath Mode source packets level 0
DESCRIPTION ASAR Level 0 wide swath mode.
The objective of this product is to offer Level 0 data for possible images processinother processing site.It includes mandatory information for SAR processing
COVERAGE Wide swath mode: 406 km across track. Along track coverage depends on the reed time interval.
RESOLUTION N/A
ACCURACY N/A
SIZE Depends on the acquired segment : 22500 Mbytes (30’ of data)
DATASET MPH + SPH + MDSMDS containing annotated ISP(1) sample = 4 bits I, 4 bits Q (compressed)
AUXILIARYDATA
Orbit data and time correlation parameters, PCD are included.
(Noise Measurements, Calibration Pulses P1, P1a, P2, P3Header content of Source Packet)
NOTES 1. Data uncompression is the first step to level1 processing
esaENVISAT-1
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PRODUCT ID ASA_IMP_1P
llect-ion).is for
po-
ADS,DS,
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR image mode Precision Image
DESCRIPTION This is a multi-look, ground range, digital image. Generated from Level 0 data coed when the instrument is in image mode (7 possible swaths HH or VV polarisatThe product includes slant range to ground range correction as per definition. It users wishing to perform applications-oriented analysis. It is intended for multi-temral imaging and to derive backscattering coefficients.
COVERAGE 100 km along track x 56- 100 km across track
GEOMETRICRESOLUTION
approximately 30 m ground range (except IS1) X 30m azimuth
RADIOMETRICRESOLUTION
Product ENL > 3
PIXEL SPACING 12.5 m X 12.5 m
SIZE up to 134 Mbytes
DATASET each product containing the following:(1) header MPH + SPH(2) 8000 data records(3) 8350 samples/record (size for IS1 swath)(4) 2 bytes/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, SR/GR AGeolocation Grid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration:1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1. Product size in the range direction will vary function of imaging swath.2. Corrections: antenna elevation pattern, range spreading loss.
esaENVISAT-1
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PRODUCT ID ASA_IMS_1P
H orali-
ADS,tion
RF.
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR image single look complex
DESCRIPTION This is a single-look, complex, slant-range, digital image generated from Level 0ASAR data collected when the instrument is in image mode (7 possible swaths HVV polarisation). It is primarily intended for use in SAR quality assessment and cbration, and can be used to derive higher level products.
COVERAGE 100 km along track x 56- 100 km across track
GEOMETRICRESOLUTION
approximately 6 azimuth, programmed chirp bandwidth dependant slant range.
RADIOMETRICRESOLUTION
1 look in azimuth, 1 look in range
PIXEL SPACING natural spacing in both Slant range and Azimuth
SIZE 741 Mbytes
DATASET each product containing the following:(1) headers MPH + SPH(2) max 27 000 data records(TBC)(3) max 6850 samples/record (depending on imaging swath)(4) 4 bytes/sample (2bytes I/ 2bytes Q)
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, GeolocaGrid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1. Azimuth pixel spacing depends on Earth-Satellite relative velocity and actual P
2. Slant range pixel spacing is given by ASAR sampling frequency (19.208 Mhz)
esaENVISAT-1
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PRODUCT ID ASA_IMG_1P
agea map
ADS,DS,
pond-
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR image mode ellipsoid geocoded image
DESCRIPTION ASAR product generated from Level 0 data collected when the instrument is in immode. It is the geocoded version of the PRI product. The product is resampled to projection and its orientation is north up.
COVERAGE 100km X 100 km (corresponding to the input data)
RADIOMETRICRESOLUTION
Product ENL > 3
GEOMETRICRESOLUTION
approximately 30 m ground range (except IS1)X 30m azimuth
PIXEL SPACING 12.5 m X 12.5 m (grid easting and northing)
SIZE up to282 Mbytes
DATASET each product containing the following:(1) header MPH + SPH(2) max 11850 records(3) max 11850 samples/record(4) 2 bytes / sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, SR/GR AGeolocation Grid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration:1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1 Product size will vary function of imaging swath position.
2. The absolute calibration of the GEC product shall be the same as for the corresing non-geocoded PRI product.
esaENVISAT-1
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PRODUCT ID ASA_APP_1P
lter-
com-
ADS,DS,
km)
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR alternating polarization precision image
DESCRIPTION ASAR product generated from Level 0 data collected when the instrument is in anating polarization mode (7 possible swaths).
The product contains two images corresponding to one of the three polarisation bination sub-modes (HH & VV, HH & HV, VV & VH)
COVERAGE 100 km along track, 56- 100 km across track
GEOMETRICRESOLUTION
approximately 30 m ground range (except IS1)X 30m azimuth
RADIOMETRICRESOLUTION
Product ENL > 1.8
PIXEL SPACING 12.5 m X 12.5 m
SIZE up to 268 Mbytes
DATASET each product containing the following:(1) header MPH + SPH(2) 16,000 data records (8000 for VV polarisation & 8000 for HH polarisation)(3) 8350 samples/record (depending on imaging swath)(4) 2 bytes/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, SR/GR AGeolocation Grid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1. Product size in the range direction will vary function of imaging swath (56 to 100
2. The images from the two polarisation channels are coregistred.
3. Corrections: antenna elevation pattern, range spreading loss.
esaENVISAT-1
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PRODUCT ID ASA_APG_1P
lter-ct is
com-
ADS,DS,
pond-
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR Alternating Polarisation mode ellipsoid geocoded image
DESCRIPTION ASAR product generated from Level 0 data collected when the instrument is in anating polarisation mode. It is the geocoded version of ASAR.AP.PRI. The produresampled to a map projection and its orientation is north up.
The product contains two images corresponding to one of the three polarisation bination sub-modes (HH & VV, HH & HV, VV & VH)
COVERAGE 100km X 100 km
GEOMETRICRESOLUTION
approximately 30 m ground range (except IS1)X 30m azimuth
RADIOMETRICRESOLUTION
Product ENL > 1.8
PIXEL SPACING 12.5 m X 12.5 m (grid easting and northing)
SIZE up to 563 Mbytes
DATASET (1) each product containing the following(2) header MPH + SPH(3) max 23 700 records (11850 for VV polarisation & 11850 for HH polarisation)(4) max 11850 samples/record (depending on imaging swath)(5) 2 bytes / sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, SR/GR AGeolocation Grid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration:1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1. Product size will vary function of imaging swath position.
2. The absolute calibration of the GEC product shall be the same as for the corresing non-geocoded PRI product.
3. The images from the two polarisation combination channels are coregistred.
esaENVISAT-1
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PRODUCT ID ASA_APS_1P
col-s). It berod-
com-
ADS,tion
RF.
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR Alternating Polarisation mode complex image
DESCRIPTION This is a complex, slant-range, digital image generated from Level 0 ASAR datalected when the instrument is in Alternating Polarisation mode. (7 possible swathis primarily intended for use in SAR quality assessment and calibration, and canused to derive higher level products. If allowed by the instrument acquisition, this puct shall be suitable for interferometric applications.
The product contains two images corresponding to one of the three polarisation bination sub-modes (HH & VV, HH & HV, VV & VH)
COVERAGE 100 km along track, 56- 100 km across track
GEOMETRICRESOLUTION
approximately TBD azimuth, TBD slant range.
RADIOMETRICRESOLUTION
1 look in azimuth, 1 look in range
PIXEL SPACING natural spacing in both Slant range and Azimuth
SIZE max 1480 Mbytes
DATASET each product containing the following(1) headers MPH + SPH and respectively for each polarisation(2) max 27 000 data records(3) 6850 samples/record (depending on imaging swath)(4) 4 bytes/sample (2bytes I / 2bytes Q)
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, GeolocaGrid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1. Product size will vary function of imaging swath, satellite velocity and actual P
2. The images from the two polarisation channels are coregistered.
esaENVISAT-1
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PRODUCT ID ASA_WSM_1P
ideefini-
ADS,DS,
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR wide swath standard image
DESCRIPTION ASAR product generated from Level 0 data collected when the instrument is in wswath mode. The product includes slant range to ground range corrections per dtion.The product covers a continuous area along the imaging swath.
COVERAGE 400 km X 400 km(approximately) for a scene
400 km x 4000 km max for a stripe
GEOMETRICRESOLUTION
approximately 150 m X 150 m
RADIOMETRICRESOLUTION
Product ENL > 11.5
PIXEL SPACING 75 m X 75 m
SIZE 59 Mbytes for a scene
584 Mbytes for a stripe
DATASET each product scene containing the following:(1) header MPH + SPH(2) 5400 data records(3) 5450 samples/record(4) 2 bytes/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, SR/GR AGeolocation Grid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES
esaENVISAT-1
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PRODUCT ID ASA_IMM_1P
agee
ADS,DS,
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR image mode medium resolution image
DESCRIPTION ASAR product generated from Level 0 data collected when the instrument is in immode. This product has lower resolution but higher radiometric resolution than thASA_IMP The product covers a continuous area along the imaging swath
COVERAGE 100 km in along track direction for a scene
up to 4000km for a stripe, 56-100 km in across track direction
GEOMETRICRESOLUTION
approximately 150 m X 150 m
RADIOMETRICRESOLUTION
Product ENL ~ 40
PIXEL SPACING 75 m X 75m
SIZE 4 Mbytes of data for a scene
152 Mbytes for a stripe
DATASET each product scene containing the following:(1) header MPH + SPH(2) 1400 data records(3) 1400samples/record(4) 2bytes/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, SR/GR AGeolocation Grid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1. The products cover a continuous area along the imaging swath.
esaENVISAT-1
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PRODUCT ID ASA_APM_1P
lter- radi-
ation
ADS,DS,
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR Alternating Polarization medium resolution image
DESCRIPTION ASAR product generated from Level 0 data collected when the instrument is in anating polarization mode. The product has lower geometric resolution but higherometric resolution than ASA_APP
The product contains one or two images corresponding to one of the three polariscombination sub-modes (HH & VV, HH & HV, VV & VH)
COVERAGE 100 km in along track direction for a scene/
up to 4000km for a stripe, 56-100 km in across track direction
GEOMETRICRESOLUTION
approximately 150 m X 150 m
RADIOMETRICRESOLUTION
Product ENL ~ 50
PIXEL SPACING 75m X 75m
SIZE 4 Mbytes for a scene with one polarisationcombination
DATASET each product containing for each polarisation:(1) header MPH + SPH(2) 1400 data records(3) 1400 samples/record(4) 2bytes/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, SR/GR AGeolocation Grid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration1. Data I/Q correction2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1. The products cover a continuous area along the imaging swath.
2 The images from the two polarisation channels are coregistred.
esaENVISAT-1
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PRODUCT ID ASA_WV__0P
ages
g on
data
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR wave mode Low rate level 0
DESCRIPTION ASAR Level 0 source packet of wave mode.
The objective of this product is to offer Level 0 Source Packet data for possible improcessing on other processing site.It includes mandatory information for SARprocessing.
COVERAGE up to 100% of the orbit(from 6.04km x 5 km imagette in IS7 to 9.44km x 5km Imagette in IS1 dependinswath selection) every 100Km
RESOLUTION N/A
ACCURACY N/ A
SIZE max 608 Mbytes/orbit
DATASET MPH + SPH + ISPsample = 2 bits I, bits 2 Q (compressed using the FBAQ))
AUXILIARYDATA
Orbit data and time correlation parameters are included.
PCD
(Noise Measurements, Calibration Pulses P1,P1a,P2,P3Header content of Source Packet)
NOTES (1) product size derived from IS7 (reference PO-LI-MMS-SR-0002 Instrument list) =1.52 Mbyte (TBC)
up to 400 imagettes/products
esaENVISAT-1
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PRODUCT ID ASA_WVI_1P
ave
rod-
art of
es I/ 2
ADS,
RF.
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NOTE: The product called ASAR_WVW_2P is the level 2 product of ASAR wave modederived using the cross spectra methodology.
NAME ASAR Wave Mode SLC imagette and Imagette Cross Spectra
DESCRIPTION ASAR product generated from Level 0 data collected when the instrument is in wmode. The product is the basic level 1B product of ASAR wave mode.
The information is retained in complex form to allow derivation of Cross spectra. Puct containing up to 20 imagettes and associated imagettes cross spectra.
COVERAGE one product per 20 imagettes with imagette of 5 kmx5km (min.) every 100 km
GEOMETRICRESOLUTION
natural spacing slant range and azimuth azimuth
wavelength range from 20 to 1000m in 24 logarithmic steps
direction 0-360 degrees in 10 degree steps (only half real part and imaginary pspectra in product)
RADIOMETRICRESOLUTION
1 look in azimuth, 1 look in range for the SLC imagette
PIXEL SPACING natural pixel spacing in range and azimuth note 1-2
SIZE max 120 Mbytes (20 imagettes and spectra)
DATASET MPH + SPH+ Data Set Record A20 Polar Spectrum (18 bins in direction x 24 bins in wavelengthx2bytes per bin)+ Data Set Record B1 imagette max 1350 data records x 1100 samples/record x 4bytes/sample(2 bytbytes Q)
AUXILARYDATA
Orbit state vector . Time correlation parameters. Wave Processing parametersWave Geolocation ADS, SQ ADS
NOTES 1 Azimuth pixel spacing depends on Earth-Satellite relative velocity and actual P
2 Slant range pixel spacing is given by ASAR sampling frequency (19.208 Mhz)
esaENVISAT-1
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PRODUCT ID ASA_WVS_1P
cte us-
art of
ytes
ADS,
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR Wave Mode Imagette Cross Spectra
DESCRIPTION ASAR Cross Spectra extracted from the combined SLC and Cross Specta produASA_WVI_1P generated from data collected when the instrument is in wave moding the Cross Spectra methodology.
The Product is for Meteo users.
COVERAGE up to 20 spectra acquired every 100 km,
product coverage 5kmx5km minimum
GEOMETRICRESOLUTION
wavelength range from 20 to 1000m in 24 logarithmic steps
direction 0-360 degrees in 10 degree steps (only half real part and imaginary pspectra in product)
PIXEL SPACING N/A
SIZE max 0.2 Mbytes
DATASET MPH + SPH20 Polar Spectrum (18 bins in direction (10deg. steps)x24 bins in wavelengthx2bper bin)
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Wave Processing parametersWave Geolocation ADS, SQ ADS
esaENVISAT-1
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PRODUCT ID ASAR_GM__0P
stru-
g on
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR Global Monitoring Mode low rate Source Packet level 0
DESCRIPTION ASAR Level 0 product annotated Instrument Source Packet collected while the inment is in Global Monitoring Mode.
The objective of this product is to offer Level 0 data for possible images processinother processing site.It includes mandatory information for SAR processing.
COVERAGE up to 100% of the orbit= 40 000 km x 400 km swath
RESOLUTION N/A
ACCURACY N/ A
SIZE max 675 Mbytes /orbit
DATASET MPH + SPH + MDSMDS containing annotated ISP(1) sample = 4 bits I, 4 bits Q (compressed)
AUXILIARYDATA
Orbit data and time correlation parameters
PCDs
(Noise Measurements, Calibration Pulses P1,P1a,P2,P3Header content of Source Packet)
NOTES
esaENVISAT-1
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PRODUCT ID ASA_GM1_1P
lobal
ADS,DS,
n im-
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR Global Monitoring Mode Image
DESCRIPTION ASAR product generated from Level 0 data collected when the instrument is in gmonitoring mode. The product includes slant range to ground range correction.
COVERAGE up to 40000 km(1 orbit) X 400 km(approximately)
GEOMETRICRESOLUTION
1 km x 1 km
RADIOMETRICRESOLUTION
Product ENL ~ 7-9
PIXEL SPACING 500m x 500m
SIZE up to 146 Mbytes /orbit
extracted scene 2Mbytes
DATASET each product containing the following:(1) header MPH + SPH(2) (up to 80000) data records,(3) 850 samples/record (TBC)(4) 2 bytes/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. Main Processing parametersDoppler Centroid ADS, Chirp ADS, Antenna Elevation Pattern ADS, SR/GR AGeolocation Grid ADS, SQ ADS
INTERNAL CALIBRATION
For the purpose of calibration1. Data I/Q correction (bias removal on both I and Q channels, I/Q channels gaibalance correction, I/Q non orthogonality correction)2. Replica construction3. Calibration pulse processing4. Elevation gain function calculation5. Noise power estimation
NOTES 1. Stripline Processing one product covers a full orbit
esaENVISAT-1
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PRODUCT ID ASA_GM__BP
al
for
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR Global monitoring mode browse
DESCRIPTION ASAR product generated from the ASA_GM1_1P when the instrument is in GlobMonitoring mode. The product is for browse purpose only.
COVERAGE 405 km in across track direction
product stripe up to 40000 km for GM
PIXEL SPACING 1000 m x 1000m for GM
RADIOMETRICRESOLUTION
Product ENL ~ 11 -15
SIZE Stripline max 18 Mbytes
DATASET each containing:(1) header(2) 40000 data records(3) 410 samples/record(4) 1 byte/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. SQADS. Geolocation Grid ADS
NOTES The products cover a continuous area along the imaging swath.
PRODUCT ID ASA_IM__BP
NAME ASAR image mode browse
DESCRIPTION ASAR product generated when the instrument is in image mode. The product is browse purpose only.The product is generated from ASA_IMM product.
COVERAGE product stripe up to 4000 km
56-100 km in across track direction
RADIOMETRICRESOLUTION
Product ENL ~ 80
PIXEL SPACING 225 m x 225m (multiple of ASA_IMM pixel spacing)
SIZE stripline max 3Mbytes
DATASET each scene containing:(1) header(2) 8889data records(3) 480 samples/record(4) 1 byte/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. SQADS. Geolocation Grid ADS
NOTES The products cover a continuous area along the imaging swath.
esaENVISAT-1
Doc. No:PO-TN-ESA-GS-00701Issue :1 . 0Date : 18 December 1997Sheet : 20 / 21ENVISAT
PRODUCT ID ASA_AP__BP
.
ible
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR alternating polarization browse
DESCRIPTION ASAR product generated when the instrument is in alternating polarisation modeThe product is for browse purpose only.The product is generated from ASA_APM product. It contains one of the two posspolarisation combination generated in AP mode
COVERAGE product stripe up to 4000 km
56-100 km in across track direction
RADIOMETRICRESOLUTION
Product ENL ~ 75
PIXEL SPACING 225 m x 225 m (multiple of ASA_APM pixel spacing)
SIZE stripline max 3 Mbytes
DATASET each scene containing:(1) header(2) 8889data records(3) 480 samples/record(4) 1 byte/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. SQADS. Geolocation Grid ADS
NOTES The products cover a continuous area along the imaging swath.
esaENVISAT-1
Doc. No:PO-TN-ESA-GS-00701Issue :1 . 0Date : 18 December 1997Sheet : 21 / 21ENVISAT
PRODUCT ID ASA_WS__BP
ct is
ENVISAT-1 PRODUCT SUMMARY OVERVIEW
NAME ASAR wide swath browse
DESCRIPTION ASAR product generated when the instrument is in wide swath mode. The produfor browse purpose only.
COVERAGE product stripe up to 4000 km
405 km in across track direction
RADIOMETRICRESOLUTION
Product ENL ~ 30 to 48 (TBC)
PIXEL SPACING 900 m x 900m for WS
SIZE stripline max 3Mbytes
DATASET each product containing:(1) header(2) 4445 data records(3) 500 samples/record(4) 1 byte/sample
AUXILIARYDATA
Orbit state vector . Time correlation parameters. SQADS. Geolocation Grid ADS
NOTES (1) The products cover a continuous area along the imaging swath.