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    24-Jul-2014
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Measurement Data Set containing spectra. 1 MDSR per spectra.
Ocean Wave Spectra
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ASAR Image Products SPH
Measurement Data Set 1
Auxilliary Products
ASA_XCH_AX: ASAR External characterization data
ASA_XCA_AX: ASAR External calibration data
ASA_INS_AX: ASAR Instrument characterization
ASA_CON_AX: ASAR Processor Configuration
Browse Products
ASA_WS__BP: ASAR Wide Swath Browse Image
ASA_IM__BP: ASAR Image Mode Browse Image
ASA_GM__BP: ASAR Global Monitoring Mode Browse Image
ASA_AP__BP: ASAR Alternating Polarization Browse Image
Level 0 Products
ASA_WV__0P: ASAR Wave Mode Level 0
ASA_WS__0P: ASAR Wide Swath Mode Level 0
ASA_MS__0P: ASAR Level 0 Module Stepping Mode
ASA_IM__0P: ASAR Image Mode Level 0
ASA_GM__0P: ASAR Global Monitoring Mode Level 0
ASA_EC__0P: ASAR Level 0 External Characterization
ASA_APV_0P: ASAR Alternating Polarization Level 0 (Cross polar V)
ASA_APH_0P: ASAR Alternating Polarization Level 0 (Cross polar H)
ASA_APC_0P: ASAR Alternating Polarization Level 0 (Copolar)
Level 1 Products
ASA_IMS_1P: ASAR Image Mode Single Look Complex
ASA_IMP_1P: ASAR Image Mode Precision Image
ASA_IMM_1P: ASAR Image Mode Medium Resolution Image
ASA_IMG_1P: ASAR Image Mode Ellipsoid Geocoded Image
ASA_GM1_1P: ASAR Global Monitoring Mode Image
ASA_APS_1P: ASAR Alternating Polarization Mode Single Look Complex
ASA_APP_1P: ASAR Alternating Polarization Mode Precision Image
ASA_APM_1P: ASAR Alternating Polarization Medium Resolution Image product
ASA_WSS_1P: Wide Swath Mode SLC Image
ASA_WVS_1P: ASAR Wave Mode Imagette Cross Spectra
ASA_WSM_1P: ASAR Wide Swath Medium Resolution Image
ASA_APG_1P: ASAR Alternating Polarization Ellipsoid Geocoded Image
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ASA_WVW_2P: ASAR Wave Mode Wave Spectra
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2.10.3 Data Volume

2.10.3.1 Product Sizes for Disk Storage

Approximate values of the worst case input, intermediate, and output product sizes for each of the ASAR products is shown below in table 2.74 and table 2.75 below. The table is taken from the processing system specification, and users will be most interested in the Output Data Set Size column. The need for intermediate product storage arises during the processing of geocoded products

Table 2.74 ASAR approximate image data disk requirements
Product Identifier
Input Data Set Size(MB)
Intermediate Data Set Size(MB)
Output Data Set Size(MB)
Total(MB)
IMP
250
-
128
378
IMS
250
-
690
940
IMG
250
350
280
880
IMM and IMB
250
-
4
254
APP
250
-
256
506
APS
250
-
1380
1630
APG
250
980
560
1790
APM and APB
250
-
8
258
WSM and WSB
800
-
60
860
WVI
740 /orbit
-
2070 / orbit
2810 / orbit
GMI & GMB
675 / orbit
-
140 / orbit
815 / orbit

The table assumes about 20 sec of raw data is required to process both scene and stripline products with 100 km coverage. 65 sec of data is assumed to be needed for products with 400 km coverage.

Wave mode processing for an entire orbit has the largest disk space requirements. The calculation of the data set sizes for each imagette in Wave Mode are detailed below.

Table 2.75 Data sizes for wave mode imagette
Ka
PRF(max)
Azimuth matched filter length La
Number of samples per range line (max) Nr
Range matched filter length (min) Lr
Number echoes per imagette (max) Na
Input data set size(MB)Nr* Na/ 2
Output data set size(MB)(Nr-Lr)*(Na-La)*4
IS1
1969
1677
1143
1164
287
2392
1.33
4.18
IS2
1929
1645
1122
1223
292
2376
1.38
4.45
IS3
1859
2095
1889
1079
226
3080
1.58
3.88
IS4
1789
1680
1262
1305
286
2520
1.56
4.89
IS5
1727
2082
2008
1161
231
3160
1.74
4.09
IS6
1671
1698
1380
1352
283
2648
1.71
5.17
IS7
1619
2070
2117
1215
232
3192
1.85
4.03