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Antenna Elevation pattern
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SPH for auxiliary data with N=1 DSDs
Wave Mode Geolocation ADS
ASAR Wave Mode Products Base SPH
Slant Range to Ground Range conversion parameters
Measurement Data Set containing spectra. 1 MDSR per spectra.
Ocean Wave Spectra
Map Projection parameters
ASAR Image Products SPH
Measurement Data Set 1
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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
Level 2 Products
ASA_WVW_2P: ASAR Wave Mode Wave Spectra
ASAR Glossary Terms
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Land Glossary
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Geometry Glossary
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The Derivation of Backscattering Coefficients and RCSs in ASAR Products
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ASA_WVI_1P: ASAR Wave Mode SLC Imagette and Imagette Cross Spectra
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6.6.19 Wave Mode Geolocation ADS

Due to the reduced size of the imagettes compared to normal ASAR images, each Wave Mode Geolocation Annotation Data Set Record (ADSR) contains only the geodetic latitude and longitude of the centre point of the imagette. One ADSR is produced for each wave cell.

The centre point given in the Geolocation ADSR corresponds to the ground range centre point of the wave cell. This will not correspond exactly to the latitude and longitude of the centre sample of the SLC imagette (in slant range ), but provides a
more accurate positioning of the location of the cross spectra centre point.

Note that the imagettes do not cover a contiguous region geographically. Thus, Wave Mode Geolocation ADS entries may differ substantially for different imagettes.

Table 6.57 Wave Mode Geolocation ADS

Wave Mode Geolocation ADS

# Description Units Count Type Size
Data Record
0 zero_doppler_time
Zero Doppler Time of first line of the first line of the imagette
MJD 1 mjd 12 byte(s)
1 attach_flag
Attachment Flag

Set to 1 if unable to compute the cross spectra for a given SLC imagette (I.e. no Cross Spectra MDSR corresponding to this ADSR), set to 0 otherwise.

flag 1 BooleanFlag 1 byte(s)
2 center_lat
Geodetic latitude of center point (positive north)

This is the center point of the wave cell.

(1e-6) degrees 1 GeoCoordinate 4 byte(s)
3 center_long
Geodetic longitude of center point (positive east)

This is the center point of the wave cell.

(1e-6) degrees 1 GeoCoordinate 4 byte(s)
4 heading
Subsatellite Track Heading. Relative to North of centre point.
- 1 fl 4 byte(s)
Record Length : 25

DS_NAME : Wave Mode Geolocation ADS

Format Version 114.0  

Note for both fields # 3 and #4, the centre point of the wave cell is calculated after the cross spectra processing, and thus may differ from the centre sample latitude of the SLC imagette if slant range to ground range conversion was performed during the cross spectra calculation.