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ASAR Data Formats Products
Geolocation Grid ADSRs
Doppler Centroid parameters
Chirp parameters
Antenna Elevation pattern
ASAR external characterization data
ASAR external calibration data
Level 0 SPH
Level 0 MDSR
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
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
Level 2 Products
ASA_WVW_2P: ASAR Wave Mode Wave Spectra
ASAR Glossary Terms
Sea Ice Glossary
Land Glossary
Oceans Glossary
Geometry Glossary
ASAR Instrument Glossary
Acronyms and Abbreviations
ASAR Frequently Asked Questions
The ASAR Instrument
Instrument Characteristics and Performance
Inflight Performance Verification
Preflight Characteristics and Expected Performance
Instrument Description
Internal Data Flow
ASAR Instrument Functionality
Payload Description and Position on the Platform
ASAR Products and Algorithms
Auxiliary Products
Common Auxiliary Data Sets
Auxiliary Data Sets for Level 1B Processing
Summary of Auxiliary Data Sets
Instrument-specific Topics
Level 2 Product and Algorithms
Level 2 Product
ASAR Level 2 Algorithms
Level 1B Products
ASAR Level 0 Products
Level 0 Instrument Source Packet Description
Product Evolution History
Definitions and Conventions
Organisation of Products
ASAR Data Handling Cookbook
Hints and Algorithms for Higher Level Processing
Hints and Algorithms for Data Use
ASAR Characterisation and Calibration
The Derivation of Backscattering Coefficients and RCSs in ASAR Products
External Characterisation
Internal Calibration
Pre-flight Characterisation Measurements
ASAR Latency Throughput and Data Volume
Data Volume
Products and Algorithms Introduction
Child Products
The ASAR User Guide
Image Gallery
Further Reading
How to Use ASAR Data
Software Tools
How to Choose ASAR Data
Special Features of ASAR
Geophysical Coverage
Principles of Measurement
Scientific Background
Geophysical Measurements
ASAR Product Handbook
ASAR instrument characterization data
Wave Mode processing parameters
ASAR processor configuration data
Main Processing parameters
ASA_WVI_1P: ASAR Wave Mode SLC Imagette and Imagette Cross Spectra
Product Terms
RADAR and SAR Glossary
Level 1B Products
Summary of Applications vs Products
Site Map
Frequently asked questions
Terms of use
Contact us


5.7 Land Glossary

Table 5.7
Burn Delineation After a forest area is affected by a fire, the affected area dries out and leaves and small twigs fall off the trees resulting in a contrast in moisture levels and structure between the burn area and surrounding forest. Radar is sensitive to differences in these parameters resulting in a contrast in backscatter.
Clear Cuts in Forests The relatively smooth surface of clear cuts produce little backscatter compared to the rougher canopy of uncut forest. These differences in backscatter allow forest clear cuts to be potentially delineated from uncut forest.
Co-seismic Co-seismic events are those which occur at the same time as an earthquake, usually in a matter of seconds of the initial event.
Crop Damage Assessment Damage to crops alters the geometric structure of plants and canopy surface roughness. Damaged areas have different geometric structure/roughness than surrounding areas, therefore producing contrasting backscatter.
Crop Type Determination
Different crops have unique roughness and moisture levels. Radar is sensitive to differences in these parameters resulting in contrasting backscatter.
Crustal Displacement. Also known as crustal deformation, crustal displacement is induced by the movement of the Earth's tectonic plates. This activity can produce a variety of landforms at the surface of the Earth, depending on the duration of the process involved in their formation.
Flood Extent Mapping The smooth surface of water bodies acts as a specular reflector which results in a low backscatter return. This contrasts with the rougher surface of the land which is a diffuse scatterer and produces relatively high amounts of backscatter.
Forest Cover Type Discrimination
In some cases different forest types have unique geometric structures, canopy surface roughness and moisture levels. Radar is sensitive to these parameters which potentially results in contrasting backscatter. Different forest types can often be inferred from terrain analysis.
Geological Structure Mapping
Geological structures often have characteristic forms which, if located near the Earth's surface, may be manifested topographically as the side-looking configuration of radar highlights relief.
Landform Delineation
Landforms often have characteristic shapes which may be manifested as topographic relief. The ability to image landforms is a result of the side-looking configuration of radar, which highlights relief.
Landslide Hazard Assessment Landslide hazard areas are defined when the locations of past landslides are identified. Landslides change the landscape through the transportation of vegetation and soil, thus affected areas have different canopy and soil roughness than surrounding unaffected areas. Radar is sensitive to these variances in roughness, and produces contrasting backscatter between affected and unaffected areas
Subsidence Subsidence is the sinking of the Earth's surface in response to geological or man-induced causes.( see also "subsidence" in the section entitled "Land Applications" )
Soil Moisture Assessment Variations in soil moisture produce changes in dielectric properties of soil. This contrast results in increasing backscatter with increasing soil moisture.
Temporal Change Evaluation
Canopy roughness and moisture content vary over the growing season. Radar is sensitive to these differences in contrasting backscatter during the growing season. This allows for the evaluation of change in backscatter over several dates and evaluation of temporal change in crop parameters.
Terrain Analysis Terrain may manifested as topographic relief. The ability to image topographic relief is a result of the side-looking configuration of radar which highlights topographic differences.
Tillage Practice Determination Different tillage practices produce unique soil surface roughness. Radar is sensitive to differences in surface roughness resulting in contrasting backscatter.
Topography The technique of graphically representing the exact physical features of a place or region on a map.