May 01, 2000 a method has been investigated for the measurement of topography using airborne fully polarimetric synthetic aperture radar sar data. This geodetic method uses two or more synthetic aperture radar sar images to generate maps of surface deformation or digital elevation, using differences in the phase of the waves returning to the satellite or aircraft. The xband system also has an interferometric function by which topographic mapping of the ground surface is achieved. Seamless synthetic aperture radar archive api search and download data from multiple archives the seamless synthetic aperture radar sar archive ssara application programming interface api enables users to search and download. Rapid flood and damage mapping using synthetic aperture. Pdf the use of polarimetric and interferometric sar data. Quadpol data, containing the full polarimetric backscattering i. A fully polarimetric, dualfrequency x and kubands sar was developed during the winter 20102011 for investigating the scattering characteristics of ice and snow. In all of these research efforts, the ocean surface wave spectra are retrieved from sar and polarimetric sar polsar by using an image intensitybased algorithm. Automatic extraction of linear topographic objects, such as, roads, rivers, or power lines, is an important topic for topographic mapping. Utilizing this measure of the azimuthal slopes and estimated terrain elevations, a onedimensional terrain slope map over a wide area may be produced.
Single pass polarimetric sar interferometry abstract. Terrain elevation maps can then be generated by integrating these slopes. Terrain topographic inversion from singlepass polarimetric. As the starting point, a complete survey of the statistical models for polsar data is conducted. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The use of polarimetric and interferometric sar data in. Slum mapping in polarimetric sar data using spatial. Sar polarimetry makes use of the polarization dependent scattering response of each pixel within. Tutorial on sar polarimetry esa earth observation data.
The sar data available are l and cband data acquired in both may. The processing of both singlepass, and orthogonal twopass, datasets is investigated. The integration of optical, topographic, and radar data for wetland mapping in northern minnesota jennifer corcoran, joseph knight, brian brisco, shannon kaya, andrew cull, kevin murnaghan forest resources. Geologic mapping in greenland with polarimetric sar. Some individual polarimetric features were found to provide negative effect.
Mapping using polarimetric radar imaging gim international. The tutorial material is made available in pdf format and is also bundled with the software itself. The data are single look complex products, fully polarimetric including hh, hv, vh and vv polarizations with fine resolution at 4. The work was commissioned to metasensing by the european space agency esa, in support of the candidate earth explorer mission coreh2o cold regions hydrology highresolution. This paper, using the mueller matrix solution, newly derives the. Sar polarimetry is useful for characterizing scattering mechanisms while sar interferometry yields high resolution topographic maps. Sar synthetic aperture radar interferometry has enabled two important science applications. P and lband sar data was acquired using the experimental sar esar during 14 and 15 october 2008. Introduction to polarimetric sar naiara pinto caltech jet propulsion laboratory. The authors used a lot of polarimetric sar data and optical time series data and made a lot of investigations. The data were acquired in support of a project to detect topographic change and relict geomorphic features on barrier islands for nasas topography and surface change program. The integration of optical, topographic, and radar data for. The experiments assessed a large number of image features for varying spatial neighborhoods and explored the power of random forests and a.
Topographic variations caused by the range and the azimuth terrain slopes induce polarization orientation changes which cause the polarization to rotate about the line of sight. Dual polarimetric sar data were exploited for impervious surfaces mapping. Jan 21, 2016 topographic variations caused by the range and the azimuth terrain slopes induce polarization orientation changes which cause the polarization to rotate about the line of sight. Polarimetric airborne synthetic aperture radar airsar data that was used are fully polarized c band, l band and p band data. Determining the points of change in time series of. For this reason most inversion studies are best done in area of. Tropical forest mapping using multiband polarimetric and. The use of polarimetric and interferometric sar data in floodplain mapping. Several data collection campaigns were conducted to support. Polarimetric decomposition of sar data for forest structure assessment shriniwas agashe shriniwas agashe, 20 department of earth and space sciences chalmers university of technology se412 96 goteborg sweden telephone. Surface water extent was mapped through a robust stepwise automatic thresholding sat approach and validated with a manual digitized surface water inventory.
Terrain topographic inversion using singlepass polarimetric. Polarimetric synthetic aperture radar sar application for geological mapping and resource exploration in the canadian arctic byunghun choe the university of western ontario supervisor osinski, gordon r. Two polinsar data sets with 6 flight passes each were acquired for each frequency band. Cv990 polarimetric lband sar data, special igarss issue of ieee transactions on geoscience and remote sensing, vol. Citeseerx u environmental mapping using envisat asar. The potential of the combined use of multiband polarimetric and interferometric airborne sar for tropical forest mapping are discussed using the nasajpl airsar data from the pacrim2 2000 campaign in indonesia. The question then is if we could use either polarimetric interferometry data, or the lower frequency polarimetric data, to estimate the topography of the underlying ground surface. First, a few basic concepts of the polarimetric sar are introduced, especially the notation employed in this paper. Her research focuses on using earth observing satellites, particularly microwave sensors, for characterizing and monitoring wetland ecosystems and seasonal freezethaw dynamics in the northern high latitudes as related to the global carbon and water. Assessment of polarimetric and spatial features for builtup mapping using alos palsar polarimetric sar data shucheng you, china key words.
Using these slope values, the poisson equation was then solved to create a digital elevation model dem of the terrain topography. Data contained as a topographic map were used to create a digital elevation model dem that was used for the geometric correction of the sar data. The polarimetric technique of measuring azimuth direction terrain slopes utilizes a polarimetric synthetic aperture radar sar to provide a direct measure of terrain azimuthal slopes and a derived estimate of terrain elevation. The university of western ontario cosupervisor neish, catherine d. A method has been investigated for the measurement of topography using airborne fully polarimetric synthetic aperture radar sar data. Up to now, many investigations have been made in soil moisture extraction and tree height estimation. A robust analytic model connecting polsar data and products e. When working with multilook fully polarimetric synthetic aperture radar sar data an appropriate way of representing the backscattered signal consists of the socalled covariance matrix. Random forest classifcation of wetland communities using. Terrain slopes in both the range and azimuthal directions have been estimated using multipass flight geometries. The results described in this paper are a first step towards the use of polarimetric xband sar data for slum extent mapping. Using these slope values, the poisson equation was then solved to create a digital elevation model dem. A new remote sensing technique using polarimetric synthetic aperture radar sar data has been developed which can measure terrain slopes in the azimuthal, or alongtrack, direction. Both fully polarimetric sar data in c, l, and p bands and fixedbaseline interferometric sar topsar data were acquired by the nasajpl airsar system in april 1995.
Radar data can be used in a map composition, just like any other dataset. Evaluation of digital classification of polarimetric sar data. Automatic surface water mapping using polarimetric sar data. Us5552787a measurement of topography using polarimetric. Classification of agricultural crops is possible using sar data, and polarimetric andor multitemporal acquisitions ensure a high accuracy skriver et al. Analysis of real polsar data are performed using different statistical methods to evaluate the models. Terrain classification based on spatial multiattribute graph. These 3 different wavelengths show their characteristic identity when dealing with forest areas. As the advanced form of sar, the polarimetric sar polsar can provide more useful information to describe the physical properties of ground object, so. Terrain topography measurement using multipass polarimetric.
Landslide mapping in vegetated areas using change detection. Remote topographic sensing using polarimetric sar data. Polarimetric sar processing and analysis prepare sirc data the data used in this tutorial are a subset of lband single look complex slc sirc data that cover the northern part. Landcover mapping using multitemporal, dualfrequency. Urban land use and land cover classification using remotely. Parameter estimation is another important topic in polarimetric sar applications. Introduction 70kb part i tutorial on radar polarimetry.
They investigate the potential of polarimetric sar interferometry using results from the evaluation of fully polarimetric interferometric shuttle imaging radar sircx sar data. This study analyses combinations of geomorphometric and remote sensing data from landsat, radarsat2 ultrafine and quadpolarimetric sar, and airborne lidar imagery. During the past ten years, the nasajpl airsar system has produced polarimetric and interferometric sar data. Alos palsar, support vector machine, random forest, builtup mapping summary fully polarimetric synthetic aperture radar polsar has the advantage for working at all time and. Terrain classification is one of the critical tasks for interpretation of remote sensing data. A polarimetric model of topographic effects on pband forest.
Interferometric synthetic aperture radar, abbreviated insar or deprecated ifsar, is a radar technique used in geodesy and remote sensing. For an area of 10 km azimuth by 3 km ground range, polarimetric interferometric sar polinsar data was acquired for both frequency bands. The dem grid was prepared using the topo to raster tool from arcgis 10. Polarimetric synthetic aperture radar sar application. Assessment of polarimetric and spatial features for built up.
A synthetic aperture radar sar is an active sensor transmitting pulses of polarized electromagnetic waves and receiving the backscattered radiation. In this course, you will learn how lasers are used in topographic mapping to produce elevation models, 3d scenes, and other gis products. Terrain correction of polarimetric sar data and its application in mapping mountain glacier facies with radarsat2 sar bangsen tiana, zhen lia, yanan zhua,b a center for earth observation and digital earth chinese academy of sciences, no. It is a dual frequency radar operating at lband and xband frequencies with polarimetric functions. Vegetation correction in topographic mapping using polarimetric radar interferometry, proceedings of 3rd european conference on synthetic aperture radar, eusar 2000, pp. Multitemporal emisar data set the sar data used in the study have been acquired by the fully polarimetric danish airborne sar system, emisar, which operates at two frequencies, c band 5. Use of airborne polarimetric sar, optical and elevation. Sar sensors at different wavelengths and with different polarimetric capabilities are being used in remote sensing of the earth. It is then utilized to generate the digital elevation mapping dem and terrain topography using twopass fully polarimetric sar or interferometric sar insar image data. Mapping urban impervious surface with dualpolarimetric. Apr 30, 2003 it is then utilized to generate the digital elevation mapping dem and terrain topography using twopass fully polarimetric sar or interferometric sar insar image data.
Multitemporal radarsat2 polarimetric sar data for urban land. The application of synthetic aperture radar sar for geologic mapping in greenland is investigated by the danish center for remote sensing dcrs in cooperation with the danish lithosphere centre dlc. During the past decade, two seemingly independent imaging sciences have advanced to maturity i wideband sar polarimetry uwbpol sar, as discussed in part i ofthese spie 3 120 conference proceedings, and ii topographic interferometric sar topinsar, which has become of considerable interest in digital elevation mapping dem. Download citation terrain topographic inversion using singlepass polarimetric sar image data it has been studied that the shift of polarization orientation angle psi at the maximum of co. Gaussian distributions, texture models, and finite mixture models. Overview of polarimetric interferometry request pdf. T r ppk is the real aperture radar rar modulation transfer function, including tilt modulation t t ppk, hydrodynamic modulation t h k, polarization orientation angle modulation. In 1994 a pilot projectt was conducted in east greenland. The development of the lband and the xband parts was carried out by jaxa and nict, respectively.
Introduction biomass, recently selected for esas seventh earth explorer mission, will for the. Pdf landcover mapping using multitemporal, dualfrequency. The remainder of this paper is organized as follows. Forest mapping and monitoring with interferometric synthetic. It is highlighted by a black dot on the baseline plot and by the blue radio button in the baseline table raw, grd, l1, l1. This thesis is dedicated to the study of texture analysis and physical interpretation of polsar data. The course begins with the fundamentals of lidar sensor design to understand how a precise, dense, and accurately georeferenced point cloud can be captured. Quad polarimetric airborne s and xband sar data was used to map salt marsh habitats. The sat method was also compared with other commonly used approaches for surface water mapping using ndwi and otsus method 34. The university of western ontario cosupervisor tornabene, livio l. Topographic mapping using polarimetric sar data nasaads. Polarimetric synthetic aperture radar data and the complex.
Represents the maximum baseline viable for interferometry. Nevertheless, most studies about urban mapping using sar or polsar data are limited in identifying the urban extent or mapping very few urban classes. Estimation of surface topography from single polarimetric. All the models are classified into three categories. Basic sar processing and analysis image map output output from envi image processing usually consists of a map oriented, scaled image map for presentation or visual analysis and interpretation. Synthetic aperture radar sar with the capabilities of alltime and allweather observing, has been widely used in remote sensing area, such as resource exploration, topographic mapping, military reconnaissance and target recognition. The difficulty in detailed urban mapping using sar data is mainly due to the complexity of the urban environment. Terrain classification based on spatial multiattribute graph using polarimetric sar data. Recently, a new method, originally used in topographic measurements schuler et al. Polarimetric sar data correction and terrain topography. Erika podest is a scientist with the carbon cycle and ecosystems group at nasas jet propulsion laboratory. The default master granule is the interferable granule corresponding to the granule you have selected to analyze. Automatic surface water mapping using polarimetric sar.
Usage of polarimetric sar data was superior over single polarization data. In this research and development project, envisat polarimetric sar data. The danish center for remote sensing dcrs is, in collaboration with the danish mapping agency, conducting a study on topographic mapping using sar data, and land cover mapping results are presented. Texture analysis and physical interpretation of polarimetric. Sar interferometry is sensitive to the location of the imaged area and the scattering geometry. Increasing demands for lasting and environmentally conscious use of our natural resources together with a cost effective and restrictive use of fertilizers and pesticides require the employment of new technologies in agriculture. Polarimetric decomposition of sar data for forest structure. The recent launches of three fully polarimetric synthetic aperture radar polsar satellites have shown that polarimetric radar imaging can provide abundant data on the earths environment, such as biomass and forest height estimation, snow cover mapping, glacier monitoring, and damage assessment. This invention pertains generally to topographic mapping and more specifically to the measurement of topography over a wide area utilizing a polarimetric synthetic aperture radar sar installed in an aircraft or satellite. Terrain topographic inversion using singlepass polarimetric sar image data article in science in china series f information sciences 474. During the aftermath of typhoon hagibis, we made flood and damage proxy maps, rapidly derived from synthetic aperture radar sar data using change detection approaches. Measurement of topography using polarimetric synthetic. In case of roads, an automatic extraction from synthetic aperture radar sar imagery is rather difficult, due to the speckle effect and the limited spatial.
The processing of both single pass, and orthogonal twopass, datasets is investigated. A multiscale image segmentation is performed to capture the habitat variability within the study area resulting in. This data set was acquired over the llanrhidian salt marsh in wales on 25 july 2010 with the astrium airborne demonstrator. The integration of optical, topographic, and radar data. Firstly, the insar preprocessing methods, such as subpixel accuracy coregistration, baseline estimation, flatten phase removal, effective wave number and incidence angel images. Because of only 2 polarisations of asar, with a coherent response of different vegetation types and the high variance of pixel values, the results from classification approaches using monotemporal images are. Master and paired slave granules from the sar archives at asf and university navstar consortium unavcowestern north america insar winsar. The danish airbome sar, emisartt, acquired fully polarimetric cband data which. Sixdate radarsat2 finebeam polarimetric sar data were acquired over the study area during summer 2008.
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