Automated terrain corrected SAR geocoding

نویسنده

  • Urs Wegmiiller
چکیده

A technique for automated terrain corrected SAR geocoding is presented. Instead of operator selected control points the presented method uses cross-correlation with a SAR intensity image simulated from the Digital Elevation Model to refine the geocoding transformation.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Geocoding of Terrasar-x Data

TerraSAR-X is a new German radar satellite that shall be launched in April 2006. The expected lifetime is 5 years. It carries a high frequency X-band SAR sensor that can be operated in different modes and polarisation. The Spotlight-, Stripmapand ScanSARmodes provide high resolution SAR images for detailed analysis as well as wide swath data whenever a larger coverage is required. Imaging will ...

متن کامل

Terrain Slope Correction and Precise Registration of SAR Data for Forest Mapping and Monitoring

SAR data acquired over hilly terrain show geometric and radiometric distortions due to the sidelooking configuration of the radar sensors. These effects usually lead to a distortion of the useful backscatter information related to land cover or bio-geophysical parameters. Post-processing approaches to remove such distortions are very important to broaden the application possibilities of radar r...

متن کامل

Improved Airborne SAR Data Processing by Blockwise Focusing, Mosaicking and Geocoding

Standard focusing of SAR data assumes a straight recording track of the sensor platform. Small non-linearities of airborne platform are corrected for during a motion compensation step while keeping the assumption of a stripmap geometry. In the case of high resolution and high frequency SAR systems, the navigation data may not be accurate enough to perform such a motion compensation; SAR systems...

متن کامل

Fine-geocoding of SAR using robust map-to-image registration

Geocoding of SAR images based merely on navigation data (IMU and GPS) and on a SAR sensor model are sometimes not precise enough due to e. g. missing or incomplete GPS measurements. In case of still consistent SAR imaging geometry the correction of the navigation based preregistration by an image based approach is then the solution. In this paper, the application of a map-to-image registration ...

متن کامل

Geometric and Radiometric Correction of Esa Sar Products

Accurate geolocation of SAR imagery enables not only precise overlays with other data sources in a common map geometry, but also normalisation for the systematic influence of terrain on image radiometry. We begin by describing our verifications of the geometric behaviour of ENVISAT ASAR products, including all image mode (IM), alternating polarisation (AP), and wide swath (WS) types: IMS, IMP, ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1999