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PrecisionScan

Array developed the PrecisionScan processor to produce Synthetic Aperture Radar (SAR) images of the highest quality from RADARSAT and ERS-1 signal data.

PrecisionScan complements FastScan, which is a real-time, reduced-resolution RADARSAT processor. PrecisionScan provides high precision, full resolution processing and performs various types of SAR processing and SAR image quality analysis.

Survey Processing

Survey processing produces reduced-resolution images of a full square scene at moderate speed. This function displays processed images from all single-beam (RADARSAT and ERS-1) and ScanSAR (RADARSAT) raw data products.

Precision/ScanSAR Processing

PrecisionScan's main function is processing SAR images. A phase-preserving algorithm is used for all RADARSAT single-beam and ERS-1 signal data. Precision processing can either be requested by specifying start and stop range lines from the raw product, or in conjunction with Survey processing, using selected subsets of Survey images.

Copyright CSA/ASC, 1997
Image received by: CCRS/CCT on January 7, 1996 at 22:49:44 GMT
Processed by: Array Systems Computing Inc.'s PrecisionScan Image Quality Analysis

ScanSAR processing uses the Spectral Analysis (SPECAN) algorithm to produce full resolution images for RADARSAT ScanSAR data. PrecisionScan uses a range of image analysis functions to assess the quality of images produced, including:

• Point Target Analysis
• Distributed Target Analysis
• ScanSAR Analysis
• Azimuth Ambiguity Ratio Analysis
• Swath Characterization
• Elevation Pattern Determination

These tools are based on the RADARSAT Calibration Workstation Array developed for the Canadian Space Agency (CSA).

More Analysis Capabilities

PrecisionScan also offers the following analysis capabilities:

• Signal Quality Analysis: PrecisionScan can compute data quality measurements on raw signal data.
• Hardcopy Generation: The user can request printouts of any displayed images or data.
• Format Conversions: The user can convert products from one format to another.
• Report Generation: PrecisionScan produces reports on signal data quality, image data quality, and a report describing the processing it performed.