Moving Target Detection with Along-Track SAR Interferometry. A Theoretical Analysis

Abstract

This technical report analyses, theoretically, the capability of ground moving target detection based on the SAR along-track interferometric phase. The probability density function of the interferometric phase is derived for the general case that moving target signals are superimposed upon the stationary clutter. This theoretical analysis is an extension of the known statistics for the clutter-only case. Several target models are proposed that depend on one hand on the spatial dimension of the moving target compared to the multilook resolution cell size, and on the other hand on the backscattering type, i.e., deterministic or random target signal. The derived density functions provide the means to quantify the performance limits (by determining the receiver operating characteristics) for any set of system and target parameters, such as false alarm rate, signal-to-clutter ratios (SCR) and target velocities. Hence, deeper insight is provided into results expected from upcoming SAR/GMTI systems such as the Radarsat2 Modex experiment or the enhanced airborne Aurora CP-140 SpotSAR system.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2002
Accession Number
ADA407708

Entities

People

  • Christoph H. Glerull

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Cell Size
  • Data Science
  • Detection
  • Detectors
  • False Alarms
  • Ground Moving Target Indicators
  • Information Science
  • National Security
  • Probability
  • Probability Density Functions
  • Random Variables
  • Security
  • Statistical Analysis
  • Statistics
  • Synthetic Aperture Radar
  • Target Detection
  • Warning Systems

Fields of Study

  • Engineering
  • Physics

Readers

  • Radar Systems Engineering.