Computationally Efficient Resampling of Nonuniform Oversampled SAR Data

Abstract

A computationally efficient technique is developed to resample SAR data oversampled in the slow-time domain for a platform accelerating along the track. The algorithm segments the data between uniformly spaced points on the synthetic aperture, then performs a weighted average on the demodulated SAR data in each segment to adjust the effective sample position on the aperture. The weighting is derived using a first-order Taylor series approximation and used parameters from the velocity and acceleration of the platform and the radar waveform.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 2010
Accession Number
ADA539089

Entities

People

  • Geoffrey H. Goldman

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Algorithms
  • Frequency
  • Ground Moving Target Indicators
  • Image Processing
  • Image Reconstruction
  • Nonuniform
  • Platforms
  • Radar
  • Radar Signals
  • Scattering
  • Simulations
  • Synthetic Aperture Radar
  • Time Domain
  • Unmanned Aerial Vehicles
  • Unmanned Vehicles
  • Waveforms

Readers

  • Calculus or Mathematical Analysis
  • Image Processing and Computer Vision.
  • Radar Systems Engineering.

Technology Areas

  • Space
  • Space - Space Objects